2 years ago

HELP for 20 points PLAES

Mathematics

1 answer:

Yuki888 [10]2 years ago

3 0

Answer:

Step-by-step explanation:

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Write an equivalent expression for 4g+2 using the distributive property.

snow_lady [41]

4 * g + 2 ....... or do u want me to figure what g is

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3 years ago

What is 2×2hhhhggggggggggggggg

TiliK225 [7]

Answer:

2*2h4g15

Step-by-step explanation:

count how many "g"s there are and same with "h"

5 0

2 years ago

Please help solve this system of equations

stepan [7]

Make a substitution:

$\begin{cases}u=2x+y\\v=2x-y\end{cases}$

Then the system becomes

$\begin{cases}\dfrac{2\sqrt[3]{u}}{u-v}+\dfrac{2\sqrt[3]{u}}{u+v}=\dfrac{81}{182}\\\\\dfrac{2\sqrt[3]{v}}{u-v}-\dfrac{2\sqrt[3]{v}}{u+v}=\dfrac1{182}\end{cases}$

Simplifying the equations gives

$\begin{cases}\dfrac{4\sqrt[3]{u^4}}{u^2-v^2}=\dfrac{81}{182}\\\\\dfrac{4\sqrt[3]{v^4}}{u^2-v^2}=\dfrac1{182}\end{cases}$

which is to say,

$\dfrac{4\sqrt[3]{u^4}}{u^2-v^2}=\dfrac{81\times4\sqrt[3]{v^4}}{u^2-v^2}$

$\implies\sqrt[3]{\left(\dfrac uv\right)^4}=81$

$\implies\dfrac uv=\pm27$

$\implies u=\pm27v$

Substituting this into the new system gives

$\dfrac{4\sqrt[3]{v^4}}{(\pm27v)^2-v^2}=\dfrac1{182}\implies\dfrac1{v^2}=1\implies v=\pm1$

$\implies u=\pm27$

Then

$\begin{cases}x=\dfrac{u+v}4\\\\y=\dfrac{u-v}2}\end{cases}\implies x=\pm7,y=\pm13$

(meaning two solutions are (7, 13) and (-7, -13))

8 0

2 years ago

1/8 plus 3/4: plz tell me I need help

xenn [34]

The answer should be 7/8

6 0

3 years ago

Read 2 more answers

IF YOU GET IT RIGHT I WILL GIVE YOU 10 PTS AND BRAINLY CROWN SO PLEASE HELP ME!!!!!!

Alexandra [31]

I believe the answer to be C)81 ft2

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3 years ago

Read 2 more answers