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ipn [44]
3 years ago
11

Solve the equation and check your solution. (If an answer does not exist, enter DNE. If all real numbers are solutions, enter RE

ALS.)
5x − 4 = 4x + 8
Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0
5x-4=4x+8
-4x. -4x
X-4=8
+4. +4
X=12
5(12)-4=4(12)+8
60-4=48+8
56=56
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3 0
4 years ago
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Determine the center and radius of each circle.<br> (x – 6)2 + y2 – 8y = 0
rusak2 [61]

Answer:

Step-by-step explanation:

(x-6)² + y²-8y = 0

Put the equation into center-radius form.

complete the square

 coefficient of the y term:  -8

 divide it in half: -4

 square it: (-4)² = 4²

 add 4² to both sides to complete the square and keep the equation balanced:

(x-6)² + (y²-8y+4²) = 4²

(x-6)² + ( y-4)² = 4²

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4 0
3 years ago
In the school election James ran against Ben for secretary James received 75% of the votes if 240 students voted how many votes
scoray [572]

Answer: James did not received 60 votes.

Step-by-step explanation:

Given: In a school election,

Percentage of votes received by James = 75%

Percentage of voted hadn't received by James = 100% - 75% = 25%

If 240 students voted , the number of votes hadn't received by James= 25% of 240

=\dfrac{25}{100}\times 240\\\\=\dfrac14\times240\\\\=60

Hence, James did not received 60 votes.

3 0
3 years ago
5, 3.1.24<br><br> f(x) = 3x² + 5; find f(x + 3) - [f(x) + 3]
Aleks [24]

Given that f(x) = 3x^2 + 5, we have

f(x + 3) = 3 (x + 3)^2 + 5 \\\\= 3 (x^2 + 6x + 9) + 5 \\\\= 3x^2 + 18x + 32

so that

f(x+3) - (f(x) + 3) = (3x^2 + 18x + 32) - (3x^2 + 8) \\\\= \boxed{18x + 24}

3 0
2 years ago
Y=-1,X+2y=9 solve by substitution show all work
Inga [223]

Answer:

x = 11

Step-by-step explanation:

Substitute y = -1 into the equation.

x+2y = 9

; x+2(-1) = 9

x+(-2) = 9

x-2 = 9

x = 9+2

x = 11

4 0
3 years ago
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