# Posts by tim

Total # Posts: 1,513

**math**

Each student in a class of 25 students wrote down a random digit. What is the predicted number of students who wrote a digit that is greater than 7? THANK YOU!!

**math**

Bella rolls 2 number cubes 60 times. How many times can she expect the sum of the numbers to be greater than 10? THANK YOU!

**statistics**

Two cards selected from standard deck of 52 cards. The first is replaced before second card selected. Find the probability of selecting a diamond and then a king

**Math**

Given: Triangle SVX is congruent to triangle UTX and Line SV is parallel to line TU. Prove: VUTS is a parallelogram. Statement : Reason. 1. Tri SVX is congruent to Tri UTX. Reason: Given. 2. Line SV is parallel to line TU. Reason: Given 3. Line SV is congruent to line TV. ...

**Math**

Given: Triangle SVX is congruent to triangle UTX and Line SV is parallel to line TU. Prove: VUTS is a parallelogram. Statement : Reason. 1. Tri SVX is congruent to Tri UTX. Reason: Given. 2. Line SV is parallel to line TU. Reason: Given 3. Line SV is congruent to line TV. ...

**math - probability**

Pierre asks Sherry a question involving the theoretical probability of a compound event in which you flip a coin and draw a marble from a bag of marbles. The bag of marbles contains 3 white marbles, 8 green marbles, and 9 black marbles. Sherry's answer, which is correct, ...

**math - probability**

Cecil solved a theoretical prediction problem and got this answer: "The spinner will land on the red section 4.5 times." Is it possible to have a prediction that is not a whole number? If so, give an example. THANK YOU!!

**physics**

(a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.561 m. What is the charge on each?

**College Physics**

A truck moving north at a speed of 70 km/h. The exhaust pipe on top sends out a trail of smoke that makes a 20 degree angle east of south. If the wind is blowing toward the east. What is the wind speed at that location?

**Math**

1. Based on the given information, what can you conclude, and why? Given: m angle P= m angle T ; PR=TR. A) Triangle QRP is congruent to Triangle TRS by SAS. B) Triangle QRP is congruent to Triangle SRT by SSS. C) Triangle QRP is congruent to Triangle SRT by ASA. D) Triangle ...

**Math**

1. Based on the given information, what can you conclude, and why? Given: m angle P= m angle T ; PR=TR. A) Triangle QRP is congruent to Triangle TRS by SAS. B) Triangle QRP is congruent to Triangle SRT by SSS. C) Triangle QRP is congruent to Triangle SRT by ASA. D) Triangle ...

**Math**

So the answer is D?

**Math**

1. If triangle ABC is congruent to DEF, m angle A =55, and m angle E =25. What is m angle C? A) 25 B) 55 C) 80 D) 100 Is the answer C?

**Math**

1. Write the following reversible as a biconditional: If two perpendicular lines intersect, they form four 90* angles. A) Two intersecting lines are perpendicular if and only if they form four 90* angles. B) Two intersecting, perpendicular lines do not form four angles. C) ...

**Math**

1. What is the value of x in this diagram? There's two lines crossing each other. One angle is 7x+7, and another one is 47, the next is 112. A) 17 B) 15 C) 105 D) 68 Is the answer B? I got B when I solved but I still would like someone to check, thank you!

**Math**

1. Complete two column proof. Given: x/6+2=15 Prove: x=78 x/6+2=15 A:______ x/6=13 B:______ x=78 C:_______ A:a. Given b. Subtraction Property of Equality c. Division Property of Equality B:a. Given b. Addition Property of Equality c. Multiplication Property of Equality C:a. ...

**Math**

Complete the 2 column proof. Given m<rst = 5x and m<uvw = 7x <rstand <uvw are supplementary. Prove x=15 m<rst=5x and m<uvw=7x <rst and <uvw are supplementary given m<rst + <uvw = 180 definition of supplementary angles 5x+7x = 180 ? 12x=180 ? x=15...

