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4 years ago

PLS HELP PLS HELP QUICK

Mathematics

1 answer:

Anastasy [175]4 years ago

6 0

Answer:

170

Step-by-step explanation:

Let the number of cell phones be x

2 : 3 = 68: x

Product of extremes = product of means

2 * x = 68 * 3

x = $\frac{68*3}{2}$

= 34 * 3

x = 102

Number of phones = 102 + 68 = 170

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a segment has endpoints at (1, -2) The midpoint is at (-4, -2). What are the cooordinates of the other endpoint?

vfiekz [6]

Answer:

coordinate of the other endpoint is (-9,-2)

Step-by-step explanation:

Given that a segment has endpoints at (1, -2). The midpoint is at (-4, -2).

Now we need to find about what are the coordinates of the other endpoint.

let the coordinates of other end points are (x,y)

Then mid point of (1,-2) and (x,y) is given by mid point formula:

$\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)$

$\left(\frac{x+1}{2},\frac{y-2}{2}\right)=(-4,-2)$

$\Rightarrow \frac{x+1}{2}=-4, \frac{y-2}{2}=-2$

$\Rightarrow x+1=-8, y-2=-4$

$\Rightarrow x=-9, y=-2$

hence coordinate of the other endpoint is (-9,-2)

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3 years ago

If the ratio of the area of two squares is 9:1 find the ratio of their perimeter

Lena [83]

Answer:

3:1

Step-by-step explanation:

area is 2D while the perimeter is a length which is 1D. you can also about this in how the area is units squared while the perimeter is just units. so we need the square roote of 9 and 1, sqrt(9) = 3, sqrt(1) = 1. so the ratio of the perimeter is 3:1

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3 years ago

What is the slope of each line? Line A: y = one-half x minus 4 Line B: y = 2 x minus 3 The slope of line A Equals one-half. The

Anestetic [448]

Answer:

The slope of line A equals one-half. The slope of line B equals 2.

Step-by-step explanation:

The equation of Line A is given by : $y = \frac{1}{2} x - 4$ ........... (1)