# Posts by KAREEN

Total # Posts: 52

Math
Fred and Jane are brother and sister. Fred is 3years older than twice jane's age. The sum of their ages is less than 36. Taking jane's age To be x years form a inequation. What can you say about jane's age.

Math
A picture frame has a height of 10cm and width 8 cm. If you take 2 1/2 from the height from both sides and 2 cm from one side, what is the area? 24 cm sqrt

Math
A treasure box contained 3 bags of mint and 4 bags of chocolate. What is the probability of a student grabbing a bag of mint without looking? 3/7

Math
Six people used a spa for 20-40 min. for an average of 48 minutes.How many would be able to use it for 50 minutes if one person used it for 50 min is the answer 8

Math I am lost!
Tom travelled to the train station at 60 mph and arrived 1 minute earlier. He then travelled back home at 30 mph and arrived 1 minute late. How long was the trip. D= 60 * T - 1 + 30*T+1 60T+30T -1+1 90 t

Math- Need Help
If 5x +4y and 4x +3y =5 15x +12y =18 16x +12y = 20 31x/31= 38/31 x= 1 7/31 20x +16y =24 20x +15y = 5 31/y/31 = 29/31 y=29/31 x +y = 1 7/31 + 29/31 2 5/31

Math
If 5x +4y and 4x +3y =5 15x +12y =18 16x +12y = 20 31x/31= 38/31 x= 1 7/31 20x +16y =24 20x +15y = 5 31/y/31 = 29/31 y=29/31 x +y = 1 7/31 + 29/31 2 5/31

Math
3x - 2= 8 3x-2+2 = 8+2 3x= 10 3x/3 = 10/3 x= 3 1/3

Math
What percentage is \$6 of \$20? 6/20 *100 = 30%

Math
what is 30% of \$325? 30/100 *325= \$97.50

Math
(x+3) (x+9) x sqrt +27

Math
Thank you

Math
(x-1) (x-8) x sqrt +8

Math
Thank you

Math
Sorry a= b/5

Math
Ok 5a=b 5a/5 =b/5 answer = b/5 Thank you

Math
If 5a =b, then a = answer = 5(a+b)

Math
Thank you. I was going crazy trying to think what else to do

Math- Please tell me what I did wrong!
(4x-1)/5 =2x+1 5*(4x-1)/5 =2x +1 *5 4x-1 = 10x+5 4x-1 +1 =10x +5+1 4x = 10x+6 4x-10x = 10x+6-10x -6x = 6 -6x/-6 = 6/-6 x = -1

Math

Math
Solve for x 4 x-1 / 5 = 2x +1

Math
Ok thank you

Math
Which of the following is a solution of the inequality -3 is less than 2x +1 is less than 5 Answer = 4

Math
The height of a cylinder is 15ft with a radius of 7ft. What is the radius of a similar cylinder with a height of 10ft. Is the answer 4.66 ft?

Math
Thank you

Math
A student needed to get a final grade of 90 to get a grade of A for the semester. He scored 83, 85, 92, 86, and 87. If the last two scores would be counted as one score. What is the least grade the student would need to get to get a final grade of A? Is the answer 45?

Math
Thanks again

Math
How many games has the team won so far? 42 How many games will they play this season? 110 How many games do they need to win? 77 How many more games do they need to win? 35

Math
A baseball team wins 60% of their first 70 games. They have 40 games left in the season. How many more games do they need to win to get a perfect 70%. Is the answer 35%?

Math
Thank you

Math
The perimeter of a rectangle is 62 cm. The length is 5 less 2 times the number x. What is the width? Is the answer 18?

Math
Thank you

Math
6, 7, 8, 9, 12, 13, 14, 16, 23, 23 A student did the following push ups in gym class. Which of the following would be used to say he did the most push ups? mean median mode mean-13.1 median- 12.5 mode-23 The answer is the mode?

Math
A student needed to get a final grade of 90 to get a grade of A for the semester. If the last two scores would be counted as one score. What is the least grade the student would need to get to get a final grade of A? Is the answer 45? /

Math
Thank you

Math
8 ft of ribbon cost \$4.80. The ribbon was cut into pieces measuring 16 inches. What is the cost of each piece? Is the answer \$0.80?

Math
Thank you!

Math
There are 24 marbles in a jar. Nine of the marbles are yellow and the remainder are blue. What is the probability of picking one blue marble from the jar? Is the correct response 5/8?

Math
No it did not give an average. This makes sense. Thank you. If it did give an average. The answer would then be 5+5+9+x+12 27+ x/5 = ?

Math
Are you saying I could write any number there. My thinking is that the range of all the children is 7 therefore the 5th child would be 12. I am completely lost and have no idea the solution here!!!!

Math
There are 5 students in a classroom. The median age of the children are 9. Two of the children ages are 5. The range of all the students are 7. What is the age of the second to the last child? 5, 5, 9, ? , 12 Is the answer 12? May you please give an explanation to this problem.

math
A car travels 200 miles at 55 miles per hour at 22 miles per gal. How many gallons of gasoline would it use in 5 hours? my answer is 12.5 gals.

jones high school
Thank you

jones high school
which of the following represents a function on a line. ellipse circle horizontal vertical Is the correct answer vertical?

math
8/240=x/720 240x=5760 240x/240= 5760/240 x=24

math
8ft ribbon cost \$4.80. The ribbon was cut in pieces of 16 in. What is the cost of each piece? \$0.80

DIFF. CALCULUS
A particle is moving along the parabola 4y = (x + 2)^2 in such a way that its x-coordinate is increasing at a constant rate of 2 units per second. How fast is the particle's distance to the point (-2, 0) changing at the moment that the particle is at the point (2, 4)?

chemistry
A solution containing 4.5 grams of non-electrolyte dissolved in 125 grams of water freezes at -0.372 degrees. Calculate the molar weight of the solute.

Science
good day! can you please give me the wave explanation for colors? i need it for my report tomorrow. i need an immediate answer please!

Math
1hr and 45 mins.

biology / plasmolysis of human red blood cells
Plasmolysis of human red blood cells would occur if the cell were in .. solution A) isotonic B) hypertonic C) hypotonic D) none of these I think it's B. I'm not too sure though.

Identifying controls and Variables
i need help with control and variables sheet with the spongebob and bikini bottom pals

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