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RoseWind [281]
3 years ago
15

For f(x)= 2x-5 and g(x)= 3-x , find (f (times) g)(-2)

Mathematics
1 answer:
lara31 [8.8K]3 years ago
8 0
f(x)= 2x-5 \\g(x)= 3-x \\\\f(-2)= 2 \cdot (-2)-5 =-4-5=-9\\\\g(-2)=3-x=3-(-2)=3+2=5\\\\ (f \cdot g)(-2)=f(-2)\cdot g(-2)= (-9)\cdot 5=-45


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Help due in 45 minutes!!
Nat2105 [25]

Answer:

(14,-1)

Step-by-step explanation:

okay so first you need to use the "x=4y+10" in the first equation.

Rewrite as

3(4y+10) +11y=7

Distribute the 3(4y+10)

Rewrite as

12y+30

You'll have the equation

12y +30 +11y= 7

Subtract the 7 from both sides

12y+30+11y-7= 0

Combine like terms

23y+23=0

the best thing to do here is divide the equation by 23.

23/23 = 1

you'll have

y + 1 = 0

this simplifies to

y= -1

use this y value to solve for x

the easiest way to do this is start with the equation

x = 4y +10

Substitute the y for -1

x = -4(-1) +10

x = 4 +10

x = 14

the solution point is

(14,-1)

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3 years ago
Draw two lines that are perpendicular. What type of angle is formed where the perpendicular lines intersect?
Vladimir79 [104]

a right angle (90 degrees)

4 0
3 years ago
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At a local health club, a researcher samples 75 people whose primary exercise is cardiovascular and 75 people whose primary exer
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Answer:

A

Step-by-step explanation:

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Step-by-step explanation:

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If you flipped two coins simultaneously, for a total of 24 times, how many times, on average, would you expect to get a head and
Bingel [31]

When two coins are flipped simultaneously 24 times, on average 12 times we will get a head and a tail.

For given question,

When two coins are tossed simultaneously, the sample space is as follows:

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Using the formula of probability,

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P(HT) = 1/4

and

P(TH) = 1/4

We know that the occurrence of two mutually exclusive events is the sum of their individual probabilities.

So, P(Head on one and Tail on other)

= P(HT) + P(TH)

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= 0.5

So, when two coins flipped simultaneously, the probability of flipping 2 coins and getting a head and a tail is 0.5

In this question, we need to find the number of times getting a head and a tail when two coins are flipped simultaneously 24 times

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Therefore, When two coins are flipped simultaneously 24 times, on average 12 times we will get a head and a tail.

Learn more about the probability here:

brainly.com/question/3679442

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