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4 years ago

If 5 mi=8km, about how many miles would be equal to 50 km? explain

1 answer:

8 0

If 5 miles is the same as 8 kilometers, 50 kilometers would be the same as 31.25 miles. This is because the unit rate of 5 miles: 8 kilometers is 0.<span>625:1. This then allows us to multiply by 50 over 50 to get us 31.25 miles: 50 kilometers.</span>

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If we convert 0.14 x10^3 to scientific notation, which direction should the

podryga [215]

Answer:

Move it to the right by 3 spaces.

Step-by-step explanation:

10^3 is 1000

On a number line the negative numbers are on the left and the positive numbers are on the right. So since the exponent is a positive 3 we move it to the right by 3 spaces to get 140

4 0

3 years ago

8× what =2

sergejj [24]

Answer:

8*1/4= 2

A) 0.071

B) 0.48

5 0

3 years ago

Are ratios 8:16 and 1:2 equal? Why?

PolarNik [594]

Because 8/8=1 and 16/8= 2

3 0

3 years ago

Read 2 more answers

Which of the following expression expressions is equivalent to cos3x/sinxcosx?

77julia77 [94]

Correct Option:
Option B

Solution:
The given expression is:

$\frac{cos(3x)}{sin(x)cos(x)}$

cos(3x) can be written as cos(2x +x). Expanding it, we get:

$cos(3x) = cos(2x+x) \\ \\ 
cos(3x) =cos(2x)sin(x)-sin(2x)cos(x)$

Using this value of cos(3x) in given equation, we get:

$\frac{cos(3x)}{sin(x)cos(x)} \\ \\ 
= \frac{cos(2x)sin(x)-sin(2x)cos(x)}{sin(x)cos(x)} \\ \\ 
= \frac{cos(2x)sin(x)}{sin(x)cos(x)}- \frac{sin(2x)cos(x)}{sin(x)cos(x)} \\ \\ 
= \frac{cos(2x)}{cos(x)} - \frac{sin(2x)}{sin(x)} \\ \\ 
=sec(x)cos(2x)-csc(x)sin(2x)$

8 0

3 years ago

Read 2 more answers

(-6time + 3) + (5time -4)

svet-max [94.6K]

Answer:

- 38

Step-by-step explanation:

Here in this question, we have to simplify a certain numeric term to get a simple answer.

The expression is ( - 6 times + 3 ) + ( 5 times - 4 )

= - ( 6 times 3 ) + (5 times - 4)

= - ( 6 × 3 ) - ( 5 × 4 )

= - 18 - 20

= - 38 (Answer)

3 0

3 years ago