# Questions Asked onApril 16, 2020

1. ## math - modular arithmetic

In the statement below, the two blanks can be filled by positive single-digit numbers in such a way that the statement is always true: $$\text{If }2x\equiv y+5\ (\bmod\ 9)\text{, then }x\equiv \underline{\ \ \ }\,y+\underline{\ \ \ }\ (\bmod\ 9).$$What is

2. ## Math/Finance

Jose started a small business and wants to determine when the business will become profitable. His operating costs can be expressed as y=$10,000+$3,000x, where x is the number of months he stays in business. His sales revenues can be expressed as

3. ## MATH

Buford pays for a $4000.00 vacation with a credit card that has a 20% APR. He decides to make$200.00 monthly payments. What is the total amount of interest and fees based on the APR?

6. ## Geometry

Use triangle ABC to write the value of tanA as a ratio. Triangle A B C has segment A B that measures 45 units, B C is 28 units, and A C measures 53. Angle B is a right angle. What is the ratio for tanA? Enter your answer as a fraction in simplest form,

7. ## Physics

5. Salim has a paper route. In the winter time, he puts his newspapers on a toboggan to pull them through the snow. The combined mass of the papers and the toboggan is 24 kg. The coefficient of static friction between the toboggan and the snow is 0.18. The

8. ## MATH

Levi would like to use a credit card to make a $3000 purchase. He is considering two credit options. The first requires a down payment of$1000 followed by monthly payments of $125. The second requires a down payment of$1300 followed by monthly payments

9. ## Geometry

In right triangle ABC, ∠A is a right angle, m∠B=44∘, and AC=10. sin44∘≈0.695 cos44∘≈0.719 tan44∘≈0.966 Triangle A B C as described in the text. What is the measurement of BC? If necessary, round your answer to one decimal place, like

10. ## Geometry

Use triangle ABC to write the value of sinB as a ratio. Triangle A B C with right angle at A, and hypotenuse B C. The following measures are labeled in the figure: A B=5, B C=13, A C=12. What is the ratio for sinB? Enter your answer as a fraction in

62. ## History

This was the term given to the southern states after the end of the Reconstruction era. the first two letters are ne

63. ## Math

19 mm. Find the area of the coin to the nearest tenth. Use 3.14 for it.

64. ## History

Which country had the MOST spiritual influence on classical China? A) India Eliminate B) Japan C) Korea D) Mongolia

65. ## Geometry

A diameter of a circle has endpoints P(-10, -2) and Q(4, 6). a. Find the center of the circle. b. Find the radius. If your answer is not an integer, express it in radical form. c. Write an equation for the circle Can someone please help me by answering

66. ## Pre-calc

Find the instantaneous rate of change for the function at the given value. f(x)=5x+9 at x=2

67. ## Math

The 24 students in Mrs. Merchiore's homeroom sold 72 magazine subscriptions. The 28 students in Ms. Chapman's homeroom sold 98 magazine subscriptions. Whose homeroom sold more magazine subscriptions per student? How many?

Where did Mary Yu Chang before the Chinese Japanese war

16 = w/-2

2x^3-1=53

x^3/8-3=7

72. ## Math-Statistics

Mrs. Smith's reading class can read an average of 190 words per minute with a standard deviation of 20 words per minute. The top 3% of the class is to receive a special award. What is the minimum number of words per minute a student would need to read in

73. ## Social Studies

How does the CFA franc remove a trade barrier within West and Central Africa???

74. ## math

what is the quotient of -196 and -7???? A. -28 B. 28 C. 29 D. -29 PLZZZ I really need help fast!!!!

75. ## math

A prism is filled with 48 cubes with 3/4 unit side lengths

76. ## Math

Joe has 4 candy bars to share with 7 friends. What fraction of candy bars will each friend get?

78. ## A-Chem

Potentiometric Acid-Base Titration: The tasks to be performed in Experiment #6 include: A. Preparation of a 0.05 M solution of sodium hydroxide (titrant solution). B. Standardization of the titrant solution. C. Calibration of the pH-meter. D. Determination

79. ## PreAlgebra

I have 4 questions I’m stuck on, 1) -4K+2(5k-6)=-3k-39 2) -16+5n=-7(-6+8n)+3 3)10p+9-11-p=-2(2p+4)-3(2p-2) 4) 10n+3(8+8n)=-6(n-4)

80. ## Social Studies

How did European exploration affect East Asian countries?

