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Bas_tet [7]
3 years ago
5

Which equation models this problem?

Mathematics
2 answers:
solniwko [45]3 years ago
5 0
It's D. 9 washcloths x the price (P) = 36.90

Furkat [3]3 years ago
3 0
So unit price times #of cloths=final price

unit price times 9=36.90
so 9x=36.90
divide both sides by 9
x=4.10

so D is the right answer
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Write the equation for a line that passes through (4,-1) and has a slope of 5
Anit [1.1K]

Answer:

y = 5x - 21

Step-by-step explanation:

Since we already know the slope, all we need to do is plug the values of x and y into the equation.

y = 5x + b

-1 = 5(4) + b

-1 = 20 + b

-21 = b

The equation is y = 5x - 21.

5 0
3 years ago
A recent study examined hearing loss data for 1981 U.S. teenagers. In this sample, 369 were found to have some level of hearing
ruslelena [56]

Answer:

There is no enough evidence to support the claim that the proportion of US teens that have some level of hearing loss differs from 20%.

P-value=0.12

Step-by-step explanation:

We have to perform a test of hypothesis on the proportion.

The claim is that the proportion of US teens that have some level of hearing loss differs from 20%.

Then, the null and alternative hypothesis are:

H_0: \pi=0.20\\\\H_a:\pi\neq0.20

The significance level is assumed to be 0.05.

The sample, of size n=1981, has 369 positive cases. Then, the proportion is:

p=X/n=369/1981=0.186

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.2*0.8}{1981}}=\sqrt{ 0.000081 }= 0.009

Now, we can calculate the statistic z:

z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.186-0.20+0.5/1981}{0.009}=\dfrac{-0.014}{0.009}=-1.556

The P-value for this two-tailed test is:

P-value=2*P(z

The P-value is below the significance level, so the effect is not significant. The null hypothesis failed to be rejected.

There is no enough evidence to support the claim that the proportion of US teens that have some level of hearing loss differs from 20%.

7 0
3 years ago
12 times 12 equal 144
Nataly_w [17]

Answer:

Yes, it does

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which trigonometric ratio represents Sine (sin)?
saul85 [17]
<span>the hypotenuse (cos = adj/hyp).
</span><span>the hypotenuse (sin = opp/hyp).
</span><span>the hypotenuse (tan = opp/adj).
</span>
hope this helps........
7 0
3 years ago
Mr. Taylor has 24 sports trophies. Of the trophies, 1
andreev551 [17]

Answer: 18 wrestling trophies.

Step-by-step explanation:

5 0
3 years ago
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