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3 years ago

Find y when x=4, if y=7 when x=14

Mathematics

1 answer:

ycow [4]3 years ago

7 0

Answer: y = 2 when x = 4

i looked for a correlation in the given problem, and i realized that "y" will equal half of whatever "x" equals. so when x = 4, y = 2.

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???? Help me please

liberstina [14]

1) I have no idea... -.-

2) $80

3) 12

4) 13

5) 42

4 0

2 years ago

What is f(−3) for the function f(a)=−2a2−5a+4?

Readme [11.4K]

Answer:

f(-3)

f(a) = -2a² - 5a + 4

Substitute a with its value, -3

f(-3) = -2(-3²) - 5(-3) + 4

f(-3) = -2(9) + 15 + 4

f(-3) = -18 + 19

f(-3) = 1

the value of f(-3) is 1.

7 0

2 years ago

Read 2 more answers

In a recent year, grade 8 Washington State public school students taking a mathematics assessment test had a mean score of 281 w

sweet-ann [11.9K]

Answer:

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = 0.0217

Step-by-step explanation:

Step(i):-

Mean of the Population (μ) = 281

Standard deviation of the Population = 34.4

Let 'X' be a random variable in Normal distribution

Given X = 290

$Z = \frac{x -mean}{\frac{S.D}{\sqrt{n} } } = \frac{290-281}{4.44} = 2.027$

Step(ii):-

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = P( Z > 2.027)

= 0.5 - A ( 2.027)

= 0.5 - 0.4783

= 0.0217

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = 0.0217

6 0

3 years ago

What is three million, seven hundred twenty four in number form

iris [78.8K]

The answer would be 3,000,724.

5 0

2 years ago

Read 2 more answers

Type < = to mean <

Natalija [7]

Answer:

He added $25 to the contents of his wallet.

Step-by-step explanation:

Here's what's happening, symbolically:

$6 + m = $31, or m = $25. Jake added $25 (represented by m) to the contents of his wallet.

4 0

3 years ago