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3 years ago

What expression is equivalent to 3/5(3y+15)

Mathematics

1 answer:

choli [55]3 years ago

4 0

\left[y \right] = \left[ -5\right][y]=[−5] totally answer

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HELP ! -4.1 , - 3.5 , 5.3 , - 1.4 order from least to greatest !!!

Ira Lisetskai [31]

Answer:

-4.1, -3.5, -1.4, 5.3

Step-by-step explanation:

hope this helps!

5 0

3 years ago

Which shows the correct method for solving the equation below?<br> 1/3 (y-9) =3

lyudmila [28]

Answer:

$y=18$

Step-by-step explanation:

we have

$\frac{1}{3}(y-9)=3$

Multiply by $3$ both sides

$3*(\frac{1}{3}(y-9))=3*3$

$(y-9)=9$

Adds $9$ both sides

$(y-9)+9=9+9$

$y=18$

3 0

3 years ago

Adelle solved the equation 4x/7 -6= -20 as shown. Fill in the correct justification for each step. [ Look at the picture. Please

grigory [225]

Answer:

2)add both sides by 6

3) multiply both sides by 7

4)divide both sides by 4

Step-by-step explanation:

7 0

2 years ago

A study of 4,430 U.S. adults found that 2,913 were obese or overweight. The 95% confidence interval for the proportion of adults

IrinaK [193]

Answer:

$0.658 - 1.96\sqrt{\frac{0.658(1-0.658)}{4430}}=0.644$

$0.658 + 1.96\sqrt{\frac{0.658(1-0.658)}{4430}}=0.672$

We are 95% confident that the true proportion of adults overweight is between 0.644 and 0.672

Step-by-step explanation:

We can begin founding the estimated proportion of people overweight:

$\hat p =\frac{2913}{4430}= 0.658$

We need to find a critical value for the confidence level using the normal standard distribution. We know that 95% is the confidence level, then the significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the true population proportion of interest is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

Replacing the data provided we got:

$0.658 - 1.96\sqrt{\frac{0.658(1-0.658)}{4430}}=0.644$

$0.658 + 1.96\sqrt{\frac{0.658(1-0.658)}{4430}}=0.672$

We are 95% confident that the true proportion of adults overweight is between 0.644 and 0.672

6 0

2 years ago

What is the value of m<br> What is the value of n

NeTakaya

Answer:

Step-by-step explanation:

M is 90 degrees anytime you see that square it equals 90 and any time you see that half circle that is obtuse so more than 90 degrees and doing the math the answer to n would be around 127

6 0

2 years ago