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expeople1 [14]
3 years ago
6

What is 7(x -2) + 3(x + 2) = 5(x - 6)?

Mathematics
2 answers:
Ganezh [65]3 years ago
5 0
The answer is x=-5/22
Inessa [10]3 years ago
3 0

Step-by-step explanation:

7(x-2)+3 (x+2)=5 (x-6)

  • 7x-14+3x+6=5x-30
  • 10x-8=5x-30
  • 10x-5x=-30+8
  • 5x=-22
  • x=-22/5
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Elfie had 3 gifts. each gift had 4 items inside. how many items were there in all? math worksheets
meriva
Hello!

Each gift contained 4 items, and Elfie had 3 gifts. Use multiplication to solve:

3 × 4 = 12

There were 12 items in all.
6 0
3 years ago
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(1 point) Consider the function f(x)=2x3−6x2−48x+5 on the interval [−4,10]. Find the average or mean slope of the function on th
andreyandreev [35.5K]

Answer:

The mean slope on the interval is 68

Step-by-step explanation:

The formula to find the mean slope on an interval [a, b] is given by:

\frac{f(b)-f(a)}{b-a}

So now, we are going to find f(10) and f(-4) and will substitute these values in the formula.

f(10)=2(10)^{3} -6(10)^{2} -48(10)+5\\f(10) =2(1000)-6(100)-480+5\\f(10)=2000-600-480+5\\f(10)=925\\\\f(-4)=2(-4)^{3} -6(-4)^{2} -48(-4)+5\\f(-4)=2(-64)-6(16)+192+5\\f(-4)=-128-96+192+5\\f(-4)=-27

So the mean slope of the function on the interval [-4,10] is:

\frac{f(10)-f(-4)}{10-(-4)} =\frac{925-(-27)}{14} =\frac{925+27}{14} =\frac{952}{14} =68

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3 years ago
A store sells a mixture of peanuts and raisins for $1.75 per pound. If peanuts cost $1.25 per pounds and raisins cost $2.75 per
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How many sides does a 27-gon have?
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