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Leona [35]
3 years ago
15

What is the product? (2x - 1)(x+4) 2x?-4 2x+4 2x+7-4 2x? - 7x-4

Mathematics
1 answer:
damaskus [11]3 years ago
5 0
The answer is :

2x^2 + 7x - 4
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What are the center and radius of the circle given by the equation ?
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General formula of the circle

(x-a)² + (y - b)² = r²,


where (a,b) - coordinates of the center, r - radius of the circle.


(x-3)²+(y+4)²=4

(x-3)²+(y+4)²=2²


So, the center is (3, -4) and radius r = 2.


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3 years ago
The wall below is 90% covered with graffiti. The entire wall is 228 ft2. How much square footage does the graffiti cover?
Rama09 [41]
205.2 square feet

Convert 90% to a decimal. You get .9 Multiply 228 by .9 to find what 90% of 228 is. You should get 205.2.
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3 years ago
To convert meters per minute to kilometers per hour, which of the conversion facorts would be used?
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Divide by 1000 to convert to kilometers per minute

Then multiply by 60 to convert to kilometers per hour.

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3 years ago
Angle pwm is equal to angle pkm
Len [333]
<h3>Answer: 24 (choice C)</h3>

Assuming M is a midpoint of KW, this means that WM and KM are congruent

WM = KM

x+3 = 2(x-3) ... substitution

x+3 = 2x-6

2x-6 = x+3

2x-6-x = x+3-x .... subtract x from both sides

x-6 = 3

x-6+6 = 3+6 ... add 6 to both sides

x = 9

Use x = 9 to find the length of WM

WM = x+3 = 9+3 = 12

Which can be used to find the length of KM as well

KM = 2(x-3) = 2(9-3) = 2(6) = 12

both lengths are the same (12) as expected

This makes WK to be

WK = WM + KM

WK = 12 + 12

WK = 24

3 0
3 years ago
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Step-by-step explanation:

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