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Lostsunrise [7]
3 years ago
13

Can someone at least help me with this one... the bottom empty one...

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
6 0
157 is equal to half of the circumference...

C=2πr so C/2 is:

πr=157

r=157/π ft

r≈50 ft
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Help asap idek what to do
daser333 [38]

So to solve this question, your goal is to find out how the way it is solved is not correct.

Your answer would be: On the third line, the student adds the 8 to both sides instead of subtracting. The way the initial equation is given is

y-(-8)=-6(x-2). After distributing the six, the student should make the 8 positive because subtracting a negative makes a positive. After solving, the equation should look like: y(+8)=-6x+12, so you would subtract the 8 from both sides instead of adding it, and solve from there.

5 0
3 years ago
The slope of a line is –2 and its y-intercept is (0, 3). What is the equation of the line that is parallel to the first line and
notsponge [240]

Answer:

D. y=-2x-6

Step-by-step explanation:

<u><em>First start with what we know....</em></u>

y = -2x + 3 (Slope Intercept Form)

<u><em>Because of this we can eliminate B.  </em></u>

<u><em>Parallel means that the lines wouldn't be touching which means they should have the same slope and the only one with the same slope is D. </em></u>

7 0
4 years ago
Read 2 more answers
HELPPP PLEASEEEEEE!!!!!!!!!1
salantis [7]

Hi!

We can see the river is a straight line.

This means that the angles that fall upon it are supplementary angles, and will add up to 180 degrees.

Therefore:

x+2x+21=180

Combine like terms:

3x+21=180

Subtract 21 from both sides:

3x=159

Divide both sides by 3:

x=53

Therefore, the value of x is 53 degrees.

7 0
2 years ago
Write a quadratic equation whose solutions are 7i and -7i
mrs_skeptik [129]
x = \pm 7i  \\  \\ x^2 = -49 \\  \\ x^2 +49 = 0
4 0
4 years ago
In a class of 30 students, 21 play an instrument and 8 play a sport. There are 7
tigry1 [53]

Step-by-step explanation:

The formula for probability is favourable outcome/ Total outcome. So the answer might be 7/30.

7 0
3 years ago
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