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SSSSS [86.1K]
3 years ago
10

How do I solve for r

Mathematics
2 answers:
White raven [17]3 years ago
3 0
To solve for R you use PEMDAS
Ksju [112]3 years ago
3 0
4 (r-10)^2+2=38
expand 4 [(r-10)(r-10)]+2=38
solve r-10×r-10
4 (r^2-20r+100)+2=38
-2 both sides
4 (r^2-20r+100)=36
÷4 both sides
r^2-20r+100=9
-9 both sides
r^2-20r+91=0
(r-7)(r-13)=0
r=7,13



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KengaRu [80]

a) Since the corresponding y-value is -0.6, hence the point (-0.8, -0.6) is a solution to the system of  equations

b) since  the corresponding x-value is not 1/3, hence the point (1/3, 2) is not a solution to the system of  equation

In order to show if the given point corresponds to the given function, we will have to substitute the value of x into the function to see if we will have its corresponding y-value

For the point (-0.8, -0.6), substitute x = -0.8 into both functions as shown:

f(x)  = 2x + 1

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Simiarly;

y = -3(-0.8)- 3

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Since the corresponding y-value is -0.6, hence the point (-0.8, -0.6) is a solution to the system of  equations

For the point (1/3, 2), substitute x = 1/3 into both functions as shown:

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Learn more on systems of equation here: brainly.com/question/847634

5 0
2 years ago
Factor: 64v^4 - 225w^10
love history [14]

Answer:

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Step-by-step explanation:

STEP 1:

8^{2}v^{2*2} - 15^{2}w^{2*5}

STEP 2:

8^{2} * (v^{2})^{2} - 15^{2} * (w^{5})^{2}

STEP 3:

(8v^2)^2 - (15w^5)^2

STEP 4:

(8v^2-15w^5)(8v^2+15w^5)

6 0
3 years ago
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