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antiseptic1488 [7]
2 years ago
13

How many questions out of 42 do I need to get right to score 75?​

Mathematics
1 answer:
Brut [27]2 years ago
8 0

Answer:

31 questions, but it's impossible to score 75%.

Step-by-step explanation:

It's impossible to get exactly a score of 75% out of 42 questions. However, you can get the next closest percentage, which is rounded up to 74% with 31 questions right out of 75.

This is because 31 / 42 = 0.738... You can round 0.738 to 0.74. Then multiply 0.74 by 100, which gives you 74. This means the closest score you can get to 75 is 74% with 31 questions.

You can also score 76% with 32 questions right out of 42 questions. This is because 32 / 42 = 0.761... You can round 0.761 to 0.76. Then multiply 0.76 by 100, which gives you 76.

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Find the other x-intercept for the parabola defined by this equation y=2x2+3-2​
ASHA 777 [7]

Answer:

( \frac{1}{2}, 0 )

Step-by-step explanation:

To find the x- intercepts let y = 0, that is

2x² + 3x - 2 = 0

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × - 2 = - 4 and sum = + 3

The factors are + 4 and - 1

Use these factors to split the x- term

2x² + 4x - x - 2 = 0 ( factor the first/second and third/fourth terms )

2x(x + 2) - 1 (x + 2) ← factor out (x + 2) from each term

(x + 2)(2x - 1) = 0

Equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

2x - 1 = 0 ⇒ 2x = 1 ⇒ x = \frac{1}{2}

The x- intercepts are (- 2, 0 ), ( \frac{1}{2}, 0 )

8 0
3 years ago
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Honestly man i don’t know Im in 6th grade bro
6 0
3 years ago
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Answer:

<u><em>C. strong negative</em></u>

Step-by-step explanation:

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5 0
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GREYUIT [131]

Answer:

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Step-by-step explanation:

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X + 3y = 1<br> 5x +6y = 14
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Answer:

1. X = 1 - 3y

2. -5/6x + 7/3

Those are the answers to the problems

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3 years ago
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