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Blizzard [7]
3 years ago
8

a group of friends are riding bicycles. She takes 4 hours to ride 25.6 kilometers whats there speed?

Mathematics
1 answer:
Dvinal [7]3 years ago
5 0

Answer:

6.4 Kilometers Per Hour

Step-by-step explanation:

To find how many kilometers per hour divide the kilometers traveled by the amount of hours they have rode.

25.6/4=6.4

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An auto weighing 2,500 pounds is on a street inclined at 10 with the horizontal. Find the force necessary to prevent the car fro
Misha Larkins [42]

Answer:

1931.7N

Step-by-step explanation:

We are told in the question that :

An auto ( a car) weighs = 2500 pounds

It s inclined at n horizontal Ange of 10°

We are asked to find the force that would prevents it from rolling down the street.

Since the unit for Force = Newton or kgm/s²

Step 1

Convert Weight in pounds to kg

1 pound = 0.453592kg

2500 pounds =

2500 pounds × 0.453592kg

= 1133.981kg

Step 2

Find the force that would prevents it from rolling down the street.

Force = Mass × Acceleration due to gravity × sin θ

Acceleration due to gravity = 9.81m/s

Force = 1133.981kg × 9.81 × sin 10°

Force = 1931.7237321 N

Approximately = 1931.7N

4 0
3 years ago
If 180°<θ<270°, and sin⁡θ=−3/4, what is the value of sin(−θ)?
Oxana [17]

Answer:

sin(-\theta)=\frac{3}{4}

Step-by-step explanation:

Given:

180°<θ<270° and sin(\theta)=-\frac{3}{4}

We know for any angle \theta,

sin(-\theta)=-sin(\theta)

∴sin(-\theta)=-(-\frac{3}{4})=\frac{3}{4}

5 0
3 years ago
What is the area of the triangle? 24,25,7<br>Pls pls helpp!!!!
Ksju [112]

Answer:

84

Step-by-step explanation:

A= 1/2• bh

A= 1/2•24(7)

3 0
3 years ago
Read 2 more answers
whole milk is 4% butterfat how much skim milk with 0% butterfat should be added to 32 ounces of whole milk to obtain a mixture t
vivado [14]

Answer:

whole milk 4 ---------------- 32 ounces

skim milk 0 ---------------- x ounces

Mixture 2.5 ---------------- 32 + x ounces

 

4*32+0x =2.5(32 +x)

128+0x= 80+2.5 x

0 x + -2.5 x = 80 - -128

-2.5 x = -48

/ -2.5

x = 19.2

19.2 ounces of 0 % fat skim milk

4 0
3 years ago
Gary used candle molds, as shown, to make candles that were perfect cylinders and spheres:What is the approximate difference in
Nikolay [14]
The correct answer is 16.7

Hope this helped :)
6 0
3 years ago
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