3 years ago

Can someone please help me with this thank u

Mathematics

1 answer:

MrRa [10]3 years ago

5 0

Answer:option 3

Step-by-step explanation:

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Pls help!!! Which steps would you use to solve this equation? Check all that apply.

hram777 [196]

Answer:

you subtract 7 from both sides

Step-by-step explanation:

3 0

3 years ago

I request assistance on answering this question

Ket [755]

The answer is going to be6/8

6 0

3 years ago

The two triangles are similar. What is the value of x?

Ghella [55]

Answer:

x=5

Step-by-step explanation:

We can write ratios to help us solve

4x 12 +3

---------- = ------------

3x+1 12

Using cross products

4x*12 = (3x+1) * (15)

48x = 45x +15

Subtract 45x from each side

3x =15

Divide by 3

3x/3 =15/3

x=5

5 0

3 years ago

Gabrielle's age is three times Mikhail's age. The sum of their ages is 56, what is Mikhail’s age?

4vir4ik [10]

Gabrielle's age is 3x (in which x is mikhail's age)
the sum is 56 so 3x+x=56

3x+x=56
4x=56
x=14

since x was mikhail's age, mikhail is 14 years old

6 0

3 years ago

Suppose that many large samples are taken from a population and that the

rewona [7]

Answer:

$0.22 -1 *0.029 =0.191$

$0.22 +1 *0.029 =0.249$

And the best option would be:

D. (0.191 to 0.249)

Step-by-step explanation:

For this case we know that the mean is:

$\bar X = 0.22$

And the standard error is given by:

$SE = 0.029$

We want to construct a 68% confidence interval so then the significance level would be :

$\alpha=1-0.68 = 0.32$ and $\alpha/2 =0.16$ . The confidence interval is given by:

$\bar X \pm z_{\alpha/2} SE$

Now we can find the critical value using the normal standard distribution and we got looking for a quantile who accumulate 0.16 of the area on each tail and we got:

$z_{\alpha/2}= 1$

And replacing we got:

$0.22 -1 *0.029 =0.191$

$0.22 +1 *0.029 =0.249$

And the best option would be:

D. (0.191 to 0.249)

5 0

3 years ago