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Ilya [14]
3 years ago
13

What are the coordinates of the y-intercept of the line y = -2x + 7?

Mathematics
2 answers:
Mashcka [7]3 years ago
8 0

Answer:

C. (0, 7)

Step-by-step explanation:

Just use a graphing calculator.

Verdich [7]3 years ago
6 0
0,7
Got it right on edge
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Help ASAP please! I dont understand.
igomit [66]

All of the box numbers are decide by the bottom numbers. Ex: 3+4=7, the top box is seven above 3 and 4. So you would add 16 and 17 which is 33. The answer is 33.

7 0
3 years ago
Read 2 more answers
at a country concert,the ratio of number of the Boys to the number of girls is 2:7 if there are 250 more girls than boys how man
sergey [27]

Answer:

100

Step-by-step explanation:

Ratio is a fraction, so ratio of boys to girls would be written as [let boys be "b" and girls be "g"]:

\frac{b}{g}=\frac{2}{7}

Also, there are 250 more girls than boys, so we can write:

g = 250 + b

Lets substitute this into "g" of the ratio we wrote and cross mulitply and solve for b:

\frac{b}{g}=\frac{2}{7}\\\frac{b}{250+b}=\frac{2}{7}\\7b=2(250+b)\\7b=500+2b\\5b=500\\b=\frac{500}{5}=100

The number of boys = 100

3 0
3 years ago
Verify the identity:<br> tan(x+pi/2)=-cotx<br><br> please!!
olya-2409 [2.1K]
First we use sin(a+b)= sinacosb+sinbcosa
and cos(a+b)=cosa cosb -sinasinb

tan(x+pi/2)= sin(x+pi/2) / cos(x+pi/2)
and sin(x+pi/2) = sinxcospi/2 + sinpi/2cosx =cosx, 
<span>cos(x+pi/2) = cosxcospi/2- sinxsinpi/2= - sinx, 
</span> because <span>cospi/2 =0,  </span>and <span>sinpi/2=1

</span><span>=tan(x+pi/2)= sin(x+pi/2) / cos(x+pi/2)= cosx / -sinx = -1/tanx = -cotx
</span>from where <span>tan(x+pi/2)=-cotx</span> 
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3 years ago
The point on the number line shows the opposite of 2 1/2 , or the opposite of the opposite of .
Fynjy0 [20]
I think the answer is -21,-12
5 0
3 years ago
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Find the exact value tan^-1(tan(3pi))
bearhunter [10]
The answer is 0
(According to the radical stuffs)
6 0
3 years ago
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