**Math**

1. Which of the following best describes the altitude of a triangle? A) A segment perpendicular to a side of the triangle. B) A segment that passes through the midpoint and is perpendicular to a side of a triangle. C) A segment drawn from the vertex to the midpoint of the ...

**Math**

1. Where is the incenter of any given triangle? A) the point of concurrency of the altitudes of the triangle. B) The point of concurrency of the medians of the triangle. C) The point of concurrency of the perpendicular bisectors of the triangle. D) The point of concurrency of ...

**Art**

Oh! I apologize! I thought the question said "WOULD hold up well outdoors".

**Math**

1. Find the value of X. In the inside of the triangle, there are 5 angles, angle A, Angle B, angle C, angle D, and Angle E. There is a midsegment with 3x on one side of the midsegment and 48 on the inside of segment CD. There are also two 30's on each side of the triangle...

**Math**

1. When would the following conditional be false? If you work 20 hours a week, then you make 125.00. A) You work 25 hours a week, and make 125.00. B) You work 25 hours a week, and you make 175.00. C) You work 20 hours a week, and you make 175.00. D) You work 20 hours a week, ...

**Math**

Also, thank you so much!

**Math**

Would the answer be C?

**Math**

1. The vertices of a triangle are P(2,-4), Q(-5,3), and R(-1,-2). What are the vertices of the image reflected across the y-axis? A) P(2,-4), Q(-5,3), R(-1,-2) B) P(2,4), Q(-5,-3), R(-1,2) C) P(-2,-4), Q(5,3), R(1,-2) D) P(-2,4), Q(5,-3), R(1,2) Could someone please help me ...

**Math**

1. If Angle ABC is congruent to Angle DEF by side-side-side triangle congruence, the angle B is congruent to Angle E by? A) Side-angle-side congruence. B) Angle-angle-side congruence. C) Corresponding parts of congruence. D) Corresponding parts of congruent triangles are ...

**math**

Use the AC method for factoring: (-4x+1)(-3x+5) Hope it helps!

**Math**

1. When would the following conditional be false? If you work 20 hours a week, then you make 125.00. A) You work 25 hours a week, and make 125.00. B) You work 25 hours a week, and you make 175.00. C) You work 20 hours a week, and you make 175.00. D) You work 20 hours a week, ...

**Math**

1. What is the hypothesis of the following conditional statement? If we walk home from school, it takes 30 minutes. A) We walk home from school. B) It takes 30 minutes. C) We do not walk home from school. D) We walk. Is the answer B? I'm sorry if I'm incorrect, I do ...

**Math**

Find the solution to the system of equations by substitution. 2x+5y=8 and 6x+y=10

**Math**

5. What is the contrapositive of the following conditional: "If a student plays basketball, then the student is over 6 feet tall." A- If a student is over 6 feet tall then the student plays basketball. B - IF a student is not over 6 feet tall, then the student does ...

**Math**

1. Find the length of a diagonal of a rectangle ABCD with vertices, A (-3,1), B(-1,3), C(3,-1) and D (1,-3). A) 5.7 B) 6.3 C) 3.2 D) 4.5 Hello! I don't understand how to solve this question since the unit I just read barely went over this. If anyone could help that would ...

**math**

Find the percent change from $20 to $25. --thank you!

**math**

A school snack bar sells a mix of granola and raisins. The mix includes 2 pounds of granola for every 3 pounds of raisins. How many pounds of granola are needed for a mix that includes 24 pounds of raisins? THANK YOU!

**Physics**

A tennis ball, starting from rest, rolls down a hill. At the end of the hill the ball becomes airborne, leaving at an angle of 35° with respect to the ground. Treat the ball as a thin walled spherical shell (I=2/3 mr^2 )and determine the range x it travels if it starts at ...

**math**

Each of two trapezoidal prisms has a volume of 120 cubic centimeters. The prisms have no dimensions in common. Give possible dimensions for each prism. THANK YOU!

