All categories

4 years ago

1/5 (x − 15)=7 help solving it

Mathematics

2 answers:

tamaranim1 [39]4 years ago

8 0

Answer:

Step-by-step explanation:

1/5 (x − 15) = 7

×5 ×5

x - 15 = 35

+15 +15

x = 50

natali 33 [55]4 years ago

6 0

Answer: 50

Step-by-step explanation:

1. Because 1/5 is <em>outside</em> of the parentheses, multiply everything <em>inside</em><em> </em>the parentheses by 1/5. You should have 1/5x-3=7.

2. To get the variable and nonvariable in different sides, add 3 to both sides. You should have 1/5x=10

3. Divide both sides of the equation by 1/5 to isolate the variable. X is 50.

To double check, just input 50 where the x was and solve 1/5(50-15). You'll get 7

I hope this helped you:)

You might be interested in

Construct an interval estimate for the given parameter using the given sample statistic and margin of error. For μ1-μ2, using x¯

maks197457 [2]

Answer: CI = (0, 8)

Step-by-step explanation: Confidence interval for difference between mean is given below as

Lower limit

= (x1 - x2) + margin of error

Upper limit

= (x1 - x2) - margin of error

where x1 - x2 = 8 and margin of error = 8

For lower limit,

= 8 - 8 = 0

For upper limit

= 8 + 8 = 16

Hence CI = (0, 8)

4 0

3 years ago

Write -33/12 as a mixed number in reduced form. -2 -1 -2 -2

AysviL [449]

-33/12. Lets forget the negative symbol.

12 goes into 33, 2 times with 9 remaining.

So now get the negative sign back.

It will be -2 9/12 but you can reduce that to -2 3/4.

Hope this helps :)

7 0

3 years ago

Choose which line represents the line of the best fit

erastova [34]

Answer:

Step-by-step explanation:

I would say B

7 0

4 years ago

Read 2 more answers

The equation "c/5 + $1.00 = $9.00 can be used to find the total cost (including the delivery charge per person) for flowers purc

worty [1.4K]

<span>9-1 is 8 X 5 is 40, the answer is B.</span>

5 0

3 years ago

Help me pleasee i really need help

Usimov [2.4K]

For ALL of these....use these formulas...

Finding Markup%

Markup=Selling Price-Cost

Markup%= $\frac{Markup}{Cost}*100$

1.) Recliner Chair. Cost=$61 Sell Price=$75.99

Markup= $75.99-$61
M=$14.99

Markup%= $\frac{14.99}{61} *100$

Markup%=24.5% (Markup less than 25%)

2.) Basket Ball. Cost=$23.75 Selling Price=$29.95

Markup= $29.95-$23.75
M=$6.20

Markup%= $\frac{6.20}{23.75} *100$

Markup%=26.1 (Markup greater than 25%)

3.) Necklace. Cost=$15 Selling Price=$19.25

Markup= $19.25-$15
M=$4.25

Markup%= $\frac{4.25}{15}*100$

Markup%=28.3 (Markup greater than 25%)

4.)Notepad. Cost=$1.19 Selling Price=$1.50

Markup=$1.50-$1.19
M=$0.31

Markup%= $\frac{0.31}{1.19}*100$

Markup%=26.1 (Markup greater than 25%)

5.)Speakers. Cost=$44.55 Selling Price=$54.99

Markup=$54.99-$44.55
M=$10.44

Markup%= $\frac{10.44}{44.55} *100$

Markup%=23.4 (Markup less than 25%)

6.) DVD. Cost=$10.80 Selling Price=$12.95

Markup=$12.95-$10.80
M=$2.15

Markup%= $\frac{2.15}{10.80}*100$

Markup%=19.9 (Markup less than 25%)

I hope this benefits other people in the future. :D

5 0

3 years ago