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MariettaO [177]
3 years ago
9

What is the solution to this equation?

Mathematics
2 answers:
Alex Ar [27]3 years ago
5 0
The answer is D. 8
Work: 3x-6=18 You have to get x alone on one side
+6=+6 You cancelled out the -6 using +6 (always use opposites and what u do to one side you always do to the other side of the = sign)
3x=24 You cancelled out the x3 using /3
/3=/3
X=8 Your answer
charle [14.2K]3 years ago
4 0
D<x =8 18+6 is 24 and 24/3 is 8
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A manufacturer of flashlight batteries took a sample of 13 batteries from a day’s production and used them continuously until th
kogti [31]

Answer:

A:

Step-by-step explanation:

***I'm pretty sure A should read "NO, because the test value 1.257 is less than the critical value 1.782.  Please check the wording of the problem***

H0 : μ ≤ 400

Ha : μ > 400 (claim)

Sample mean: 6,155/13

Sample standard deviation: √44422.4359

Critical test value:   t > 1.782

t =  (6,155/13 - 400)/[(√44422.4359)/√13]   =   1.257    

    1.257 < 1.782  ;  we fail to reject the null hypothesis

There is not enough evidence at the 5% level of significance to support the claim that the mean  battery life is at least 400 hours.  

3 0
3 years ago
What is 59.36 Repeated as a fraction
Bas_tet [7]

Answer:

1484/25 is 59.36 as a fraction

3 0
4 years ago
If ΔABC is an equilateral triangle with, AB = 2x + 17, BC = 6x - 19, AC = 4x-1, find x and the measure of each side
Soloha48 [4]

Answer:

x=9, AB=BC=AC=35

Step-by-step explanation:

Equilateral triangles have 3 congruent sides, so all 3 sides have the same length. Therefore, we know that AB=BC=AC. We are given the lengths of all 3 sides in terms of x, but we only need to set two of them equal to each other to solve for x. Let's use AB and BC to solve for x. We know that AB=BC, AB=2x+17, and BC=6x-19. Therefore, we can write the following equation to solve for

AB=BC\\2x+17=6x-19 (Substitute given values into equation)

Solving for x, we get:

2x+17=6x-19\\2x+17-17=6x-19-17 (Subtract 17 from both sides of the equation to isolate constants)

2x=6x-36 (Simplify)

2x-6x=6x-36-6x (Subtract 6x from both sides of the equation to isolate x)

-4x=-36 (Simplify)

\frac{-4x}{-4}=\frac{-36}{-4} (Divide both sides of the equation by -4 to get rid of x's coefficient)

x=9 (Simplify)

Therefore, AB=2x+17=2*9+17=18+17=35, and AB=BC=AC=35. Hope this helps!  

3 0
3 years ago
ZE and ZF are vertical angles with mZE = 8x + 8 and mZF = 2x +38.<br> What is the value of x?
Dovator [93]

Answer:

Since ZE and ZF are vertical angles, they are congruent.

8x+8 = 2x+38

8 = 2x-8x+38

8 = -6x+38

8-38 = -6x

-30 = -6x

x = -30/-6

x = 5

7 0
3 years ago
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1x-89x*90-300+9-2+30 what is the answer to that
musickatia [10]
−8009x−263 is the answer
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3 years ago
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