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3 years ago

Which expression is equivalent to (-4y-x)-(y-9x) ?

Mathematics

1 answer:

777dan777 [17]3 years ago

7 0

Answer:

-5y + 8x

Step-by-step explanation:

$(-4y-x)-(y-9x)\\\\-4y-x-(y-9x)\\\\\rightarrow-(y-9x)*-1=-y+9x\\\\-4y-x-y+9x\\\\-4y-y+9x-x\\\\\boxed{-5y+8x}$

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Which graphs represents y=2/3x-4

wlad13 [49]

Answer:

It should be A

Step-by-step explanation:

This is because when we insert 3 into x we would get:

y = -2

By looking at the pics only one looks setting to the formula

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3 years ago

Read 2 more answers

Fill in the box with a whole number to make a true statement. 83 = 9

Artyom0805 [142]

If you are looking for 83 = x/9, then you must multiply 83 by 9 to get the numerator.
83 x 9 = 747.
If you are looking for x/83 = 9, then you must multiply 83 by 9 to get the numerator.
83 x 9 = 747.
Your missing whole number is 747.
Hope this helps!

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3 years ago

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6. Lines C and D below are cut by transversal, t. Which of

ra1l [238]

Answer:

m∠8 = m∠2, option G

Step-by-step explanation:

Angles 8 and 2 are alternate interior angles, which means they are equal. Thus, the answer is option G, m∠8 = m∠2

8 0

3 years ago

Test the claim that the proportion of men who own cats is smaller than the proportion of women who own cats at the .10 significa

nata0808 [166]

Answer:

The test statistics is $t = -1.40$

The critical value is $Z_{\alpha } = 2.33$

The null hypothesis is rejected

Step-by-step explanation:

From the question we are told that

The sample size for men is $n_1 = 80$

The sample proportion of men that own a cat is $\r p _M = 0.40$

The sample size for women is $n_2 = 80$

The sample proportion of women that own a cat is $\r p_F = 0.51$

The level of significance is $\alpha = 0.10$

The null hypothesis is $H_o : \r p _M = \ r P_F$

The alternative hypothesis is $H_a : \r p _M < \r p_F$

Generally the test statistic is mathematically represented as

$t = \frac{(\r p_M - \r p_F)}{\sqrt{\frac{(p_M*(1-p_M)}{n_1 } } + \frac{p_F*(1-pF)}{n_2 } }$

=> $t = \frac{(0.40 - 0.51)}{\sqrt{\frac{(0.40 *(1-0.41)}{80} } + \frac{0.51*(1-0.51)}{80 } }$

=> $t = -1.40$

The critical value of $\alpha$ from the normal distribution table is

$Z_{\alpha } = 2.33$

The p-value is obtained from the z-table ,the value is

$p-value = P( Z < -1.40) = 0.080757$

=> $p-value = 0.080757$

Given that the $p-value < \alpha$ then we reject the null hypothesis

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3 years ago

Tom owes his uncle $12 and he owes his aunt $11. Which statement is true? A. Tom has $23. B. Tom has $1. C. Tom owes $23. D. Tom

Tju [1.3M]

There is no given information saying how much money Tom has, so you can eliminate A and B, and he is the one in debt to both his aunt and uncle, so you need to add $11 and $12 to get $23, which is C

5 0

4 years ago