2 years ago

How to review math ? the thing you have been learned

Mathematics

1 answer:

Temka [501]2 years ago

5 0

I have no idea what you're talking about. Can you explain in detail plz?

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A car is traveling at a speed of 25 meters per second what is the cars speed in kilometers per hour how many kilometers will the

Likurg_2 [28]

Answer:

90 km/h
180 km

Step-by-step explanation:

There are 1000 m in 1 km, and 3600 s in 1 h, so the speed conversion is ...

$\dfrac{25\,m}{s}\cdot\dfrac{1\,km}{1000\,m}\cdot\dfrac{3600\,s}{1\,h}=\dfrac{90\,km}{h}$

The car's speed is 90 km/h.

In 2 hours, the car will travel ...

distance = speed · time = (90 km/h)(2 h) = 180 km

7 0

2 years ago

Rectangle A has length 3 and width 5. Rectangle B has length 12 and

galina1969 [7]

Answer:

Yes, the scale factor is 4.

Step-by-step explanation:

If you times the length, 3, and the width, 5, by 4, you'll get 12 as your length and 20 as your width.

7 0

2 years ago

Which of the following square root of -80

Marta_Voda [28]

You can factor -80 as

$-80 = (-1)\cdot 16 \cdot 5$

So, we have

$\sqrt{-80} = \sqrt{(-1)\cdot 16 \cdot 5}$

The square root of a product is the product of the square roots:

$\sqrt{-80} = \sqrt{(-1)}\sqrt{16}\sqrt{5}$

Since $i^2=-1$ and $4^2=16$ , we have

$\sqrt{-80} = 4i\sqrt{5}$

8 0

2 years ago

Can some please help me with the pic above

Sladkaya [172]

I don't know if this will help but the 2 on the right are not parallelograms there

"3d"

4 0

2 years ago

If mZCDB = 50°, what is mZEDG?<br> A. 35<br> B. 40°<br> C. 45°<br> D. 50°

Pie

The answer to this is a

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2 years ago

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