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bazaltina [42]
2 years ago
7

Evaluate k^2-4k+3, when k= -2 PLEASER ANSWER ASAP!!!

Mathematics
1 answer:
velikii [3]2 years ago
7 0

Answer:

7

I hope this helps!

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If b= 7, what is 1/3(2b+10)? Please help
goblinko [34]

Answer:8

Step-by-step explanation:

First, substitute 7 into the equation for b:

1/3(2x7+10)

Now, simplify using the order of operations:

1/3(14+10)

Then:

1/3 (24)

And you arrive at your answer:

8

3 0
3 years ago
Read 2 more answers
Solve the system of linear equations by substitution. Check your solution.
bearhunter [10]
1. X+2=3x-4
6=2x
x= 3

2. y= 8-x
8-x = 3x+4
4= 4x
X= 1

3. -2x +3(2x+7)=9
-2x + 6x + 21 = 9
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8 0
3 years ago
1. Rob recently refinanced his monthly student loan
Alenkasestr [34]
C


14²+21²-√49
196+441-7
630

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6 0
2 years ago
A parachutist is 800 feet above the ground when she opens her parachute. She then falls at a constant rate of 5 feet per second.
jeyben [28]
The answer is y=-5x+800, x being the # of seconds she's been in the air, and y being how far above the ground she is.
4 0
3 years ago
Solve the following equation for x to find the total number of people who became members of a social networking site for a certa
Aleksandr [31]

Answer:

x = 360

Step-by-step explanation:

Reorder the terms:

x = 72 + 0.8x

Solving

x = 72 + 0.8x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.8x' to each side of the equation.

x + -0.8x = 72 + 0.8x + -0.8x

Combine like terms: x + -0.8x = 0.2x

0.2x = 72 + 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0

0.2x = 72 + 0.0

0.2x = 72

Divide each side by '0.2'.

x = 360

Simplifying

x = 360

4 0
3 years ago
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