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2 years ago

Which table of values could be generated by the equation 10x + 5y = 15?

1 answer:

3 0

Write the given equation AS FOLLOWS:
10x + 5y = 15
5y = 15 - 10x
Divide through by 5.
y = 3 - 2x

Test x=0: y = 3 - 2*0 = 3 => (0,3) Correct for B
Test x=1:. y = 3 - 2*1 = 1 => (1,1) Correct for B
Test x=2: y = 3 - 2*2 = -1 => (2,-1) Correct for B

Answer: B

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After placing an equation into his calculator Rob got the following table. He then determine that X=6 when f (x) = -4 is he corr

icang [17]

Answer:

No, unless the function decides to follow a different pattern. See more explanation below.

Step-by-step explanation:

He is wrong, the table doesn't tell us what happens at x=6.

It does tell us the following:

1) When x=-4, f(x)=6.

2) When x=-2, f(x)=3.

3) When x=0, f(x)=-1.

4) When x=2, f(x)=-4.

So maybe he got it the x and f(x) value switched in his brain.

Because according to 1) x=-4 when f(x)=6.

If the points keep having x increase while y decreases, then every x>2 will have a y less than -4 correspond to it.

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2 years ago

The ratio of Melanie's allowance to Jacob's allowance is 4.1 to 20.5. If Jacob gets $5.00, how much allowance does Melanie get?

BartSMP [9]

If Melanie get's 4.10$, then Jacob get's 20.50$.

We can divide to get the unit rate:

20.50 ÷ 4.10 = 5

This means that if Jacob gets 5$, then Melanie will get 1$.

So in this case, Melanie get's 1$.

6 0

2 years ago

Read 2 more answers

Body armor provides critical protection for law enforcement personnel, but it does affect balance and mobility. The article "Imp

yKpoI14uk [10]

Answer:

No, there is not enough evidence to support the claim that true average task time with armor is less than 2 seconds.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that true average task time with armor is less than 2 seconds.

Then, the null and alternative hypothesis are:

$H_0: \mu=2\\\\H_a:\mu< 2$

The significance level is 0.01.

The sample has a size n=52.

The sample mean is M=1.95.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=0.2.

The estimated standard error of the mean is computed using the formula:

$s_M=\dfrac{s}{\sqrt{n}}=\dfrac{0.2}{\sqrt{52}}=0.028$

Then, we can calculate the t-statistic as:

$t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{1.95-2}{0.028}=\dfrac{-0.05}{0.028}=-1.803$

The degrees of freedom for this sample size are:

$df=n-1=52-1=51$

This test is a left-tailed test, with 51 degrees of freedom and t=-1.803, so the P-value for this test is calculated as (using a t-table):

$P-value=P(t$

As the P-value (0.039) is bigger than the significance level (0.01), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that true average task time with armor is less than 2 seconds.

3 0

2 years ago

Mr. Bray prepares a list of 43 US presidents, 8 of whom died in office. Then 18 of his students each select a

shutvik [7]

Answer:

.98

Step-by-step explanation:

1-(35/43)^18 im in stats too tehee

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2 years ago

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Carmen buys 153 shares of Cawh Consolidated Banks, each of which pays a constant yearly dividend of $7.14. After six years, how

Flauer [41]

<span>After 6 years of having 153 shares of Cawh Consolidated Banks, each of which pays a constant yearly dividend of $7.14, the value Carmen will receive in dividends is d. $6,554.52. This is the yearly dividend, so the value each of shares pays after 6 years is: $7.14 * 6 = $42.84. There are 153 shares and since each pays $42.84 after 6 years, the total value for all 153 shares after 6 years is: 153 * $42.84 = $6,554.52.</span>

5 0

2 years ago

Read 2 more answers