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dezoksy [38]
3 years ago
7

F(x) = 2x2 – x + 9 Find f (4)

Mathematics
1 answer:
Alex3 years ago
3 0

Answer:

45

Step-by-step explanation:

F(-4). F(x) = 2x^2 - x + 9

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The perimeter of a triangle is 32 feet. One side of the triangle is 3 times the second side. The third side is 12 feet longer
Ivenika [448]

We have a triangle whose perimeter is 32 feet. Some information regarding the sides of the triangle is given:

GiveN:

  • One side is 3 times the second side.
  • Third side is 12 feet longer than the second side.

As we can see that, two sides of the triangle are defined the second sides. It means First and third side can be expressed in the form of second side.

  • So let the second side be x

Then,

  • First side = 3x
  • And, third side = x + 12

We know that, perimeters is the sum of the lengths of all sides of the triangle, So it can be written as:

3x + x + x + 12 = 32

Solving it further,

5x + 12 = 32

Subtracting 12 from both sides,

5x + 12 - 12 = 32 - 12

5x = 20

Dividing 5 from both sides,

\frac{5x}{5}  =  \frac{20}{5}

x = 4

Then,

  • First side = 3x = 12 feet
  • Second side = 4 feet
  • Third side = x + 12 = 16 feet

And we are done with the answer !!

#CarryOnLearning

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4 0
3 years ago
Solve for x <br><br> -7(1-8x)=105
Sunny_sXe [5.5K]
-7 + 56x = 105
56x = 105 + 7
56x = 112
x = 2
4 0
3 years ago
What is 5.3 x 10 to the nearest 10th
miv72 [106K]
Well 5.3 x 10 is 53.
7 0
3 years ago
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How do you earn $120 from his job yesterday. Today he expects to earn 15% less than yesterday and tomorrow he expects to earn 15
Ilya [14]
They took tax from his work
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Write the point from of the equation for a line that passes through (6,—1) with a slope of 2
Paraphin [41]

Answer:

y = 2x-13

Step-by-step explanation:

The equation for a line is

y = mx+b where m is the slope and b is the y intercept

y = 2x+b

We know a point so we have a y and an x, so we can solve for b

-1 = 2(6) +b

-1 =12+b

Subtract 12 from each side

-1-12 = 12-12+b

-13 =b

Substitute this into y = 2x+b

y = 2x-13

7 0
3 years ago
Read 2 more answers
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