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Rus_ich [418]
3 years ago
10

Find (4x2 - 2x + 1) + (2x + 8)

Mathematics
1 answer:
iVinArrow [24]3 years ago
6 0

Answer: 4^2 + 9

Step-by-step explanation:

Simplify

4x^2 - 2x + 1 + 2x + 8

Collect like terms

4^2 + (-2x+2x) + (1+8)

Simplify

4x^2 + 9

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Solve - pv + 40 &lt; 65 for v<br> solve 7w - 3r = 15 for r
Katarina [22]

Answer:

v > -25/p

r = -5 +7/3 w

Step-by-step explanation:

- pv + 40 < 65

Subtract 40 from each side

- pv + 40-40 < 65-40

-pv < 25

Divide each side by -p  (remember to flip the inequality since we are dividing by a negative)

-pv/-p > 25/-p

v > -25/p


7w - 3r = 15

Subtract 7w from each side

7w-7w - 3r = 15-7w

-3r = 15-7w

Divide by -3

-3r/-3 = (15-7w)/-3

r = -5 +7/3 w

8 0
3 years ago
BRAINIEST ANSWER <br> FIND THE VOLUME AND ROUND TO THE NEAREST TENTH :))) <br> Please help
kolezko [41]

Answer: 3,150 ft.

Step-by-step explanation: multiply all sides together

3 0
3 years ago
Fufuvdgnchjuvvuvivivib
svet-max [94.6K]
The answer to this question is b
5 0
3 years ago
2<br><br> XM<br><br> -4.<br><br> -2<br><br> 2<br><br> 2<br><br> Find the slope of the line.
Margaret [11]

Answer:

100

Step-by-step explanation:

1+1=2+5=7+3=10

8 0
3 years ago
Mr. Gonzales is replacing a cylindrical air-conditioning duct. He estimates the radius of the duct by folding a ruler to form tw
GalinKa [24]

Answer:

  • <em><u>5.6875 in</u></em>

Explanation:

At the point of tangency, the <em>tangent </em>to a circle and the <em>radius</em> form a right triangle (the radius is perpendicular to the tangent).

Here you are given the length of the tangent (6in), and the distance from the bisected vertex to the circle (2.75 in)

I tried to upload the drawing but the tool is not allowing it now.

In the figure:

  • The length of the tangent (6 in) is one leg of the triangle
  • The distance from vertex and the circle (2.75in)  along with the radius forms the hypotenuse of the right triangle: 2.75 + r.
  • The other leg is the radius, r.

Then, you can use Pythagorean theorem:

  • (r)² + (6)² = (r +2.75)²

Solve:

  • r² + 36 =  r² + 5.5r + 7.5625
  • 5.5r = 36 - 7.5625
  • 5.5r = 28.4375
  • r = 5.6875

The solution is in inches: r = 5.6875 inches ← answer

4 0
3 years ago
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