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alex41 [277]
3 years ago
7

Which of the given expressions results in 0 when evaluated at x = 5? A. 5x(x − 7) B. (x − 8)(x − 5) C. (x + 7)(x − 2) D. (x + 5)

(x − 8)
Mathematics
2 answers:
Luda [366]3 years ago
6 0
The answer is B. My reasoning is because x is equal to 5 and the expression in the first set of parenthesis equals (-3) and the expression in the second set of parenthesis equals (0). Now when you get those expressions simplified, you multiply them together. Making it equal to 0. I hope this helps you understand. Use PEMDAS if you can recall what that is from school.
SSSSS [86.1K]3 years ago
3 0

Answer:

B. (x - 8)(x - 5)

Step-by-step explanation:

If you plugged in x = 5 into the 2nd equation, you would see that you would be multiplying by 0, which would turn everything zero.

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In this case we are dealing with the pythagorean theorm involving right angled triangles. This theorm states that a^2 + b^2 = c^2 which means the square of the hypotenuse (side c, opposite the right angle) is equal to the square of the remaining two sides.

In this case we will say that a = 3963 miles which is the radius of the earth. c is equal to the radius of the earth plus the additional altitude of the space station which is 250 miles; therefore, c = 4213 miles. We must now solve for the value b which is equal to how far an astronaut can see to the horizon.

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8 0
3 years ago
3-2|x+4|+3=1 the answer for this​
blagie [28]

Answer:

x={-3/2,-13/2}

Step-by-step explanation:

3-2|x+4|+3=1

-2|x+4|+6=1

-2|x+4|=-5

|x+4|=5/2

x+4=5/2

x+4=-5/2

x=5/2-4

x=-3/2

x=-5/2-4

x=-13/2

7 0
2 years ago
-2 (x+5):4<br> Pliss es para hoy
liberstina [14]

I don't know how you want it solved but, I am giving u -2 I hope this helps

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A gray-scale digital camera with 1,000,000 pixels takes a picture (the picture is made of 1,000,000 parts and each part has a ce
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Question 1 - about half of what the white soldiers earned
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