**Math**

Tony's mom wants to pay her son 2.00 for his first hour of work, and then double his pay every hour after that. If tony works six hours how much would he make?

**math**

The wading pool shown is a trapezoidal prism with a height of a total volume of 286 cubic feet. What is the missing dimension? **The drawing shows the shallow height is 2ft. Length is 13ft. Width is 8ft. And a question mark for the height of the deeper end of pool. THANK YOU!!

**math**

Josie has 260 cubic centimeters of candle wax. She wants to make a hexagonal prism candle with a base area of 21 square centimeters and a height of 8 centimeters. She also wants to make a triangular prism candle with a height of 14 centimeters. Can the base area of the ...

**Maths**

the scale of a map is 1:20000. Find the length of a road in real life it is 6 cm long on the map

**Math**

Are you sure? That was my first guest originally, but it didn't seem to be equidistant from both points - (2,2) was the one that was equal distance.

**Math**

1. Find the midpoint AB. Point be is located at (6,6) and point A is located at (-3,-3). There's a straight line connecting them. A) (4.5, 4.5) B) (1.5, 1.5) C) (3,3) D) (2,2) Is the answer D?

**math**

An oatmeal box is shaped like a cylinder with 2 inch radius and 9 inch height. Use a net to find the surface area S of the oatmeal box to the nearest tenth. Then find the number of square feet of cardboard needed for 1,500 oatmeal boxes. Round your answer to the nearest whole ...

**math**

Henry has a box that has 24 cm length, 27 cm width, and 10 cm height. He wants to cover the box with paper without any overlap. A) How many square centimeters will be covered with paper? B) Suppose the length and width of the box double. Does the surface area S double? Explain...

**math**

An oatmeal box is shaped like a cylinder with 2 inch radius and 9 inch height. Use a net to find the surface area S of the oatmeal box to the nearest tenth. Then find the number of square feet of cardboard needed for 1,500 oatmeal boxes. Round your answer to the nearest whole ...

**math**

Enya is building a storage cupboard in the shape of a rectangular prism. The rectangular prism has a square base with side lengths of 2.5 feet and height of 3.5 feet. Compare the amount of paint she would use to paint all but the bottom surface of the prism to the amount she ...

**Science**

How much longer will it take for sound in air to travel 10km than in water

**math**

A composite figure is formed by combining a square and a triangle. Its total area is 32.5 feet squared. The area of the triangle is 7.5 ft squared. What is the length of each side of the square? Explain. THANK YOU!!

**Physics**

How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers?

**math**

How does the area of a circle change if the radius is multiplied by a factor of n, where n is a whole number? THANK YOU!

**math**

The bulls-eye on a target has a diameter of 3 inches. The whole target has a diameter of 15 inches. What part of the whole target is the bulls-eye? Explain. THANK YOU!!

**math**

The point (3,0) lies on a circle with the center at the origin. What is the area of the circle to the nearest hundredth? THANK YOU!

**science**

What do you mean?

**science**

Financially,Canada would have benefited from keystone xl pipeline. What would have meant for individual Canadians? I know I have repeated the question from before but I need help urgently, since it's due tomorrow.

**science**

Financially,Canada would have benefited from keystone xl pipeline. what would have meant for individual Canadians?

**math**

The sides of a square field are 12 meters. A sprinkler in the center of the field sprays a circular area with a diameter that corresponds to a side of the field. How much of the field is not reached by the sprinkler? Round your answer to the nearest hundredth. THANK YOU!

**government**

C the king privy council

**math**

You can use the formula A = C^2 / 4pi to find the area of a circle given the circumference. Describe another way to find the area of a circle when given the circumference. THX!

**math**

A radio station broadcasts a signal over an area with radius of 50 miles. The station can relay the signal and broadcast over an area with a radius of 75 miles. How much greater is the area of broadcast region when the signal is relayed? Round your answer to nearest square ...

