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Mathematics

1 answer:

Gnoma [55]3 years ago

3 0

Answer:

$9.92 (rounded off to nearest cent)

Step-by-step explanation:

Square of 7-inch radius pizza = $7^{2}$ = 49 inches

49 Inches = $6

Square of 9-inch radius pizza = $9^{2}$ = 81 inches

Given 49 Inches = $6

1 inch =$ $$(\frac{6}{49} \\)$

I will leave it as a fraction as it is not the final answer, rounding it off will result in a loss of accuracy.

81 Inches = $81* \frac{6}{49} \\$

= $9.92 (rounded off to nearest cent)

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Which expression is equivalent to 2 (a + 2 b) minus a minus 2 b?

algol [13]

Answer:

a+2b

Step-by-step explanation:

2(a+2b) -a-2b

2a+4b-a-2b

a+2b

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3 years ago

X intercept -7 y intercept -5

Fittoniya [83]

The x-intercept of a line is when the y coordinate is equal to 0. So, the x-intercept would be (0,-7).

The y-intercept of a line is when the x coordinate is equal to 0. So the y-intercept would be (-5,0).

To find the equation of a line, you need the slope and the y-intercept.
We already know the y intercept is -5. The equation for a line is:

Y=mx+b

m stands for slope
b stands for the y intercept.

To find the slope, use the equation-

y1-y2
--------
x1-x2

Another way to say that is the change in y over the change in x.

Plug in the the 2 coordinate points you know, which are (-7,0) and (0,-5).

0+5
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-7-0

5/-7.

The slope is 5/-7
The Y intercept is -5

The equation of the line is y= 5/-7x -5

The coordinate point for the x intercept is (-7,0)
The coordinate point for the y intercept is (0,-5)

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4 years ago

What is the value of x in the equation 3 / 2 (4x - 2) - 3x = 5 - (x + 2)? Please hurry.

OLga [1]

Answer:

Step-by-step explanation:

$\frac{3}{2} (4x - 2) - 3x = 5 - (x + 2)$