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Tresset [83]
4 years ago
8

PLEASE HELP. Simplifying question

Mathematics
1 answer:
aliina [53]4 years ago
6 0

Answer:

The final answer is-925x+3

Step-by-step explanation:

The problem to solve is:

3-5x10-7x125

Multiply x and 5

Multiply x and 1

The x just gets copied along.

The answer is x

x

5*x evaluates to 5x

Multiply 10 and 5x

Multiply 1 and x

The x just gets copied along.

x

5*x*10 evaluates to 50x

3-5*x*10 evaluates to 3-50x

Multiply x and 7

Multiply x and 1

The x just gets copied along.

The answer is x

x

7*x evaluates to 7x

Multiply 125 and 7x

Multiplying 1 and x

The x just gets copied along.

x

7*x*125 evaluates to 875x

-50x - 875x = -925x

The answer is -925x+3

3-5*x*10-7*x*125 evaluates to -925x+3

The final answer is-925x+3

_______________________________________

The problem to solve is:

15-5x6-7

Multiply x and 5

Multiply x and 1

The x just gets copied along.

The answer is x

x

5*x evaluates to 5x

Multiply 6 and 5x

Multiply 1 and x

The x just gets copied along.

x

5*x*6 evaluates to 30x

15-5*x*6 evaluates to 15-30x

15 - 7 = 8

The answer is 8-30x

15-5*x*6-7 evaluates to 8-30x

The final answer is8-30x

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7 0
3 years ago
Which of the following circles have their centers in the second quadrant? Check all that apply.
ivann1987 [24]
The given circles are given in standard form:
(x - xc)² + (y - yc)² = r²

The second quadrant is the one that has negative x coordinates and positive y coordinates.

This said, let's see all your options:
A) (x - 5)² + (y - 6)² = 25
xc = -(-5) = +5
yc = -(-6) = +6
C (5 , 6) is in the first quadrant.

B) (x + 1)² + (y - 7)² = 16
xc = -(+1) = -1
yc = -(-7) = +7
C (-1 , 7) is in the second quadrant.

C) (x - 4)² + (y + 3)² = 32
xc = -(-4) = +4
yc = -(+3) = -3
C (4, -3) is in the fourth quadrant.

<span> D) (x + 2)² + (y - 5)²= 9</span>
xc = -(+2) = -2
yc = -(-5) = +5
C (-2 , +5) is in the second quadrant.

Therefore, the correct answers are B and D.
7 0
4 years ago
The net below has dimensions l = 14 feet, w = 7 feet, and h = 13 feet. How will the surface area of the figure change if the wid
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3 0
3 years ago
Match the y-coordinates with their corresponding pairs of x-coordinates on the unit circle. the x coordinates to choose from are
vaieri [72.5K]
Of the four x-coordinates to choose only 1/√(11) belongs can belong to the unit circle.

The other three x-coordinates are greater than 1, then they are out of the unit circle.

The unit circle formula is x^2 +y^2 = 1

Then to find the y-coordinate given the x-coordinate you can solve for y from that formula:

y^2 = 1 - x^2

y = (+/-)√(1-x^2)

Substitute the value of x

y = (+/-)√{1 - [1/√(11)]^2} = (+/-) √{(1 - 1/11} =(+/-) √ {(11 -1)/11 =(+/-)√(10/11) ≈ +/- 0.95


6 0
3 years ago
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