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3 years ago

Solve the proportion. 8/7 = 168/x A. x = 1176 B. x = 49 C. x = 0 D. x = 147

Mathematics

2 answers:

Virty [35]3 years ago

7 0

Answer:

OPTION D

Step-by-step explanation:

$\frac{8}{7} =\frac{168}{X}\\8=\frac{168*7}{X} \\\\X=\frac{168*7}{8} \\X=147$

Basile [38]3 years ago

4 0

147 because 8 x 21 =168 which means you have to multiply 7 by 21 which equals 147

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3 years ago

−7x−6y=2 7x+4y=−6 solve for x and y

ikadub [295]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:x=-2,\:y=2}$

Step-by-step explanation:

$\begin{bmatrix}-7x-6y=2\\ 7x+4y=-6\end{bmatrix}$

$\mathrm{Substitute\:}x=-\frac{2+6y}{7}$

$\begin{bmatrix}7\left(-\frac{2+6y}{7}\right)+4y=-6\end{bmatrix}$

$\begin{bmatrix}-2-2y=-6\end{bmatrix}$

$\mathrm{For\:}x=-\frac{2+6y}{7}$

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$x=-\frac{2+6\cdot \:2}{7}\\\\x=-2$

5 0

2 years ago

Find 24 x 23 slove and share

Brrunno [24]

Answer:

Step-by-step explanation:

24 x 23 = 552

20 x 23 = 460

4 x 23 = 92

460 + 92 = 552

4 0

3 years ago

Read 2 more answers

2. If GFE~GJH, find the value of FG.

Alex73 [517]

Answer:

77 units

Step-by-step explanation:

Given two similar triangles.

Corresponding parts of similar figures have same ratio.

Use ratios to find the value of x:

(4x - 5)/(x + 7) = 35/12.5
(4x - 5)/(x + 7) = 14/5
5(4x - 5) = 14(x + 7)
20x - 25 = 14x + 98
20x - 14x = 98 + 25
6x = 123
x = 123/6
x = 20.5

Find the value of FG:

FG = 4*20.5 - 5 = 77

5 0

3 years ago