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Luda [366]
2 years ago
14

Use y=2.5x+65 to find y when x=8 show work

Mathematics
2 answers:
harkovskaia [24]2 years ago
8 0

Answer: y=85

Step-by-step explanation: Substitute all x's in the equation with 8. y=2.5(8)+65. And solve y=85

blagie [28]2 years ago
3 0

Answer:

y = 85

Step-by-step explanation:

We would replace 'x' with 8 and then solve for 'y'.

=================================

y = 2.5x + 65; x = 8\\\rule{150}{0.5}\\y = 2.5(8) + 65\\\\y = 20 + 65\\\\\boxed{y = 85}

=================================

Hope this helps you.

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DedPeter [7]
A is the correct answer.
8 0
3 years ago
What is the value of 2 StartRoot 6 + p EndRoot minus 3 p cubed when p = negative 2 -32 -16 32 56
dmitriy555 [2]

Answer:

C

Step-by-step explanation:

2|6+p|-3p³,

when p=-2

2|6+p|-3p³=2|6-2|-3(-2)³

=2(4)-3(-8)

=8+24

=32

3 0
3 years ago
Find the exact value of cos(arcsin(1/4)). For full credit, explain your reasoning.
Westkost [7]
First way
arcsin(1/4) means that 1/4 sin of the angle.

sin(α)=1/4
sin²α+cos²α=1
(1/4)²+cos²α=1
cos²α=1-1/16 =15/16
cosα=+/-(√15)/4

<span>Second way
</span>
sin(α)=1/4 =opposite leg/hipotenuse
cos(α)=adjacent leg/hypothenuse
adjacent leg =√(hypotenuse²- Opposite²)=√(16-1)=√15
cosα=+/-√15/4

For one value of sinα, possible 2 values of cosα.

5 0
3 years ago
a person made 4 blankets each blanket used 180 inches of ribbon for the border how many yards of ribbon did the person use for a
adell [148]

Answer:


Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
The quotient of 9.2 x 10 6 and 2.3 x 10 2 expressed in scientific notation is
Virty [35]
What we know:
quotient 9.2 x 10^6/ 2.3 x 10²
in quotients exponents are subtracted of they have the same base, for example 10^6 and 10² have the same base of 10

What we need to find: quotient 9.2 x 10^6/ 2.3 x 10²
9.2 x 10^6        
--------------  =    4 x 10^4    
 2.3 x 10²

Here in this problem I divided 9.2 by 2.3 and got 4, since the solution was simple and clean meaning no repeated decimals I went ahead and divided the 10^6 by 10^2 and got 10^4.


Another method would be to expand both numbers then divide and do scientific notation again.
Remember to change to normal notation you move the decimal to the right using the number of the exponent.

9.2 x 10^6= 9200000
2.3 x 10²= 230

920000/230=40000

40000= 4 x 10^4 scientific notation

Use the method that is best for you or just know you can use either method to check your work.

4 0
3 years ago
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