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nadezda [96]
4 years ago
13

The difference of a and b is?

Mathematics
1 answer:
Yakvenalex [24]4 years ago
8 0
A-b
difference means subtract
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What is the value of y in the solution to the system of equations?
Svetllana [295]
You can start by multiplying the first equation by twelve, by doing this you get whole numbers. This yields:
4x + 3y =12
2x - 3y = -30
As you can see, you have two terms that only differ in sign.
By adding both equations together you get this:
6x=-18 or x=-3
The reason why you can add these equations together is illustrated in the next example:
4=x
5=y
4+5=x+y
Simple no?
Now that you now x you can substitute the value in one of the equations and you get the y value:
4*-3 + 3y =12
-12 + 3y =12
3y= 24
y=8
6 0
4 years ago
What is the radius of a circle with circumference 22 m?
Veseljchak [2.6K]

Answer:

3.5 cm

Step-by-step explanation:

Using the formula

c=2πr

r =C/2π = 22/2×π ≈ 3.50141cm

6 0
4 years ago
Read 2 more answers
The sequence below represents Marisa’s fine at the library for each day that she has an overdue book: $0.50, $0.65, $0.80, $0.95
podryga [215]

Answer:

<h2>f(n) = 0.15n + 0.35</h2>

Step-by-step explanation:

The sequence of the problem above is an arithmetic sequence

For an nth term in an arithmetic sequence

F(n) = a + ( n - 1)d

where a is the first term

n is the number of terms

d is the common difference

To find the equation first find the common difference

0.65 - 0.5 = 0.15 or 0.80 - 0.65 = 0.15

The first term is 0.5

Substitute the values into the above formula

That's

f(n) = 0.5 + (n - 1)0.15

f(n) = 0.5 + 0.15n - 0.15

The final answer is

<h3>f(n) = 0.15n + 0.35</h3>

Hope this helps you

4 0
4 years ago
Read 2 more answers
Adult red wolves vary in length from 137.16 cm to 168.64 cm. Estimate the difference in length between the longest and shortest
Gennadij [26K]
Add the two together and divide the answer by 137.16 add it together
8 0
3 years ago
Which best describes how to find an equation of the line shown?
allochka39001 [22]

Answer:

C

Step-by-step explanation:

slope = rise/run

slope = y/x

6 0
3 years ago
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