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lord [1]
2 years ago
14

What is the value of (8+3k)²-(-k-6)²¹ if k=5​

Mathematics
1 answer:
Dmitrij [34]2 years ago
3 0

Answer:=530

Step-by-step explanation:

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Hi can someone please help me with this question
olga2289 [7]

Answer: B. 3x + 1/5

tom's pencil is longer than Ellen's pencil:

5x + 2/5 - (2x + 1/5) = 5x - 2x + 2/5 - 1/5 = 3x + 1/5 (cm)

Step-by-step explanation:

4 0
3 years ago
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Question 1<br> If f(x) = (x-1), what is f(-4.2)?
lana66690 [7]

Answer:

-5.2

Step-by-step explanation:

4 0
3 years ago
Which is the approximate solution for the system of equations 3x+4y=2 and 4x+y=-4
harina [27]

3x+4y=2\qquad\text{subtract 3x from both sides}\\\\4y=-3x+2\qquad\text{divide both sides by 4}\\\\y=-\dfrac{3}{4}x+\dfrac{2}{4}\to y=-\dfrac{3}{4}x+\dfrac{1}{2}\\\\for\ x=0\to y=-\dfrac{3}{4}(0)+\dfrac{1}{2}=0+\dfrac{1}{2}=\dfrac{1}{2}\to\left(0,\ \dfrac{1}{2}\right)\\\\for\ x=2\to y=-\dfrac{3}{4}(2)+\dfrac{1}{2}=-\dfrac{3}{2}+\dfrac{1}{2}=-\dfrac{2}{2}=-1\to(2,\ -1)\\--------------------------------\\

4x+y=-4\qquad\text{subtract 4x from both sides}\\\\y=-4x-4\\\\for\ x=0\to y=-4(0)-4=0-4=-4\to(0,\ -4)\\\\for\ x=-1\to y=-4(-1)-4=4-4=0\to(-1,\ 0)\\\\Answer:\ \boxed{A.\ (-1.4,\ 1.5)}

6 0
3 years ago
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A squirrel in a 22 ft tall tree looks down at an angle of 34° at an acorn on the ground. How far is the squirrel from the acorn?
Alina [70]

Answer:

The squirrel is 27 feet away from the squirrel.

Step-by-step explanation:

4 0
3 years ago
Solve for x in the equation x/2 = 17.<br> A. x =8.5 <br> B. x = 19 <br> C. x = 15 <br> D. x = 34
viva [34]
X/2 means 1/2x

To delete the denominator multiply for 2. You have to multiply also 17 for 2 since you have half x.

2*1/2x = 17*2

x = 34

Answer D.
3 0
3 years ago
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