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ElenaW [278]
2 years ago
14

2x(x-5) -x (3 + 2x) = 26 help me pls

Mathematics
2 answers:
nydimaria [60]2 years ago
6 0

Answer:

x = -2

Step-by-step explanation:

2x(x-5)-x(3+2x) = 26\\2x^{2} -10x-3x-2x^{2}  = 26\\-13x=26\\x=\frac{26}{-13} \\=-2

Its basically the order of operations, from left to right , evaluate brackets (if possible), then multiplication or division, lastly followed by addition or subtraction.

Svetradugi [14.3K]2 years ago
6 0

2x2-10x-3x-2x2=26

Eliminam opusele

reducem termenii

-13x=26

imparte ambele parti

x=-2

Step-by-step explanation:

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30 70 80 how many triangles cant you construct with these measurments
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Answer:

One triangle can be constructed.

Step-by-step explanation:

 Recap that all the interior angles in a triangle add up to 180. With the given measurements of the angles, 70 plus 80 plus 30 equals 180. Each triangle has the sum of 180 degrees. Therefore, there can only be one triangle that can be constructed. I think you were suppose to put can, not can't. Hope this helps!

3 0
4 years ago
A library has an initial late fee of $0.50 cents and charges an additional $0.05 per day. What is the rate of change?
astraxan [27]

Answer:

Rate = \$0.05

Step-by-step explanation:

Given

Base\ Amount = \$0.50

Additional = \$0.05

Required

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3 years ago
4. [4 pts] For any non-zero number a, one can explain why aº = 1 by the rules of exponents.
ozzi

Due to length restrictions, we kindly invite to read the explanation of this question to learn more on power properties.

<h3>How to understand power properties</h3>

Herein we must explain some properties of power expressions with integer exponents. A power of the form aᵇ is a product of the form a × a ×  a × a × ... × a, where a is repeated b times. a and b are the base and the exponent of the power.

First, we proceed to demonstrate that a⁰ = a:

a⁰            Given

a¹ ⁻ ¹        Existence of the additive inverse / Modulative property

a¹ · a⁻¹     Multiplication of powers of equal base

a¹ · (a¹)⁻¹   Power of a power / (- a) · b = - a · b

1               Existence of multiplicative inverse / Modulative property / Result

By definition of power, we find that a¹ as a is only only time.

To learn more on power properties: brainly.com/question/2499975

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2 years ago
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She went over by 1/6 of a cup because 64 is half of 128 and 2/3 is greater then 1/2 
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