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3 years ago

Beth and Amy are trading marbles. Beth has three times more marbles than her sister, Amy.

Mathematics

1 answer:

dusya [7]3 years ago

8 0

Answer:

The answer is c which is 7.

Step-by-step explanation:

3 times so,

21 / 3 = 7

Hopes this helps.

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Greg has a piece of string that is 3 1/3 yards long. If he cuts off 3/4 yard, how many yards of the string

lozanna [386]

2(7/12) yards will be left

3(1/3) =10/3
10/3 - 3/4. = 40/12- 9/12
= 31/12
=. 2(7/12)

8 0

1 year ago

× + 20 + 2× = 10 - 2× - 15

OlgaM077 [116]

Answer:

The answer is -5

Step-by-step explanation:

$\mathrm{Group\:like\:terms}\\x+2x+20=10-2x-15$

$\mathrm{Add\:similar\:elements:}\:x+2x=3x\\3x+20=10-2x-15$

$\mathrm{Group\:like\:terms}\\3x+20=-2x+10-15$

$\mathrm{Add/Subtract\:the\:numbers:}\:10-15=-5\\3x+20=-2x-5$

$\mathrm{Subtract\:}20\mathrm{\:from\:both\:sides}\\3x+20-20=-2x-5-20$

$\mathrm{Simplify}\\3x=-2x-25$

$\mathrm{Add\:}2x\mathrm{\:to\:both\:sides}\\3x+2x=-2x-25+2x$

$\mathrm{Simplify}\\5x=-25$

$\mathrm{Divide\:both\:sides\:by\:}5\\\frac{5x}{5}=\frac{-25}{5}$

$\mathrm{Simplify}\\x=-5$

Hope this helps you greatly!

Have a great afternoon!

6 0

2 years ago

If two polygons are similar then the corresponding sides must be?

Maslowich

Answer:

Two polygons are similar if their corresponding angles are congruent and the corresponding sides have a constant ratio (in other words, if they are proportional).

Step-by-step explanation:

(plz like and follow if this helps:)

4 0

2 years ago

Read 2 more answers

What is $699.99 in percent?

Otrada [13]

To convert a decimal to percent, multiply by 100.

699.99 × 100 = <span>69999 %</span>

4 0

2 years ago

Help me with both or just one

nexus9112 [7]

Im pretty sure the first one would be 16 dollars

7 0

2 years ago

Read 2 more answers