**math**

A bakery offers a small circular cake with a diameter of 8 inches. It also offers a large circular cake with a diameter of 24 inches. Does the top of the large cake have three times the area of the small cake? If not, how much greater is its area? Explain.

**math**

A gear on a bicycle has the shape of a circle. One gear has a diameter of 4 inches, and a smaller one has a diameter of 2 inches. Justin says that the circumference of the larger gear is 2 inches more than the circumference of the smaller gear. Do you agree? Explain your ...

**math**

A circular path 2 feet wide has a an inner diameter of 150 feet. How much farther is it around the outer edge of the path than around the inner edge? THX!

**math**

Sam in placing rope lights around the edge of a circular patio with a diameter of 18 feet. The lights come in lengths of 54 inches. How many strands of lights does he need to surround the patio edge?

**math**

A museum groundskeeper is creating a semicircular statuary garden with a diameter of 30 feet. There will be a fence around the garden. The fencing costs $9.25 per linear foot. About how much will the fencing cost altogether? THANK YOU!

**Statistics**

Having trouble with these four questions: 1. Given the rules of the different games of chance described in the sheet you downloaded, think about your odds of winning in each of these three scenarios: A. Craps: Either roll or a 7 or 11 on the first roll, OR match the point ...

**math**

A map of a public park shows a circular pond. There is a bridge along a diameter of the pond that is 0.25 mi long. You walk across the bridge,while your friend walks halfway around the pond to meet you at the other side of the bridge. How much farther does your friend walk? ...

**Entrepreneurship**

Or is it B? I'm kinda confused here. Either ones could technically happen. the price could go down if no one was buying the product. BUT if people were buying the product due to how easily available it was, the price could go up.

**Entrepreneurship**

1. If a product becomes more easily available, what is likely to happen? A) The product will get more competitors. B) The cost of making the product will increase. C) The product will become a consumer good. D) The price will go down. Is the answer D? I'm not really sure, ...

**Entrepreneurship**

1. A company claims that its products are better quality than other similar products. What type of competition is this? A) Price B) Nonprice*** C) Supply D) Demand 2. Every tangible product is made up of what? A) Wealth B) Entrepreneurship C) Labor D) Land*** My answers are: 1...

**Physics**

A satellite has a mass of 6090 kg and is in a circular orbit 4.63 × 105 m above the surface of a planet. The period of the orbit is 2.4 hours. The radius of the planet is 4.86 × 106 m. What would be the true weight of the satellite if it were at rest on the planet...

**Chemistry**

I'm wondering, if Hydronium ions are formed , do we use Ka? And vice versa (OH- we use Kb?

**Chemistry**

Calculate the pH of a 0.18 M solution of cyanide ion, CN- given the Ka (HCN) = 6.2 x 10^-10. I know how to calculate Ka and Kb values no problem, but I don't know which value to use in my calculations. Is it based on the conjugate base/acid formed or hydronium or hydroxide...

**math**

A sphere has a radius of 12 inches. A horizontal plane passes through the center of the sphere. A)Describe the cross section formed by the plane and the sphere. B)Describe the cross sections formed as the plane intersects the interior of the sphere but moves away from the ...

**math**

A right rectangular prism is intersected by a horizontal plane and a vertical plane. The cross section formed by the horizontal plane and the prism is a rectangle with dimensions 8 inches and 12 inches. The cross section formed by the vertical plane and the prism is a ...

**geometry**

A scale for a scale drawing is 10 cm:1 mm. Which is larger, the actual object or the scale drawing? Show work. --I understand that the answer is 100 times larger since 10mm equals 1cm. BUT how do I show the work of how this is solved? THANK YOU!

**math**

A game room has a floor that is 120 feet by 75 feet. A scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet. What are the dimensions of the scale drawing? THANK YOU!

**Statistics**

A survey of physicians in 1979 found that some doctors give a placebo to patients who complain of pain for which the physician can find no cause. If the patients' pain improves, these doctors conclude that it had no physical basis. The medical researchers who conducted the...

