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Mila [183]
3 years ago
10

How to write 1 billion and 67.9 in expanded form

Mathematics
1 answer:
bogdanovich [222]3 years ago
5 0
1,000,000,000+60+7+.9 :)
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A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
Iteru [2.4K]

Answer:

8.90 seconds

Step-by-step explanation:

When the rocket hits the ground, its height ( <em>y</em> ) will be zero. This means we can write the equation as:

  • 0 = -16x²+129x+119

So we need to <u>solve that equation</u>:

  • a = -16
  • b = 129
  • c = 119
  • x = \frac{-b\frac{+}{-}\sqrt{b^2-4ac}  }{2a}

x₁ = -0.84

x₂ = 8.90

We discard x₁, as it is negative.

So the answer is x₂, 8.90 seconds.

8 0
2 years ago
10. The LCM of 9, 12 and n is 252. If n is odd, find all the possible values of n.​
kirza4 [7]

Answer:

I am pretty sure all you need are the factors of 252 and list all of them

4 0
2 years ago
In 1999, the share price for General Motors stock was $144 per share but has been declining at an average rate of 14% per year.
vodomira [7]

Answer:  $5.22  (in the year 2021)

========================================================

Explanation:

The year 2021 is 22 years after 1999 since

2021 - 1999 = 22

That means we'll plug x = 22 into the equation given to us

P = 144*(0.86)^x

P = 144*(0.86)^22

P = 5.21588994768589 which is approximate

P = 5.22 rounding to the nearest cent

The share price is about $5.22 in the year 2021.

This assumes that the 14% decline keeps happening year after year; however, in reality, stocks are more complicated and fluctuate more randomly if anything.

7 0
2 years ago
Find the center and radius of the circle with the equation. Please show work!
mina [271]

Answer:

<h2>(1, -2)</h2>

Step-by-step explanation:

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - center

r - radius

We have:

x^2-2x+y^2+4y=4\qquad\text{add}\ 1^2\ \text{and}\ 2^2\ \text{to both sides}\\\\x^2-2x+1^2+y^2-2(-2)(y)+2^2=2(1^2)(2^2)\qquad\text{use}\ (a\pm b)^2=a^2\pm2ab+b^2\\\\(x-1)^2+(y-(-2))^2=8\\\\h=1,\ k=-2\to(1,\ -2)

3 0
2 years ago
Find the slopes of line j and line k. Are they parallel? IF U ANSWER RIGHT I WILL MARK BRAINLIEST PLEASE ANSWER NEED ANSWER FAST
zloy xaker [14]

Answer:

The lines are certainly not parallel!

Step-by-step explanation:

The slope of line J is 3/2, while the slope of line k is exactly 1 :)

5 0
3 years ago
Read 2 more answers
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