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wel
4 years ago
12

Need help please help

Mathematics
1 answer:
Art [367]4 years ago
8 0

Answer:

Step-by-step explanation:

\frac{\sqrt{72}-21 }{27} =\frac{6\sqrt{2} -21}{27} =\frac{2\sqrt{2}-7 }{9}

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B+7 ÷ 2a for a = -4 b= -6
Evgen [1.6K]

-6+7 / 2(-4)=

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3 years ago
MIDDLE SCHOOL MATH- 4 QUESTIONS
Contact [7]

Answer:

( I am assuming that these are all fractions)

1. 14 \frac{4}{7}

2.  8

3. \frac{4}{15}

4. 5 \frac{8}{11}

Step-by-step explanation:

1. First you have to convert 15 into a fraction but it must have the same denominator causing the equation to look like 105/7 - 3/7= 102/7. But you cannot just leave the fraction like that it must be simplified 14 \frac{4}{7}

2. Three-fifths of an hour is 36 minutes. You would next multiply 5 by 60 which would the hours into minutes 5 x 60 = 300. You would then divide 300 by 36 which would give you 8.3333333333, which I just simplified it to 8

3. In order for you to multiply a fraction you would first multiply the top then the bottom. 12 x 6= 72, 15 x 18= 270. The fraction would look like 72/270 which is simplified to \frac{4}{15} .

4. First I changed the fractions into improper fractions causing the fraction to look like 36/8 x 14/11 (I got these answers by 8 by 4 then adding 4, then for the next fraction I multiplied 11 by 1 then added 3.) 36 x 14= 1224, 11 x 8= 88 the fraction would look like 1,224/88 you would simplify to 5 \frac{8}{11}

Hope this helps

Please tell me if I made any mistakes I enjoy learning from them.

6 0
3 years ago
Which set of ordered pairs represents a linear function?
kifflom [539]

Answer:its d

Step-by-step explanation:

3 0
4 years ago
Simplify Please <br> -2a +a + 7 - 5
Eduardwww [97]

Answer:

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Step-by-step explanation:

-2a+a+7-5

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6 0
3 years ago
Read 2 more answers
Please help you have to find the sides and stuff help plssss
oksano4ka [1.4K]

Answer:

A) The side is 14 cm

B) The total distance around the whoole board is 56 cm

Step-by-step explanation:

So we know its a square.

A square is all equal sides

We got the area which is 196

So we know area of a square is L*W or S^2

And since all sides are equal we can square root 196

That would give you 14

So we know each side is 14

Part B is just perimeter, there are 4 equal sides so we can just multiply 14*4 which is 56.

CHECK:

So we want to check the sides are equal

Each side is 14

and area is 196

14*14=196

So its true

5 0
3 years ago
Read 2 more answers
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