3 years ago

Plz help I'll give 10 plz

Mathematics

1 answer:

Colt1911 [192]3 years ago

7 0

Answer:

C. 8

Step-by-step explanation:

xy - 3x

x = 4 and y = 5

(4)*(5) - 3(4)

20 - 12 = 8

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4 years ago

1. Evaluate 4x' + 7xy - 5y for x = 5, and y = 3.

Nataly_w [17]

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3 years ago

What’s the value of X?

Andrej [43]

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3 0

3 years ago

Read 2 more answers

2/3x - 9= 3/4<br> Find x 1/5x + 8= 3/4 Find x

mojhsa [17]

$\frac{2}{3}x-9=\frac{3}{4}\ \ \ \ |multiply\ both\ sides\ by\ LCM(3;4)=12\\\\12\cdot\frac{2}{3}x-12\cdot9=12\cdot\frac{3}{4}\\\\4\cdot2x-108=3\cdot3\\\\8x-108=9\ \ \ \ |add\ 108\ to\ both\ sides\\\\8x=117\ \ \ \ |diviede\ both\ sides\ by\ 8\\\\x=\frac{117}{8}\\\\\boxed{x=14\frac{5}{8}}$

$\frac{1}{5}x+8=\frac{3}{4}\ \ |other\ method\ like\ first\ . . . . |subtract\ 8\ from\ both\ sides\\\\\frac{1}{5}x=\frac{3}{4}-8\\\\\frac{1}{5}x=\frac{3}{4}-\frac{4\cdot8}{4}\\\\\frac{1}{5}x=\frac{3}{4}-\frac{32}{4}\\\\\frac{1}{5}x=-\frac{29}{4}\ \ \ \ |divide\ both\ sides\ by\ \frac{1}{5}\to(multiply\ both\ sides\ by\ 5)\\\\x=-\frac{29}{4}\cdot\frac{5}{1}\\\\x=-\frac{145}{4}\\\\\boxed{x=-36\frac{1}{4}}$

4 0

3 years ago

Plz help I'll give 10 plz​

Plz help I'll give 10 plz