**Social Studies**

1. d 2. a 3. c 4. b

**inequality**

For the problem below, the simple way to get answer would be 10*-12=-120. But how to write it as an Inequality Expression? ---A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the ...

**math**

A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the submarine's elevation is no greater than -12 feet per second. Can the submarine reach the entrance to the cave in less than 10 ...

**math**

I did see this answer, but how is this written as an inequality type of expression? Thank you!

**math**

A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the submarine's elevation is no greater than -12 feet per second. Can the submarine reach the entrance to the cave in less than 10 ...

**math**

Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 33 sit-ups. Write an equation that could be solved to find the number of days Jerry has been doing sit-ups, not...

**Math**

1. A ferris wheel is drawn on a coordinate plane so that the first car is located at the point (30,0). what are the coordinates of the first car after a rotation of 270* about the origin. A) (30,0) B) (-30,0) C) (0,-30) D) (0,30) This doesn't make any sense, can someone ...

**math**

Could someone please help us to write and solve an equation for this: A football team has a net yardage of -26 1/3 yards on a series of plays. The team needs a net yardage of 10 yards to get a first down. How many yards do they have to get on their next play to get a first ...

**Language arts**

1. Which of the following sentences uses the past perfect verb tense. A) By June, I will have owned the camera shop for a decade. B) After it was sold, I had owned the camera shop for 12 year as C) I cannot recall a time when I have not owned some kind of shop. D) I owned that...

**Physics I**

What is the torque produced by a force of 40N j applied at the point 2 m i - 5 m j + 3 m k?

**math**

Edward's school is 13/2 miles away from his home. He goes by car to school and back. The car consumed 4 gallons of gas taking him to and from school over 5 days. What distance did he travel per gallon of fuel? THANK YOU

**math**

Suppose an amount increases by 100%, then decreases by 100%. Find the final amount. Would the situation change if the original increase was 150%? Explain your reasoning. THANK YOU!

**math**

Leroi and Sylvia both put $100 in a savings account. Leroi decides he will put in an additional $10 each week. Sylvia decides to put in additional 10% of the amount in the account each week. 1)Who has more money after the first additional deposit? Explain. 2)Who has more money...

**physics**

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...

**science**

how sure are you? isn't transcription part of gene expression (b) ........ B would also make sense then.

**science**

Which of the following is the key factor driving cellular differentiation in the body? a. chemical gradients in the cellular environment b. expression of genetic coding c. rate of transcription d. cellular nutritional status B or C?

**science**

In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act as an enzyme c. ...

**Math**

Could someone please help? I can't find the definitions in my book anywhere. Thank you! 1. Given: <2 = <4, m<2 = 110 Proof: m<3 = 70 <2 = <4, m<2 = 110 Given m<2 = m<4 Definition of congruent angles m<4 = 110 b._______ <3 and <4 are a ...

**Math**

1. Write the converse of the following true conditional statement. if the converse is false, write a counterexample. If a < 10, then a < 15 a) if a > 10, the a > 15; false. Counterexample: a=12 and a<15. b) if a <15, then a<10; false. Counterexample: a=12 ...

**Math**

James have $6 in dimes and quarters if he has 4 fewer quarters then dimes then how many of each coins does he have

**Math**

School is 2 miles from home along a straight road. The table shows your distance from home as you walk home at a constant rate. Time(mins): 10-20-30 Distnce(mi)1.5-1-0.5 1)Is the relationship in the table proportional? 2)Find your distance from school fro each time in the ...

**Algebra**

Suppose a population of bacteria in a Petri dish has a doubling time of 6 hours. How long will it take for an initial population of 11000 bacteria to reach 20000? Round your answer to two decimal places.

**MATH HELP PLEASE**

Albert is saving up money for a down payment on a house. He currently has $4718, but knows he can get a loan at a lower interest rate if he can put down $5323. If he invests the $4718 in an account that earns 5% annually, compounded quarterly, how long will it take Albert to ...