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Crazy boy [7]
3 years ago
8

If f(x) = x2 and g(x) =1/ 2x+3, find g(f(-1)).

Mathematics
1 answer:
Dvinal [7]3 years ago
5 0
-1=1/2x+3
2=1/2x
(2)2=1/2x(2)
4=x
Answer: x=4
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JK in the coordinate plane has endpoints with coordinates (-4, 11) and (8,
atroni [7]

Answer:

(0, 7)

Step-by-step explanation:

Given:

J(-4, 11)

K(8, -1)

JP:JK = 1/3

Required:

Coordinates of P

SOLUTION:

Use the formula, (x, y) = (x_1 + k(x_2 - x_1), y_1 + k(y_2 - y_1)) to find the coordinates of point P, that partition the segment JK into the ratio 1/3.

Let,

J(-4, 11) = (x_1, y_1)

K(8, -1) = (x_2, y_2)

k = \frac{1}{3}

Thus, plug in the values as follows:

P(x, y) = (-4 + \frac{1}{3}(8 -(-4)), 11 + \frac{1}{3}(-1 - 11)

P(x, y) = (-4 + \frac{1}{3}(12), 11 + \frac{1}{3}(-12)

P(x, y) = (-4 + \frac{12}{3}, 11 + \frac{-12}{3})

P(x, y) = (-4 + 4,  11 + (-4)

P(x, y) = (0, 7)

The coordinates of point P, are (0, 7)

3 0
3 years ago
If i have 20 bucks and i give 15 how much do i have now
KATRIN_1 [288]

Answer:

it's 5 because 20 -15 is 5

5 0
3 years ago
Read 2 more answers
Use the grouping method to factor this polynomial completely 3x^3+12x^2+2x+8
krok68 [10]

Answer:

(x+4)(3x^2 + 2)

Step-by-step explanation:

3x^3+12x^2+2x+8

3x^2(x + 4) + 2(x + 4)

(x+4)(3x^2 + 2)

3 0
2 years ago
A series of tile patterns is shown below. Consider the function that represents the number of white tiles in each figure. Figure
mr_godi [17]
No one can answer this there is no picture for me or anyone else to look at
7 0
3 years ago
Ms. Hartline grades one math test every 1⁄4 hour. How many math tests does she grade in 2 hours? HELP QUICK!!
vazorg [7]

Answer:

8 maths tests

Step-by-step explanation:

Given data

We are told that in 1/4 hour that is 0.25hour (15 mins) She grades 1 math test

our aim is to find how many maths test she grade in 3 hours (120min)

Hence

in  15 mins she does 1 grading

in 120 mins she does x

cross multiply

15x= 120

divide both sides by 15

x= 120/15

x= 8 maths test

Hence in 2 hours, she can grade 8 maths tests

4 0
2 years ago
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