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zhannawk [14.2K]
3 years ago
9

Consider the linear system of equations

Mathematics
1 answer:
Helen [10]3 years ago
8 0

Answer:

x=2,   y=3,   z=-14

Step-by-step explanation:

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Solve for x (SHOW WORK)<br><br> -7(1-8x)=105
Travka [436]

Answer is x=2

-7(1-8x)=105

-7+56x=105

Add 7 to both sides

56x=112

Divide both sides by 56

x=2


3 0
4 years ago
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The equation f(x) = 2x²-x+ 4 has roots a and B.
AleksandrR [38]

Answer:

(a-1)²(b-1)²=a²b²+a²-b²+1²=(ab)²+(a-b)²+ 1

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3 years ago
What percent is 45 of 72?
Varvara68 [4.7K]

Answer:

32.4

32.4 is 45% of 72

Step-by-step explanation:

Solution:

What is 45% of 72?

Y is 45% of 72

Equation: Y = P% * X

Solving our equation for Y

Y = P% * X

Y = 45% * 72

Converting percent to decimal:

p = 45%/100 = 0.45

Y = 0.45 * 72

Y = 32.4

3 0
3 years ago
2x2 + 12x – 3 = 0 <br> I don't know the steps and was wondering if I could get help.
Serhud [2]

2×2 then -3

I hope this can help

4 0
3 years ago
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Select the equation of the line that passes through the .5,7 and is perpendicular to the line x equals 4
lions [1.4K]
Hello!

To be perpendicular to x = 4, the line must be y = something. This eliminates answer choices #2 and #4. Also, to pass through the point (.5, 7), the line must be y = 7.

So answer choice #3.

Hope this helps!! Let me know if you have ANY questions.
8 0
3 years ago
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