F(x)=-x+4 and g(x)=-2x-3 solve for f(g(x)) x=2

Answers

Answer 1

Answer: input
f(g(x))=-(g(x))+4=
g(x)=-2x-3
so
if x=2
f(g(2))=-(g(2))+4
g(2)=-2(2)-3=-4-3=-7

f(g(2))=-(-7)+4=7+4=11

f(g(2))=11

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If √5 - x = 4,then x=
i need help on here how to solve it

Answers

Professor Dan Healy, one of my Engineering instructors back in prehistoric times, had a favorite way of showing us how to do this kind of problem ... I mean the kind that's incredibly easy, but your own fear gets in the way and convinces you that you can't handle it. Here is Prof. Healy's method.

For a few moments, call the square root of 5 by the name "cow".

cow - x = 4 . Solve this equation for 'x' :

Add 'x' to each side of the equation: cow = 4 + x

Subtract 4 from each side: cow - 4 = x

Now, we can put the real value back in place of 'cow' : √5 - 4 = x

That right there is a perfect solution. But If you absolutely need to
know the number, then grab your calculator:

√5 = 2.2361 (rounded)

x = √5 - 4 = 2.2361 - 4 = -1.7639 (rounded)

$\sqrt5-x=4\n x=\sqrt5-4$

What is 15 - 1/6n = 1/6n - 1

Answers

15-1/6n=1/6n-1
15+1=1/6n+1/6n
16=1+1/6n
16=2/6n
16=1/3n
16*3/1=n
therefore, n=48.........

Answer:

n=48

Step-by-step explanation:

The terminal speed for a person parachuting (with the chute open) is abouta. 0 km/h.
b. 15 km/h.
c. 150 km/h.
d. 1500 km/h.

Answers

The terminal speed for a person parachuting with the chute open is about
15 km/h.

Hope this helped! :)

It costs $4.25 for one pound of roast beef and $3.70 for one pound of ham. How much will it cost to purchase 2 pounds of roast beef and 3.5 pounds of ham?

Answers

11.45$ because u have to add the numbers up together

The formula for height, in feet of a projectile under the influence of gravity is given by h=-16t^2+vt+s, where t is the time in seconds, v is the upward velocity at the start, and s is the starting height. Marvin throws a baseball straight up into the air at 70 feet per second. The ball leaves his hand at a height of 5 feet. When does the ball reach a height of 75 feet?

Answers

Answer:

1.55s

Step-by-step explanation:

The height equation of the projectile is given as;

h = -16t^2 + vt + s .......1

where;

t is the time in seconds,

v is the upward velocity at the start,

s is the starting height.

Given;

v = 70 ft/s

s = 5 ft

Substituting the values equation 1 becomes;

h = -16t^2 + 70t + 5

For the ball to reach 75 ft, h = 0

75 = -16t^2 + 70t + 5

-16t^2 + 70t + 5 - 75 = 0

-16t^2 + 70t - 70 = 0

solving the quadratic equation;

Time t = 2.83 s and t = 1.55s

Therefore, the ball will first reach 75 ft after 1.55 seconds.

What's the reciprocal of 7/9? a.48/15 b.16/15 c.9/7 d.14/18 ?

Answers

The reciprocal of a/b is b/a

The reciprocal of 7/9 is 9/7

If you are given a mixed number like 1 2/3, then first convert it to an improper fraction using:
$a (b)/(c) = ((a* c) + b)/(c)$

And then you find the reciprocal of it.

Your answer is C. 9/7.

9/7 is the reciprocal of 7/9

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14.4% of 72.5 is what