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Lostsunrise [7]
3 years ago
10

What is (x - 8)(x + 4) + (x - 3)(x + 9)?

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

the answer is b

Step-by-step exp.anation:

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Grace [21]

Answer:

A

Step-by-step explanation:

plz brainlest

7 0
2 years ago
What is the value of y?
Romashka [77]

Answer:

y=42

Step-by-step explanation:

y+48+90=180

y=180-138

y=42

7 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
2 years ago
What’s is the constant of proportionality in the equation y=5/4x
marshall27 [118]
5/4 is the constant of proportionality
7 0
2 years ago
What is 9+1 O.o plssssss help its in my 7th grade math question
jonny [76]

Answer:

3738

Step-by-step explanation:

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5 0
2 years ago
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