MATHEMATICS MIDDLE SCHOOL

If F(x)= 2x and G(x) = log x, find F[G(x)]
A. 2logx
B. log2x
C. 2xlogx

Answers

Answer 1
Answer:

put g(x) in for x everywhere in f(x)

f(x) = 2x

f(g(x)) = 2g(x)

f(g(x) = 2(log(x))

Choice A

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What is the x-intercept of the line with the equation -2x+1/2y=18

Answers


The x-intercept is a point on the x-axis.
y=0 at every point on the x-axis.

                                       -2x + 1/2(0) = 18

                                       -2x              =  18

Divide each side by  -2 :    x = -9

1) A 1.5 kg apple pie is sitting on the kitchen counter . If it has 13.44 J of gravitational potential energy, how tall is the counter it sits on?2) A suitcase weighing 120 N sits on a counter 1.8 m high in the airport. How much energy does it have?

plsss answer 1&2

Answers

So the equation you’ll use for both is
WP = mg • h
It’s delta height generally.

1.) .9 m = h

2.) 216 = WP

I would’ve sent a screenshot, but the app wouldn’t let me.

if (1,4) and (10,-68) are two anchor points on the trend line, then find the equation of the line y=[?]x + [ ]

Answers

Answer:

y = - 8x + 12

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (1, 4) and (x₂, y₂ ) = (10, - 68)

m = (-68-4)/(10-1) = (-72)/(9) = - 8, thus

y = - 8x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (1, 4), then

4 = - 8 + c ⇒ c = 4 + 8 = 12

y = - 8x + 12 ← equation of line

Jr shaded 3/5 of a rectangle. Mary shaded 4/12 of a congruent rectangle. who shaded more? how do you know

Answers

well 3/5 = 0.60 in decimal form
and 4/12 when simplified is 1/3 which is .33 in decimal form 
so jr shaded more.
Mary did she paid 0.33 or 1/3

jon has 12 pennies. lucy has 17 pennies. how many more pennies do they need to have 75 pennies altogether.

Answers

12+17=29 so 75-29=46 so they need 46 more

What is the inverse function of F(x) = -3/2x - 8

Answers

Answer:

f-1(x)=-(2)/(3)x-(16)/(3)

Step-by-step explanation:

First, switch f(x) to the variable "y".

y=-(3)/(2)x-8

Next, swap "x" and "y" with each other.

x=-(3)/(2)y-8

Next, lets move the denominator of 2 to the other side by multiplying both sides by 2. Your result will be...

2x=-3y-16

Now move -16 to the left side.

16+2x=-3y

To get "y" by itself, lets divide each side by -3. Our result is...

y=-(2)/(3)x-(16)/(3)

To finish the problem off, replace y with f-1(x) and your complete answer will be...

f-1(x)=-(2)/(3)x-(16)/(3)
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