2 years ago

Can you match the teacher's comments to the definitions?

Mathematics

1 answer:

Afina-wow [57]2 years ago

3 0

Answer:

Daniel =Were you thinking of perpendicular lines?

Oris= It seems like you've got the basic idea, but your definition could be more precise.

Kaoris= Yes well done...

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5a + 4b^2<br> (if a = -11 and b = 3)

Degger [83]

5(-11)+4(3)^2 = -19
The answer is -19

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3 years ago

The equation A = x(x - 7) describes the area, A, of a rectangular flower garden, where x is the width in feet.

mamaluj [8]

x(x-7)=8

x^2-7x-8=0

(x-8)(x+1)=0

so x=8 (and -1 but width can’t be negative)

So your answer is C. 8

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3 years ago

Your boss gave you a raise. Your weekly salary went from $375 to $450. What was your percent raise?

Yuri [45]

<span>1. Find the difference
2. Divide the difference by the original number it went up from.
</span>
450-375 = 75

75/375 = 0.2

You got a 20% raise.

Proof:
375*.2 = 75
375+75 = 450

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3 years ago

Help please, im confused on what exactly y is

Amanda [17]

Answer:

Step-by-step explanation:

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3 years ago

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Researchers wondered if there was a difference between males and females in regard to some common annoyances. They asked a rando

Zinaida [17]

Answer:

Step-by-step explanation:

Males proportion $p_1 = \frac{163}{532} =0.3064$

Females proportion $p_2 = \frac{203}{589} =0.3447$

$H_0: p_1 = p_2\\H_a: p_1$

(one tailed test for comparison of proportions)

Test statistic = $\frac{p_1-p_2}{p(1-p)\sqrt{\frac{1}{n_1}+\frac{1}{n_2} } }$

=-1.3641

Here p= combined proportion = $\frac{163+203}{532+589} \\=0.3291$

p value = 0.0869

Since p >0.05, accept null hypothesis.

The evidence does not suggest a higher proportion of females are annoyed by this behavior

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3 years ago