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ZanzabumX [31]
3 years ago
9

Find the slope of the line. A: -2/3 B: 2/3 C: 3:2 D: -3/2

Mathematics
1 answer:
tia_tia [17]3 years ago
3 0

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (look at the picture) (0, 1) and (-2, -2). Substitute:

m=\dfrac{-2-1}{-2-0}=\dfrac{-3}{-2}=\boxed{\dfrac{3}{2}}\to\boxed{D}

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Dafna11 [192]

width (w) = w

Length (L) = 3w + 4

Area (A) = L x w

25 = (3w + 4)w

25 = 3w² + 4w

0 = 3w² + 4w - 25

w = \frac{-2 +/-\sqrt{79} }{3}

w ≈ 2.3, w ≈ -3.6 (width cannot be negative!)

w ≈ 2.3

Length (L) = 3w + 4 = 3(2.3) + 4 = 6.9 + 4 = 10.9

Answer: width=2.3, Length=10.9

4 0
3 years ago
Please help! use the net to find the lateral area of the prisim
Sergio039 [100]

Answer: 832 cm².

Step-by-step explanation:

1. To calculate the lateral area of the prism by using the net you must:

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P=2l+2w

Where l is the lenght and w is the width:

l=17cm\\w=15cm

Then:

P=2(17cm)+2(15cm)=64cm

- Now you must multiply the perimeter by the height. The height is 13 cm.

Then, the lateral surface area is:

LA=64cm*13cm=832cm^{2}

7 0
3 years ago
ben sells greeting cards for $5 each in his online store. He also charges $1.99 for shipping. The total cost, y, of an order fro
Pachacha [2.7K]

Answer: How many greeting cards he sells

Step-by-step explanation:

The cards are 5 dollars each. 1.99 for shipping is all the same. The only thing that changes is the amount that he sells. So the amount of Greeting cards sold is the dependent variable.

3 0
3 years ago
What is the center and radius of the circle with equation x2 + y2 - 4x + 22y + 61 = 0?
lesantik [10]
Hello,

x^2+y^2-4x+22y+61=0\\\\
(x^2-4x+4) +(y^2+22y+121)-121-4+61=0\\\\
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6 0
4 years ago
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MrRa [10]

8 and 9

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9^3 = 729

512 + 729 = 1241

3 0
3 years ago
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