81. ## Math

I really need help on this question. there are two triangles, triangle A has 4x+2 on one side, 7x+7 on the other, and 5x-4 as the base. triangle B however has x+3 as side one, 2x-5 as side two, and x+7 as the base. I need to write an expression in simplest

82. ## Math

An urn contains white and green balls. Six balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all balls drawn from the urn are white? Round

83. ## social studies

which one of the following conclusions is supported by the results of these studies? (1) characsticts other than ones name have no effect on academic acheivement. (2) unusual names do not determine intellectual development. (3) ethnic group membership is

84. ## math

Which is equivalent to 12(323)?

85. ## Math

Compare. use < , = , or > ? -5 _____9 A. < B. = C. >

86. ## World Studies

Throughout much of Latin America, people use rushing water to create? A. Swimming pools B. Wells C. Hydroelectricity D. Water parks I think C.

87. ## English

How is Anne Frank a complex character in The diary of Anne frank Act I and Act II

88. ## Math

Which set of numbers is contained in the set of rational numbers? A. whole numbers B. natural numbers C. integers D. all of the above*** Am I right?

asked by mommy's getting a LaRgE diet coke today
89. ## Algebra

Solve: 48+2x^2=16

90. ## Chemistry

A galvanic cell is constructed with a silver-silver chloride electrode, and a nickel strip immersed in a beaker containing 6.96 x 10-2 M solution of NiCl2. Determine the balanced cell reaction and calculate the potential of the cell. Enter in volts.

91. ## Math

The ratio of North American Butterflies to South American butterflies at a butterfly park is 7:5. The ratio of South American butterflies to European butterflies is 5:3. There are 105 North American butterflies at the butterfly park. How many South

92. ## math

How is the graph of y = 2x^2 + 4 different from the graph of y = 2x^2? a. It is shifted 4 units up b. It is shifted 4 units down c. It is shifted 4 units right d. It is shifted 4 units left A ball is thrown into the air with an upward velocity of 48 ft/2.

93. ## Math

Sarah wants to build a model of the Golden Gate Bridge for a school project. She decides that her scale model needs to be 1/20th the size of the real bridge. When she looked online, Sarah found that the base of the bridge is 4,200 ft long and 90 ft wide.

94. ## Math

Which of the following ordered pairs is a solution of the equation y = -4x(square)?

95. ## Engineering

There is circuit with one resistor, one capacitor, one switch and a dc voltage source resistor = 200Ω dc voltage = 10v Capacitor = 10 uf = 0.00001f 1. what is the RC time constant of the circuit? answer: (200Ω)(0.00001f)=0.002s 2. What is the time from

96. ## Chemistry

How do I use Hess's law to calculate enthalpy change? (when given two reactions) (1)Pb(s) + Cl2(g) --> PbCl2(s) Delta H(1)= -359.4 kJ (2)Ni(s) + Cl2(g) --> NiCl2(s) Delta H(2) = -305.3 kJ This is the third reaction: (3) PbCl2(s) + Ni(s) --> Pb(s) +

97. ## Physics

A plane flies at an altitude where the atmospheric pressure is 200mmHg. If the pressure inside the cabin is maintained at 760mmHg, calculate the net force on a window whose area is 800cm²

98. ## Chemistry

I have 2 questions. Can someone confirm my answers? 1.) Which of the following would almost always indicate a spontaneous reaction? A.) when a reaction requires the input of energy B.) if delta G is positive C.) when enthalpy is positive and entropy is

99. ## Chemistry

The change in entropy for a reaction is 3.0 J/(mol·K) at 25°C. Calculate the change in free energy for the reaction when ΔH = –394 kJ/mol and determine whether it will occur spontaneously at this temperature. Is the answer -395 kJ/mol? and second

100. ## Engineering

How long will a 100uf capacitor take to discharge through a 100Ω bleed resistor?

101. ## Physics/Science

What is the relationship between chemical energy and nuclear energy?

102. ## Chemistry

Write the balanced equation for vandadium (II) oxide with iron (III) oxide results in vanadium (V) oxide and iron (II) oxide. 2VO + Fe2O3 - V2O5 + 6FeO2 Not sure if the is correct. We're having to learn this on our own with just what notes we have,

103. ## precalculus

A radio tower is located 450 feet from a building. From a window in the building, a person determines that the angle of elevation to the top of the tower is 24 ∘ and that the angle of depression to the bottom of the tower is 21 ∘ . How tall is the

104. ## precalculus

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 24∘ From a point 2000 feet closer to the mountain along the plain, they

105. ## precalculus

A sector of a circle of radius 3 mm has an area of 4 mm². Find the central angle of the sector.