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vichka [17]
3 years ago
8

C(x)=15.00+0.20x= how to solve

Mathematics
1 answer:
Artist 52 [7]3 years ago
3 0

Answer:

x = -75

Step-by-step explanation:

15.00 + 0.20x = 0

<u>Step 1:  Subtract 15 from both sides</u>

15 + 0.2x - 15 = 0 - 15

0.2x / 0.2 = -15 / 0.2

x = -75

Answer:  x = -75

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64+16x^2-72x+81=289 I don’t understand
7nadin3 [17]

Answer:

x = 6 or x = -3/2

Step-by-step explanation:

Solve for x:

16 x^2 - 72 x + 145 = 289

Hint: | Write the quadratic equation in standard form.

Divide both sides by 16:

x^2 - (9 x)/2 + 145/16 = 289/16

Hint: | Solve the quadratic equation by completing the square.

Subtract 145/16 from both sides:

x^2 - (9 x)/2 = 9

Hint: | Take one half of the coefficient of x and square it, then add it to both sides.

Add 81/16 to both sides:

x^2 - (9 x)/2 + 81/16 = 225/16

Hint: | Factor the left hand side.

Write the left hand side as a square:

(x - 9/4)^2 = 225/16

Hint: | Eliminate the exponent on the left hand side.

Take the square root of both sides:

x - 9/4 = 15/4 or x - 9/4 = -15/4

Hint: | Look at the first equation: Solve for x.

Add 9/4 to both sides:

x = 6 or x - 9/4 = -15/4

Hint: | Look at the second equation: Solve for x.

Add 9/4 to both sides:

Answer:  x = 6 or x = -3/2

7 0
3 years ago
Please help me!! this is a quiz and i have 10 minutes!!
Nookie1986 [14]

Answer:

When y = 1/2, the answer would be 0. When y = -4, the answer would be 9. When y = 0, the answer would be 1.

Step-by-step explanation:

3 0
3 years ago
Find the missing length of the triangle. *
stepladder [879]

Answer:

84mm

Step-by-step explanation:

51+45=96

1 right angle

scalene triangle

180-96=84

6 0
3 years ago
Find x and y please??
QveST [7]
Y = 17/sin(30°) = 17/(1/2) = 34

x = y*cos(30°) = 34 * (√3)/2 = 17√3
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3 years ago
Put the following equation of a line into slope-intercept form, simplifying all
alina1380 [7]
Answer : y= -3x-2 Hope this helped!
7 0
3 years ago
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