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prisoha [69]
3 years ago
13

28 students in the class took an algebra test. If 12 students pass the test what percent failed

Mathematics
1 answer:
BabaBlast [244]3 years ago
5 0

Answer:

57% of the class failed the test.

Step-by-step explanation:

28 - 12 = 16

16/28 = 0.57142857142 ≈ 0.57

Thus, 57% of the class failed the test.

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An explosion causes debris to rise vertically with an initial velocity of 160 feet per second. What is the speed of debris when
lisov135 [29]
The question is asking what v_final is, given that v_initial is at 300 feet. and v_initial is at 0 feet.  
We know there will be a constant downward acceleration of 32.15 ft/s^2.
 Use the following equation: 
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 v_final^2 = (160 ft/s)^2 + 2(-32.15 ft/s^2)(300 ft) = 6310 ft^2/s^2
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5 0
3 years ago
Find the slope and y-intercept of the line shown below and please someone help me fast.thank you
aksik [14]

9514 1404 393

Answer:

  • slope: -2/3
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Step-by-step explanation:

The line crosses the y-axis 1 unit below the x-axis. That makes the y-intercept be -1.

The line crosses through another grid intersection 3 units to the right and 2 units down from the y-intercept. That is, the slope is ...

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3 0
3 years ago
Solve to find side C please
Alex73 [517]

Answer:

c= 18.4

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

cos theta = adj/ hyp

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Multiply each side by c

c cos 57 =10

Divide each side by cos 57

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Rounding to the nearest tenth

c= 18.4

6 0
3 years ago
A company’s stock was selling at $25 a share a month later it was selling at $30 a share what is the percent increase
rjkz [21]

Answer:

20% increase

Step-by-step explanation:

To find the percent increase, you can divide the increase value by the original: 30/25 = 1.2 --> 120%. Next, since they ask for the percent of increase, you can subtract 1 or 100% from your answer which would give you a final answer of 20% increase.

4 0
3 years ago
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Inessa05 [86]

Answer:

14.77

Step-by-step explanation:

Are you not able to use a calc? I can sketch out the long division if you need it!

5 0
3 years ago
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