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lina2011 [118]
2 years ago
13

Select the letter of the best answer choice. Use 3.14 or 22/7 for π

Mathematics
1 answer:
valkas [14]2 years ago
5 0
C = 2πr
141.3 = 2(3.14)r
141.3 = 6.28r
22.5 = r
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How to find the slope and y-intercept using a graph??????????
svlad2 [7]
The y-intercept is where on the graph the line is intersecting the y=axis. Slope is in the form y=mx+b  (b=y-intercept, mx=how far up and over.)
6 0
2 years ago
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The base of a triangle is nine centimeters longer than the perpendicular height. If the area of the triangle is 180 square centi
Rom4ik [11]

Answer:

<em>The base is 24 cm long.</em>

Step-by-step explanation:

<u>Equations</u>

Let's call

b= base of the triangle

h=height of the triangle

The base is 9 cm longer than the height, thus:

b = h + 9

The area of the triangle is:

\displaystyle A=\frac{bh}{2}

\displaystyle A=\frac{(h+9)h}{2}

And its value is 180:

\displaystyle \frac{(h+9)h}{2}=180

Multiplying by 2:

(h+9)h=360

Operating:

h^2+9h-360=0

Factoring:

(h-15)(h+24)=0

The only valid positive solution is:

h = 15 cm

And b = h + 9 = 24

b = 24 cm

The base is 24 cm long.

7 0
3 years ago
What is the volume of a cone with a radius of 2 and a height of 19?
kykrilka [37]

Remember that the cone volume formula is V=\pi r^2\frac{h}{3} , with r = radius and h = height. Using our information, we can form our equation as such: V=\pi 2^2\frac{19}{3} (I'll be keeping the answer in pi form.)

Firstly, solve the exponents:V=\pi 4\frac{19}{3}

Next, multiply 4 and 19/3 together and your answer should be (rounded to the hundreths): V = 25.33π un^3

5 0
3 years ago
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Katyanochek1 [597]

Answer:

because the total is 300 not 100 so 50 is not reasonable because that is the percentage they planted and since it is more than 100 then it should be a percent of 300 not 100. Maya is wrong about placing 50 bulbs instead they placed 150.

Step-by-step explanation:

8 0
2 years ago
Need help on this one
Lady_Fox [76]
To find what y is you have to do y1-y2/x1 - x2



Hope this helped
3 0
3 years ago
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