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Serhud [2]
3 years ago
6

If f(x) = - 4x and g(x)= 5x?, find a. (f+g)(x) b.(-9)(x) C. (fog)(x)

Mathematics
1 answer:
o-na [289]3 years ago
8 0

a) (f+g)(x) = f(x) + g(x) = -4x + 5x = x

b) -9(x) = -9x? I have no idea what this means.

c) (f o g)(x) = (f(g(x)) = f(5x) = -4 (5x) = -20x

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KatRina [158]
First of all what answers are there
6 0
3 years ago
Which equation shows the point-slope form of the line that passes through (3, 2) and has a slope of 1/3
Vikentia [17]

Answer:

y-2=1/3(x-3)

Step-by-step explanation:

Point slope formula: y-y1=m(x-x1)

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Hope this helps!

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3 0
2 years ago
Hello Brainly Teacher Brainly Moderators and trusted helpers!​
tatyana61 [14]

Answer:

  • P(x < 84) = 0.3085 or approximately 31%

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

<em>Hello to you from Brainly team!</em>

<h3>Given</h3>

  • Mean grade μ = 86,
  • Standard deviation σ = 4,
  • Grade limit x = 84.

<h3>To find </h3>

  • Probability of that a randomly selected grade is less than 84 or P(x < 84).

<h3>Solution</h3>

Find z-score using relevant equation:

  • z = (x - μ)/σ

Substitute values and calculate:

  • z = (84 - 86)/4 = - 0.5

Using the z-score table find the corresponding P- value.

  • P(x < 84) = 0.30854 or approximately 31%
4 0
2 years ago
Kristin is 20 km behind a truck that is driving 90 km/h how long will it take her to catch up to the truck? how far will she go
malfutka [58]
Time taken for Kristin to catch up with the truck will be found using the formula
time=(distance)/(speed)
distance=20 km
speed=90 km/h
thus
time=20/90=2/9 hours

Answer: 2/9 hours
5 0
3 years ago
There is a group of student,1/3 are in elementary ,1/2 are in middle school and 15 are in high school. How many are in the group
OverLord2011 [107]
1/2 + 1/3 = 3/6 + 2/6 = 5/6
we have 5/6 so 15 is 1/6 of the entire group
15 × 6 = 90
7 0
3 years ago
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