All categories

3 years ago

7(5x - 13) = 14

Mathematics

1 answer:

vfiekz [6]3 years ago

5 0

Answer:

Part A, one solution

Part B, x=3

Step-by-step explanation:

divide both sides of the equation by 7 (5x-13=2)

move the constant to the right hand side and change its sign (5x=2+13)

add numbers (5x=15)

divide both sides of the equation by 5 (x=3)

hope this helps, have a good day

You might be interested in

At the end of each year, Carl and Linda Munson will deposit $2,100 into a 401k retirement account.

Vanyuwa [196]

Answer:

you get the answer yet im trying to figure it out to

Step-by-step explanation:

6 0

3 years ago

The water diet requires you to drink two cups of water every half hour from the time you get up until you go to bed, but otherwi

Elan Coil [88]

Answer:

$7-3.182 \frac{13.638}{\sqrt{4}}= -14.698$

$7+3.182 \frac{13.638}{\sqrt{4}}= 28.698$

Step-by-step explanation:

For this case we have the following info given:

Weight before diet 180 125 240 150

Weight after diet 170 130 215 152

We define the random variable $D = before-after$ and we can calculate the inidividual values:

D: 10, -5, 25, -2

And we can calculate the mean with this formula:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

And the deviation with:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i- \bar X)^2}{n-1}}$

And after replace we got:

$\bar D= 7, s_d = 13.638$

And the confidence interval for this case would be given by:

$\bar D \pm t_{\alpha/2} \frac{s_d}{\sqrt{n}}$

The degrees of freedom are given by:

$df = n-1= 4-1=3$

For the 95% of confidence the value for the significance is $\alpha=0.05$ and the critical value would be $t_{\alpha/2}= 3.182$ . And replacing we got:

$7-3.182 \frac{13.638}{\sqrt{4}}= -14.698$

$7+3.182 \frac{13.638}{\sqrt{4}}= 28.698$

6 0

3 years ago

Please help me on this I'am still stuck on it thank you all

brilliants [131]

77 is the median score for rhis propblem

7 0

3 years ago

Read 2 more answers

A customer service survey was conducted of 500 customers: 250 men and 250 women. The data on one of the questions show that 175

Lisa [10]

Answer:

1,335

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

I need help on doing this problem

Mamont248 [21]

Hey mate !! 

Step-by-step explanation:

[ Refer to the attachment ]

8 0

3 years ago