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crimeas [40]
3 years ago
14

What is the average rate of change from x = 10 to x = 15?

Mathematics
1 answer:
FrozenT [24]3 years ago
7 0

Answer:  I'm guessing -2 1/5

Step-by-step explanation:  It's difficult to know the number at x = 15, but I would guess 9 might be the closest.  The change is -11/5, or -2 1/5.

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What are the GCF of 18 and 20
Fittoniya [83]

Answer:

The greatest common factor (GCF) of 18 and 20 is 2.

Step-by-step explanation:

To solve this problem, first, you have to find the greatest common factor of 18 and 20.

Factors of 18:

1, 2, 3, 6, 9, and 18.

Factors of 20:

1, 2, 4, 5, 10, and 20.

So, the greatest common factor (GCF) of 18 and 20 is 2.

4 0
3 years ago
Is the expression 6+3=9 an equation? Explain.
Tanzania [10]
Answer: Yes

Explanation: a statement that the values of two mathematical expressions are equal (indicated by the sign =).

Two values (6 and 3) are being brought together for another value represented by the = symbol making this an equation
5 0
3 years ago
Read 2 more answers
What are the coordinates of the center and the
Misha Larkins [42]

Answer: The coordinate of the center is (4,-3)

radius = 8

Step-by-step explanation:

Given ;

x^{2} +y^{2}=8x-6y+39

re - arranging , we have

x^{2} +y^{2}-8x+6y-39=0

comparing with the general equation

x^{2} +y^{2}+2gx+2fy+c=0

This means that

2gx = -8x

2g=-8

g=-4

also

2fy=6y

2f=6

f=3

c=-39

The coordinate of the center is (-g,-f)

Therefore;

the coordinate of the center = (4,-3)

the formula for calculating r is given by:

r = \sqrt{g^{2}+f^{2}-c}

r = \sqrt{16+9+39}

r=\sqrt{64}

r=8

METHOD 2

x^{2} +y^{2}-8x+6y-39=0

using completing the square method , we have

x^{2} -8x+y^{2}+6y-39=0

completing the square , we have

(x-4)^{2}+(y+3)^{2} = 39 +4^{2}+3^{2}

(x-4)^{2}+(y+3)^{2}=64

comparing with the general equation

(x-a)^{2}+(y-b)^{2}=r^{2}

where a and b are the coordinate of the center , that is

the coordinate of the center is ( 4 , -3)

r^{2}=64

r=8

6 0
3 years ago
What decimal is greater 0.732 or 0.75
BARSIC [14]
0.732
0.750

If you have trouble with decimals, then multiply both numbers by a constant number to get rid of the decimals. In this case, we would multiply by 1000.

0.732 x 1000 = 732
0.750 x 1000 = 750

Obviously, 750 is bigger than 732. Therefore, 0.75 is bigger than 7.32.

By the way, this is a property: 
If a \ \textgreater \  b, then a \cdot c ~\ \textgreater \ ~ b\cdot c
5 0
3 years ago
Read 2 more answers
Marco needs $57 to buy new basketball shoes. If Marco earns $3 per day working and already has $12 saved, which equation shows h
Marina86 [1]

Answer:

3x+12=57

x= how many days

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
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