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vaieri [72.5K]
3 years ago
12

⦁ Solve for x: 3|x – 7| = 15 SHOW WORK

Mathematics
2 answers:
nasty-shy [4]3 years ago
5 0
Ez way to do it use distribution 3x-21=15 add 21 to 15 =36
3x=36 divided by 3 both side x=12 x=2
Anna007 [38]3 years ago
4 0

3|x-7| = 15\\\\\implies |x-7|  =\dfrac{15}3\\\\\implies |x -7| = 5\\\\\implies x -7 = 5 ~~ \text{or}~ x - 7 = -5\\\\\implies x = 12 ~~\text{or}~~ x = 2

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Rosa is saving money for a trip. She has already saved $250 and plans to save $40 per week. This situation can be represented by
MissTica

what i got was 490 what i did was first i did 40 times 6 then i added 250 and got 490

6 0
3 years ago
Find the fifth roots of 243(cos 260° + i sin 260°)
Charra [1.4K]
<span>use De Moivre's Theorem:

⁵√[243(cos 260° + i sin 260°)] = [243(cos 260° + i sin 260°)]^(1/5)

= 243^(1/5) (cos (260 / 5)° + i sin (260 / 5)°)

= 3 (cos 52° + i sin 52°)

z1 = 3 (cos 52° + i sin 52°) ←← so that's the first root


there are 5 roots so the angle between each root is 360/5 = 72°

then the other four roots are:

z2 = 3 (cos (52 + 72)° + i sin (52+ 72)°) = 3 (cos 124° + i sin 124°)

z3 = 3 (cos (124 + 72)° + i sin (124 + 72)°) = 3 (cos 196° + i sin 196°)

z4 = 3 (cos (196 + 72)² + i sin (196 + 72)°) = 3 (cos 268° + i sin 268°)

z5 = 3 (cos (268 + 72)° + i sin (268 + 72)°) = 3 (cos 340° + i sin 340°) </span>
3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%28%20-%20%2055%292" id="TexFormula1" title="( - 55)2" alt="( - 55)2" align="absmiddle" clas
Art [367]
The answer is -110.
This is because -55-55=-110.
You have to put -55-55 because the question is asking for you to multiply -55 twice, which is technically-55-55.
8 0
3 years ago
Read 2 more answers
Name the<br> alternate<br> interior angle<br> with angle 5.
const2013 [10]
<h3>Answer:  B) angle 4</h3>

==================================

Explanation:

We can think of lines L and M as sort of train tracks. Inside the train tracks we have the interior angles of: 3, 4, 5, 6

Angles 3 and 6 are one pair of alternate interior angles. They are on alternate sides of the transversal line N.

The other pair of alternate interior angles are 4 and 5

Alternate interior angles are only congruent when L and M are parallel.

5 0
3 years ago
Read 2 more answers
Combine any like terms in the expression. If there are no like terms, rewrite the expression.
stich3 [128]

Answer:

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Step-by-step explanation:

I'm assuming you meant w^3 (w to the third power). In that case, you would just add 34 + 13 + 11 - 18 because they are all like terms (coefficients of w^3).

5 0
2 years ago
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