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horrorfan [7]
2 years ago
10

9/x + 2 = 20 WAHT IN THE WORLD? HOWWWW?!

Mathematics
1 answer:
34kurt2 years ago
5 0

Answer:

1/2 =x

Step-by-step explanation:

9/x + 2 = 20

Subtract 2 from each side

9/x + 2-2 = 20-2

9/x =18

Multiply each side by x

9/x *x = 18*x

9 = 18x

Divide each side by 18

9/18 = 18x/18

1/2 =x

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Find the average rate of change of the function between the given values of x. y = 9+ 5x + 0.5x2 between x = 2 and x = 4.
svet-max [94.6K]

Answer:

The average rate of change is 8.

Step-by-step explanation:

The formula to calculate the average rate of change of a function F(x) is:

\frac{F(b)-F(a)}{b-a}

In this case, F(x) = 0.5x^{2} +5x+9

a=2 and b=4

You have to evaluate x=2 (which is a in the formula) and x=4 (which is b in the formula) in the function.

In order to obtain F(b) and F(a) you have to replace x=4 and x=2 in the given function:

F(b) = (0.5)4^{2} + 5(4) +9= 37

F(a) = (0.5)2^{2} + 5(2)+9=21

\frac{F(b)-F(a)}{b-a} = \frac{37-21}{4-2}=\frac{16}{2} = 8

The answer is 8.

3 0
2 years ago
What is the side length? Please help, thanks
azamat

Answer:

if Area = 169/225

then

S = √(169/225)

S = √169/√225

S = 13/15

5 0
3 years ago
X≥1 x≤7 y≥-1/3x+6
Goshia [24]

Answer:

Step-by-step explanation:

i am unsure of what you actually need, but i want to help you.

if you were to set the boundaries of the feasibility region it would be as follows:

as points

A(1, 17/3)   B(7, 11/3)   C(7, infinity)   D(1, infinity)

as graphs

y=-1/3x+6 where 1≤x≤7

x=1

x=7

7 0
3 years ago
Read 2 more answers
a triangle has side lengths of 13, 15, and 17. determine whether the triangle is right, acute, or obtuse.
Len [333]
Square of longest side = 17^2 =  289

15^2 = 225
13^2 = 169 

total 394      289 is less than this so its acute
3 0
3 years ago
40.32 is 76.8% of what number?
julsineya [31]
Hey there

Lets solve this question together, 

Convert <span>76.8%</span><span> to a decimal.
</span>
0.768 * x=40.32 

Multiply 0.768<span> by </span>x<span> to get </span><span>0.768x</span><span>. 
</span>
&#10;0.768x=40.32 

Multiply<span> each </span>term<span> by </span><span>1 / 0.768</span><span> and simplify.
</span>
Cancel the common factor of 0.768.

x=40.32 / 0.768 

Divide 40.32<span> by </span>0.768<span> to get </span><span>52.5 

</span>x=52.5 <span>
</span>
6 0
3 years ago
Read 2 more answers
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