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Ronch [10]
3 years ago
12

The diameter of the moon is 2160 miles. A model has a scale of 1in and 150mi. What is the diameter of the model

Mathematics
1 answer:
kaheart [24]3 years ago
3 0
Let x = diameter

x=2160 x (1/150)
x=2160/150
x=14.4

Diameter of the model is 14.4.
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6 0
3 years ago
The intercepts of the line Y=-2x-21
alexgriva [62]

Answer:

-21

Step-by-step explanation:

GIven data

We are given the equation of a line as

Y=-2x-21

let us compare this with the general equation of a line

y=mx+c

from the comparison, we can see that the intercept is -21

Therefore, the intercept is -21

3 0
3 years ago
The length of a rectangle is 3 centimeters less than twice its width. If the perimeter of the rectangle is 18 centimeters. find
Ede4ka [16]

Answer:

  • equation: w +(2w -3) = 18/2
  • length = 5 cm
  • width = 4 cm

Step-by-step explanation:

Let w represent the width in cm. Then the length is 2w-3, 3 cm less than twice the width. The perimeter is twice the sum of these, so the sum of length and width is half the perimeter:

  w + (2w -3) = 18/2

  3w -3 = 9 . . . . collect terms

  3w = 12 . . . . add 3

  w = 4 . . . . divide by 3

  2w-3 = 2·4 -3 = 5 . . . . length

The equation is w + (2w -3) = 18/2; the length is 5; the width is 4.

4 0
3 years ago
The equation of a linear function in point-slope form is y – y1 = m(x – x1). Harold correctly wrote the equation y = 3(x – 7) us
xz_007 [3.2K]

For this case we must find the point that Harold used to arrive at the following equation:

y = 3 (x-7)

Starting from the fact that the equation of the point-slope form of a line is given by:

(y-y_ {1}) = m (x-x_ {1})

If we compare the standard equation with Harold's, we see that the slope of the line is m = 3.

In addition, it is observed that x_ {1} = 7and y_ {1} = 0.

Then, the correct option is: Harold used the point (7,0)

ANswer:

When Harold wrote his equation, the point was used (7,0).

8 0
3 years ago
Read 2 more answers
3x square + 4 x minus 15 is equals to zero ​
lisov135 [29]

Answer:

<em>x = 5/3 </em>or<em> x = -3</em>

Step-by-step explanation:

3x² + 4x - 15 = 0

Factor left side.

(3x - 5)(x + 3) = 0

Set factors equal to 0.

3x - 5 = 0

3x = 5

x = 5/3

x + 3 = 0

x = -3

7 0
3 years ago
Read 2 more answers
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