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aniked [119]
3 years ago
10

How to add and subtract rational numbers

Mathematics
1 answer:
fenix001 [56]3 years ago
7 0
Before you add or subtract, the rational numbers should have the same bottom number(called a common denominator.)
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A person is skateboarding to their local skate shop to pick up some sick rims. They skate at 8 miles per hour. The store is 2.5
belka [17]

Answer: 0.3125 hours

Step-by-step explanation:

The formula for time taken to cover a distance is:

= Distance / Speed

Distance = 2.5 miles

Speed = 8 miles per  hour

Time taken = 2.5 / 8

= 0.3125 hours

In minutes this is:

= 0.3125 * 60 mins

= 19 mins approx

3 0
3 years ago
What is the measure of o
Helga [31]

Answer:

D

Step-by-step explanation:

We need the formula for arc length (in radians) to solve this problem. The formula is:

s=r \theta

Where

s is the arc length

r is the radius of the circle

\theta is the intercepted angle

In this diagram, we can see that  \theta  is beign intercepted by the big arc with measure 20 cm. So arc length, s, is 20

Also, if we look, we see that the radius is 5 cm, so r = 5

Now, we substitute into formula and find \theta:

s=r\theta\\20=5\theta\\\theta=\frac{20}{5}\\\theta=4

This is given in radians, so \theta is 4 radians

D is the correct answer choice.

6 0
3 years ago
Which statement compares the two numbers correctly? 0.799 ________ 0.8 a 0.799 > 0.8 b 0.799 = 0.8 c 0.799 < 0.8 d 0.8 &lt
Elden [556K]

Answer:

I would say B.

3 0
4 years ago
11% as a decimal=<br><br> 200% as a decimal=<br> 20.07% as a decimal<br> 198.4% as a decimal
Hitman42 [59]
To convert from a percentage to a decimal, move the decimal twice to the left

11% = 0.11
200% = 2.00
20.07% = 0.2007
198.4% = 1.984

Hope this helps!
8 0
4 years ago
Read 2 more answers
Find the value of 6+x when x = 15.
zzz [600]

Answer:

Step-by-step explanation:

Given the function f(x)=6+x

F(x) is dependent on x,

When x=1

f(x)=6+x

f(x)=6+1,

f(x)=7

When x=2

f(x)=6+x

f(x)=6+2

f(x)=8.

This will continue like this till we get to x=15

So when x=15

We will substitute x=15 into the function f(x)

f(x)=6+x

f(x)=6+15

f(x)=21

Then, the answer is 21.

8 0
3 years ago
Read 2 more answers
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