-r + 6 +8r -14
Simplify the expressions by combining like terms?

Answers

Answer 1
Answer:
                                 -r  +  6  +  8r  -  14

Add up all the 'r's:    -r + 8r  =  7r

Add up all of the
just-plain-numbers:      + 6 - 14  =   - 8

The whole messy complicated expression is the same as        7r - 8      .

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Estimate the quotient of 72+ 5.8. A 9 B 1 1 C 12 D 14

Answers

well your dividing so it would be 12 i got 72/5.8=12.41..that 4 behind it means that it stays 12
The answer is C if u divide u get 12.41 so if u look to the right u see it is 4 so u just put 0 is it's 5 or more than u make it 13 so the answer is 12

Do all triangles have right angles? Explain.

Answers

No, because some angles are obtuse or acute....
Some are not because some are 180 degrees

4.2475 rounded to the nearest ten or hundred

Answers

Nearest tenth - 4.2
Nearest hundredth- 4.25
Nearest tenth = 4.2
Nearest hundredth = 4.25

Casey and her two friends made $54 selling lemonade in their neighborhood. They will share their money equally. How much money will each friend get? Show your work and explain the answer

Answers

To find out how much money Casey and her two friends will each get, we simply need to divide the total amount of income by the amount of people receiving a part of it

54 / 3 = 18

Casey and her two friends each got $18 from their lemonade stand.
Hope that helped! =)

How many cups are in a gallon

Answers

1 cup: 8 oz
1 pint: 2 cups
2 pints: 1 quart
4 quarts: 1 gallon
by looking at this scale you will multiply the needed #s:
2 times 2 = 4    4 times 4 = 16 so there are 16 cups in a gallon 
the answer to this question is: 16 us customary cups.
Hope this helps! (:

Can a cross-section be a sphere?

Answers

Answer:

Spheres are NOT polyhedra. The intersection of a plane with a sphere is a circle (or a point if tangent to sphere). All cross sections of a sphere are circles. (All circles are similar to one another.)

Hope this helps??

no because spheres are not polyhedra