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3 years ago

13

Use division to find the decimal equivalent for 1/7 Be sure to continue

1 answer:

vovangra [49]3 years ago

6 0

Answer:

0.142854714

Step-by-step explanation:

1 divided by 7 on a calculator ... its gonna repeat

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There are 24 student's in a science class. Mr. Sato will give each pair of student's 3 magnets. So far, Mr. Sato has given 9 pai

Lady_Fox [76]

Well, a pair of students means two. if there are 24 students then there are: 24/2 = 12 pairs of students.

9 pairs already got their magnets. 12 - 9 = 3 pairs still need magnets.

each pair gets 3 magnets. So he needs 3*3 = 9 more magnets

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3 years ago

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Solve this question using elimination

Lorico [155]

$\left\{\begin{array}{ccc}y=2x-5\\y=2x+7&&\text{multiply both sides by (-1)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}y=2x-5\\-y=-2x-7\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad0=-12\qquad\text{FALSE}\\\\Answer:\ \boxed{NO\ SOLUTION}$

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2 years ago

Stacy and Neil painted 280 ft2 of their living room wall with 45 gallon of paint. How many square feet can they paint with 3 gal

Alecsey [184]

Answer:

They can paint 18. 66 sq ft with 3 gallons of paint.

Step-by-step explanation:

Total area painted = 280 sq ft

Total gallons of paint used = 45

So, 45 gallons of paint painted 280 sq ft.

⇒ By UNITARY METHOD,

1 gallon of paint paints $(\frac{280}{45} )$ sq ft

So, area painted by 1 gallon = 6.22 sq ft

⇒ area painted by 3 gallon = 6.22 sq ft x 3 = 18. 66 sq ft

So, they can paint 18. 66 sq ft with 3 gallons of paint.

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3 years ago

6. Find QR, if area and altitude PS of ∆PQR are given<br> ar(∆PQR) = 180 cm2, PS = 15

Slav-nsk [51]

Given:

Area and altitude PS of ∆PQR are ar(∆PQR) = 180cm² and PS = 15.

To find:

The measure of side QR.

Solution:

According to the given information, PS is an altitude of ∆PQR. It means QR is the base of ∆PQR.

We know that, the area of a triangle is

$Area=\dfrac{1}{2}\times Base\times Height$

$ar(\Delta PQR)=\dfrac{1}{2}\times QR\times PS$

Substituting the given values, we get

$180=\dfrac{1}{2}\times QR\times 15$

$180\times 2=QR\times 15$

$360=QR\times 15$

Divide both sides by 15.

$\dfrac{360}{15}=QR$

$24=QR$

Therefore, the measure of side QR is 24 cm.

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2 years ago

The middle school is 2.72 kilometers from Marsha's house and 1.54 kilometers from Ryan's house. How much farther does Marsha liv

TEA [102]

1.18km is the answer

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3 years ago

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