3 years ago

Which expression is equivalent to -1/2(1/4x-3/8)?

Mathematics

2 answers:

Nesterboy [21]3 years ago

7 0

A is the correct answer

Liono4ka [1.6K]3 years ago

3 0

Answer:

A. -1/8x + 3/16

Step-by-step explanation:

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Sedbober [7]

Answer:

6 - 3.5 = 2.5

Step-by-step explanation:

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3 years ago

Can someone help me find the value of x and the value of y? I need them to show their work, too.

solniwko [45]

$\bf \begin{cases} x-2y=0\\ 2x-5y=-4 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ x-2y=0\implies x=2y \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{substituting the found \underline{x} in the 2nd equation}}{2(2y)-5y=-4}\implies 4y-5y=-4\implies -y=-4 \\\\\\ y=\cfrac{-4}{-1}\implies \blacktriangleright y=4 \blacktriangleleft \\\\[-0.35em] ~\dotfill$

$\stackrel{\textit{substituting the found \underline{y} in the 1st equation}}{x-2(4)=0}\implies x-8=0\implies \blacktriangleright x=8 \blacktriangleleft \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (8,4)~\hfill$

4 0

3 years ago

Multiply and simplify: sq rt 7x ((sq rt x)-7sq rt. 7)

jarptica [38.1K]

7x(√x - 7√7) Multiply √7x to "√x" and "-7√7" respectively:
√7x*√x - 7√7*√7x
First is to simplify: √7x² - 7√7²x
Extract the squares: x√7 - 7*7√x

Then, we simplify: x√7 - 49√x
After simplifying the equation, I got the answer x√7 - 49√x.

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3 years ago

Read 2 more answers

Cuánto es 324 por 171

Nat2105 [25]

Answer:

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I hope this helped

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3 years ago

Decimals between 10 15 with an interval of 0.75 between each pair of decimals

aleksley [76]