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makvit [3.9K]
3 years ago
7

Please help its due tomorrow f(x)=4x^2+5x+3 g(x)=5x-7 find g(f(x))

Mathematics
1 answer:
nalin [4]3 years ago
7 0

Answer:

20x²  + 25 x + 8

Step-by-step explanation:

f(x) = 4x² + 5x + 3

g(x) = 5x -7

Then:

g(f(x)) = 5(4x² + 5x + 3) -7

g(f(x)) = 20x² + 25x + 15 - 7

g(f(x)) = 20x² + 25x + 8

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How much money at 12 weeks?<br><br>1). 330<br>2). 290<br>3). 360
zloy xaker [14]

To answer this question, you need to write a linear equation (because the graph is a visibly straight line) that models this situation, then plug in 12.

The general format for a linear equation is y=mx+b, where m is the slope and b is the y intercept.  The y intercept of a line is where it crosses the y axis; for this line, it crosses the y axis at (0, 0) so the y intercept is 0.

To find the slope, use the slope equation: (y2-y1)/(x2-x1).  For y1, y2, x1, and x2, just pick any two points on the line.  We will use (1, 30) and (2, 60):

(60-30)/(2-1)

30/1

30

The line is y=30x.

Plug in 12 for x:

y=30(12)

y=360

3). 360

Hope this helps!!

3 0
3 years ago
What are the answer 1/7 of 21
HACTEHA [7]

Answer:

The answer is 3.

Step-by-step explanation:

1/7(21)= 3

8 0
2 years ago
A spinner is divided into 5 equal sections numbered 1 to 5. The theoretical probability of the spinner stopping on 3 is 20%. Whi
Natali5045456 [20]

.20 * 10000 =2000

Answer:

You should get 2000 3's in 10,000 spins (in theory)

6 0
3 years ago
❗❗PLEASE HELP ON THESE QUESTIONS❗❗
Cerrena [4.2K]

Answer:

i cant see it so thoerefore I cant answer it. Sorry!

Step-by-step explanation:

6 0
2 years ago
Challenge fr y'all. solve this to get 50 points and brainliest coming up if you get the right answer
TEA [102]

Answer:

  • See below

Step-by-step explanation:

a)

i)

<u>Use the law of cosines:</u>

  • AB=\sqrt{PA^2+PB^2-2*PA*PB*cosP}
  • AB=\sqrt{60^2+100^2-2*60*100*cos80} =\sqrt{11516.22} =107.31

ii)

<u>Use the law of sines:</u>

  • sin ∠A / PB = sin ∠P / AB
  • sin ∠A / 100 = sin 80 / 107.31
  • sin ∠A = 100 sin 80 deg / 107.31
  • sin ∠A = 0.92
  • ∠A = arcsin 0.92
  • ∠A = 67° (rounded)

iii)

<u>Bearing of B from A:</u>

  • 90° + (67° - 30°) =
  • 127°

b)

<u>PB is longer distance. Time to reach B:</u>

  • t = d/s
  • t = 100/20 = 5 hours

<u>The speed s of the slower ship:</u>

  • s = d/t
  • s = 60/5 = 12 km/h

3 0
2 years ago
Read 2 more answers
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