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BartSMP [9]
3 years ago
15

What is the solution of |5x| = 70?

Mathematics
2 answers:
kondaur [170]3 years ago
7 0

Answer:

x=-14\:or\:x=14

Step-by-step explanation:

The given equation is

|5x|=70

This implies that;

5x=70\:or\:-5x=70

Solve for x to obtain;

x=\frac{70}{5}\:or\:x=\frac{70}{-5}

x=14\:or\:x=-14

jekas [21]3 years ago
5 0

Assignment: \bold{Solve \ \left|5x\right|=70}

<><><><><>

Answer: \boxed{\bold{x=-14\quad or\quad \:x=14}}

<><><><><>

Explanation: \downarrow\downarrow\downarrow

<><><><><>

[ Step One ] Apply Absolute Rule

Note: \bold{Absolute \ Rule \ \mathrm{If}\:|u|\:=\:a,\:a>0\:\mathrm{then}\:u\:=\:a\:\quad \mathrm{or}\quad \:u\:=\:-a}

\bold{5x=-70\quad \mathrm{or}\quad \:5x=70}

\bold{5x=-70: \ x \ = \ -14}

\bold{5x=70: \ x \ = \ 14}

[ Step Two ] Combine Solutions

\bold{x=-14\quad or \quad \:x=14}

<><><><><><><>

\bold{\rightarrow Rhythm \ Bot \leftarrow}

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Answer:

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Step-by-step explanation:

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ALL THE STEPS:

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Becky and luke bought the same kind of pencils and erasers . Becky spent $1.45 for 2 pencils and 3 erasers . Luke spent $2.65 fo
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Answer: the cost of each pencil is $0.5

the cost of each eraser is $0.15

Step-by-step explanation:

Let x represent the cost of one pencil.

Let y represent the cost of one eraser.

Becky spent $1.45 for 2 pencils and 3 erasers. This means that

2x + 3y = 1.45- - - - - - - - - -1

Luke spent $2.65 for 5 pencils and 1 eraser. This means that

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Subtracting, it becomes

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x = 0.5

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3 years ago
elogram ABCD, diagonals AC and BD intersect at point E. AE=2x, BE=y+10, CE=x+2 and DE=4y−8. Find the length of BD. A. 6 B. 16 C.
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Answer:

D

Step-by-step explanation:

The diagonals of a parallelogram bisect each other, thus

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