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adell [148]
4 years ago
14

What is the answer to this equation-5=X+X-5

Mathematics
1 answer:
Goryan [66]4 years ago
5 0
I would think x is equal to 0, since 0-5=-5, and of course 0+0=0
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Determine the approximate value of A.
bonufazy [111]

Answer:

40 degrees

Step-by-step explanation:

If all triangles add up to 180°, the 180-104-36=40, so the answer is 40°

4 0
3 years ago
X2 - 6x + 12 and y = 2x - 4, algebraically are
olga_2 [115]

<em><u>The solution is (4, 4)</u></em>

<em><u>Solution:</u></em>

<em><u>Given system of equations are:</u></em>

y = x^2 - 6x + 12 ------ eqn\ 1\\\\y = 2x - 4 ---------- eqn\ 2

<em><u>Substitute eqn 2 in eqn 1</u></em>

x^2 - 6x + 12 = 2x - 4

Make the right side of equation 0

x^2 - 6x + 12 - 2x + 4 = 0\\\\x^2 -8x + 16 = 0

<em><u>Solve by quadratic equation</u></em>

\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\mathrm{For\:}\quad a=1,\:b=-8,\:c=16:\\\\x=\frac{-\left(-8\right)\pm \sqrt{\left(-8\right)^2-4\cdot \:1\cdot \:16}}{2\cdot \:1}\\\\x=\frac{-\left(-8\right)\pm \sqrt{0}}{2\cdot \:1}\\\\x = \frac{8}{2}\\\\x = 4

<em><u>Substitute x = 4 in eqn 2</u></em>

y = 2(4) - 4

y = 8 - 4

y = 4

Thus solution is (4, 4)

5 0
3 years ago
Express your answer in scientific notation. 1.4 x 10^9 - 8.6 x 10^8
garik1379 [7]

Answer:

-7.5 x 10^1

Step-by-step explanation:

subtract numbers and exponents and make sure that number is between 1 and 10.

4 0
3 years ago
Answer plz. Give an explanation so I know ur not just getting points so I dont report. Thank you!
wariber [46]

Answer: A, D

Step-by-step explanation:

68 is the initial amount.

A is correct because 0.2(68) represents 20% of 68. Since you're looking for 80% of 68, you subtract 0.2(68) from 68.

D is correct because it directly takes 80% of 68, which is what the question is asking for.

6 0
3 years ago
Which BEST describes the shape of the distribution?
kirza4 [7]

I think the correct answer is c please don’t be mad if I am wrong❤️

8 0
4 years ago
Read 2 more answers
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