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Anestetic [448]
3 years ago
13

paula earned a 56% on her science test if she got 14 problems correct then how many questions were on the test

Mathematics
2 answers:
Likurg_2 [28]3 years ago
5 0
To find the original amount, you do the amount she got correct divided by (1 minus the percentage). 

Let P = amount of problems on the test. 

P = 14 / (1 - 0.56) 
= 14/ 0.44
≈ 31.818 repeating. 

You can have part of a question (in this math, that is. Partial credit IRL exists) so we round to the nearest whole question, 32. 

The test had 32 questions. 
sweet-ann [11.9K]3 years ago
3 0
56% = 14 questions

1% = 14 ÷ 56 = 0.25 questions

100% = 0.25 x 100 = 25 questions

Answer: 25 questions.
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Katyanochek1 [597]

Answer:

( 3x + 5 ) ( x - 4 )

Step-by-step explanation:

1.) Factors of 20 = (1,20) (2,10) and (4,5)

2.) ( 3x + 5 ) ( x - 4 )

3.) 3x - 12x + 5x - 20 = 0

4.) 3x^2 + 7x - 20 = 0

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3 years ago
If 1,000 gallons of oil cost $4,861, what is the cost of 35 gallons
Paul [167]

Answer:

$170.14

Step-by-step explanation:

4,861 / 1,000 = $4.861 per gallon

35 x $4.681 = $170.135, so you need to round up to the nearest penny

6 0
2 years ago
Read 2 more answers
Is 63 greater than 48.1 or less than<br><br>PLEASE HELP QUICKLY AS POSSIBLE THANK YOU :)​
timofeeve [1]

Answer:

63 is greater than 48.1 ...

63 > 48.1

Step-by-step explanation:

63 is greater than 48 remember. So you need to remove the [.1] and focus on the 63 and 48.

<h3>Hope it helps!!</h3><h3><em>Please</em><em> </em><em>mark me as the brainliest</em><em>!</em><em>!</em><em>!</em></h3>

<em>Thanks</em><em>!</em><em>!</em><em>!</em><em>!</em><em>❤</em><em>❣</em><em>❤</em>

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5 0
3 years ago
Read 2 more answers
Simplify 616/196<br> thirteen points for whoever answers the best please help!
mixas84 [53]
That’s the equation for pi, but the simplified fraction is 22/3 (please mark brainliest)
3 0
3 years ago
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The polynomial function y = x3 -3x2 + 16x - 48 has only one non-repeated x-intercept. What do you know about the complex zeros o
earnstyle [38]
• First way to solve:
We'll manipulate the expression of the equation:

y=x^3-3x^2+16x-48\\\\ y=x^2(x-3)+16(x-3)\\\\ y=(x-3)(x^2+16)

If we have y=0:

x-3=0~~~or~~~x^2+16=0\\\\ x=3~~~or~~~x^2=-16\\\\ x=3~~~or~~~x=\pm\sqrt{-16}\\\\ x=3~~~or~~~x=\pm4i

Then, the function has one real zero (x=3) and two imaginary zeros (4i and -4i).

Answer: B


• Second way to solve:

The degree of the function is 3. So, the function has 3 complex zeros.

Since the coefficients of the function are reals, the imaginary roots are in a even number (a imaginary number and its conjugated)

The function "has only one non-repeated x-intercept", then there is only one real zero.

The number of zeros is 3 and there is 1 real zero. So, there are 2 imaginary zeros.

Answer: B.
3 0
2 years ago
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