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3 years ago

PLEASE HELP ME ASAP!! ITS MY LAST TEST ON EG!! 20 POINTS!

Mathematics

1 answer:

puteri [66]3 years ago

6 0

Answer:

V = 1/3 (90)(6) m³

Step-by-step explanation:

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Question 3 (1 point)

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2 years ago

Use the method of ELIMINATION to solve the system. You must SHOW ALL WORK. Make sure you have an answer for both x and y.

jekas [21]

Answer:

<h3>Required <u>Answer</u><u>:</u><u>-</u></h3>

$\sf 4x+8y=10\dots\dots (1)$

$\sf -4x+2y=-30\dots\dots (2)$

by adding eq (1) and eq (2) we get

${:}\longrightarrow$ $\sf 4x+8y=20$

${:}\longrightarrow$ $\sf -4x+2y=-30$

${:}\longrightarrow$ $\sf 10y=-10$

${:}\longrightarrow$ $\sf y={\dfrac {-10}{10}}$

${:}\longrightarrow$ ${\underline{\boxed{\bf y=-1}}}$

Substitute the value in eq (2)

${:}\longrightarrow$ $\sf -4x+2 (-1)=-30$

${:}\longrightarrow$ $\sf -4x-2=-30$

${:}\longrightarrow$ $\sf -4x=-30+2$

${:}\longrightarrow$ $\sf -4x=-28$

${:}\longrightarrow$ $\sf x={\dfrac {-28}{-4}}$

${:}\longrightarrow$ ${\underline{\boxed{\bf x=7}}}$

$\therefore$ ${\underline{\boxed{\bf (x,y)=(7,-1)}}}$

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3 years ago

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Solve 27 = 34x + 1.<br><br> one fourth<br> one half<br> 2<br> 4

umka21 [38]

Answer:

x = 13/17

Step-by-step explanation:

27 = 34x + 1

34x = 27 - 1

34x = 26

x = 26/34

x = 13/17

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2 years ago

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