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3 years ago

I need help on this

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

7 0

Multiply -2m with 8/8 to get -16/8 and then combine that with 7/8m. and then multiply -3/5 with 2/2 to get -6/10 and combine that with 9/10. so you should get -9/8m+3/10

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horrorfan [7]

Answer:

Step-by-step explanation:

add all the numbers then divide by how many numbers there are.

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3 years ago

Beth did a walk for charity and earned $24 for every 2 1/2 miles she walked. what is the unit rate?

Pani-rosa [81]

The unit rate would be how much she earns per hour.
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4 years ago

A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it.

Nina [5.8K]

Answer:

10 days to complete

Step-by-step explanation:

for mixed rate problems, the sum of each individual reciprocal rates equals the sum of the combined rate

i.e

$\frac{1}{A's rate} + \frac{1}{B's Rate} = \frac{1}{combined rate}$

we are given,

A's rate = 15 days to complete

Combined rate = 6 days to complete

B's rate = need to find

substituting' the given info into the equation above,

1/15 + 1/ (B's Rate) = 1/6

1 / (B's Rate) = 1/6 - 1/15 (convert right side to same denominator)

1 / (B's Rate) = 5/30 - 2/30

1 / (B's Rate) = 3/30

1 / (B's Rate) = 1/10 (taking reciprocal of both sides)

B's rate = 10 days to complete

4 0

4 years ago

Read 2 more answers

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Karolina [17]

Answer:

(D)A right triangle with acute angles measuring 45° and 45°

Step-by-step explanation:

The triangles created by the measurements in Options A, B and C have specified lengths of the sides. Therefore, not more than one triangle can be created.

However, for a triangle with acute angles measuring 45° and 45°, an uncountable number of similar triangles (triangles with same shape but different sizes) can be created.

<u>The correct option is D.</u>

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3 years ago

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Natasha2012 [34]

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Answer:

13 cups

4 0

3 years ago

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