How do I
find my y-intercept

Answers

Answer 1
Answer: on a graph, you find where the line crosses the y-axes and that is the y inctercept.

in an equation with the format y=mx+b  the b is the y intercept

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In 2000 the total amount of gamma ray bursts was recorded at 6.4 million for a city. In 2005, the same survey was made and the total amount of gamma ray bursts was 7.3 million. If the Earth can only withstand 1 billion gamma ray bursts, in what year will this become a problem? (Find the year in which the gamma ray bursts is 1 billion.)

Answers

Let's assume

It started in 2000

so, t=0 in 2000

P_0=6.4million

we can use formula

P(t)=P_0 e^(rt)

we can plug value

P(t)=6.4 e^(rt)

In 2005, the same survey was made and the total amount of gamma ray bursts was 7.3 million

so, at t=2005-2000=5

P(t)=7.3 million

we can plug value and then we can solve for r

7.3=6.4 e^(r*5)

r=0.02632

now, we can plug back

P(t)=6.4 e^(0.02632t)

now, we have

P(t)=1 billion =1000 million

so, we can set it and then we can solve for t

1000=6.4 e^(0.02632t)

t=191.924

approximately

t=192

Year is 2000+192

year is 2192................Answer

I dont get what to do

Answers

I'm pretty sure you're just solving for x. For example, in 26. You have:
x/18 = 4.5
You multiply both sides by 18 to get the x by itself
x = 4.5 • 18
You simplify this
x = 81
24.  x= 15.625
26. x= 81
28. x= 980
30. x=2 

Combine like terms to create an equivalent expression
20(-1.5r+0.75)

Answers

Answer:

-30r+15

Step-by-step explanation:

distribute the 20 to each number inside the parentheses

A line with a slope of 1 passes through the point (3,-8). What is it's equation in slope-intercept form?​

Answers

Answer:

Given:

Slope(m)= 1

Passing Point = (3,-8)

Using one point formula,

y-y1 = m(x-x1)

or, y+8 = 1×(x-3)

or, y+8 = x - 3

or, x - y = 11

Now,

Dividing both sides by 11, we get

x/11 - y/11 = 1 --------i)

Comparing eqn. i) with slope intercept form [x/a + y/b = 1]

Answer: The equation would be y=1x-11

Step-by-step explanation:

slope of this line is 1

y=1x

3 times 1 = 3

to get from 3 to -8 we subtract 11

y=1x-11

What is the measurement of N?
A) 138°
B) 139°
C) 140°
D) 141°

Answers

We have an 180 degree line, so lets solve. 

180 - 39 = 141
 n = 141 degrees

Answer:  N = 141
° 


This angle is called, a straight angle. This angle measures 180°. To find the answer to this we will do the following:-

180° - 39° = N
180° - 39° = 141
Angle N = 141.

CHECK OUR WORK:-

141 + 39 = 180
We were RIGHT!!!

So, the measurement of N is D)141°.

Hope I helped ya!! XD

80% of how many games is 32 games?

Answers

percent means parts out of 100 so 
80%=80/100=8/10=0.8
'of' can be translated to as multiply 
0.8 times x games is 32 games
0.8 times x=32
note:0.8x= 0.8 times x
0.8x=32
multiply both sides by 10
8x=320
divide both sides by 8
x=40
the number is 40
So, you can set it up like: is over of = % over 100
We need a proportion to solve that answer.
So put the "is" part, which is 32 on top on the left over the "of" part, which is what you do not know, so put x as a variable. Now put 80% since it's the percentage over 100 on the right side. Now, it should look like this: 32/x=80/100(you do not need to include the % sign). Now cross multiply and you get: 80x=3200. Now divide 80 on both sides and you get 40. So there would be 40 games. 
Hope this helps. :-) 
PS I'm sure glad I learned about proportions to help. (I hope I did)