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3 years ago

Find the difference 15 - (-15)

Mathematics

1 answer:

Yuki888 [10]3 years ago

8 0

Answer:

Step-by-step explanation:

Note that, when two negative signs are directly next to each other, they mean addition. Note the rule:

A positive sign & A positive sign = Positive number.

A positive sign & A negative sign = Negative number.

A negative sign & A negative sign = Positive number.

In this case:

- (-15) = + 15

Simplify. Combine like terms:

15 + 15 = 30

30 is your answer.

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The answer to this is 10 39/88.

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3 years ago

Question Help

lorasvet [3.4K]

Answer:

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

Upstream speed = s-4

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.

So, Distance traveled in upstream = $Speed \times time =(s-4) \times \frac{30}{60}$

Downstream speed = s+4

So, Distance traveled in downstream = $Speed \times time =(s+4) \times \frac{20}{60}$

So, $(s-4) \times \frac{30}{60}=(s+4) \times \frac{20}{60}$

30s-120=20s+80

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Hence The speed of the boat is 20 km/hr

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3 years ago

If you could put wings on any species of animal, what animal would you choose?

denis-greek [22]

Answer:

Humans

Explanation:

So I can have wings :)

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2 years ago

Read 2 more answers

∠Q and ∠R are complementary. If m∠Q = 33.8°, what is m∠R ? m∠R = 146.2° m∠R = 33.8° m∠R = 123.8° m∠R = 56.2°

Brrunno [24]

Complementary angles add together to equal 90 degrees.

R = 90 - 33.8

R = 56.2 degrees.

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3 years ago

You have 5,814 feet of rope that you need to cut into 27-foot sections. How many sections of rope will you have?

natta225 [31]

5814/27 = 215.33

215 x 27 = 5805

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Answer is B 215 sections with 9 feet left over

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