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3 years ago

Help please, and explain(step-by-step) how the answer would be correct.

Mathematics

1 answer:

vekshin13 years ago

8 0

When a function is reflected, it must be reflected over a line

The new function is: $y = |4 -x| -8$

The equation is given as:

$y = |x + 4| - 8$

The rule of reflection over the y-axis is:

$(x,y) \to (-x,y)$

So, we have:

$y = |-x + 4| -8$

Rewrite as:

$y = |4 -x| -8$

Hence, the new function is:

$y = |4 -x| -8$

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Please help! i'm not really good at these, thank u sm if u help!

Archy [21]

Answer:

Correct: a, b, c, d, f, g, h, i, l

Incorrect: e, j, k

Step-by-step explanation:

a. -120=60(-2) {insert x and y into the equation and see if it works} Correct

b. 60 is being multiplied by hours, so it is the mph Correct

c. 60 is always the one being multiplied, so it's the constant Correct

d. 210=60(3.5) {insert 3.5 as x [cause hours] and see if it equals 210 [it does]} Correct

e. y is the dependent variable, and it represent miles driven Incorrect

f. Direct variation equation is y=kx {in the equation, k=60} Correct

g. x is the independent variable, and it represents the hours driven Correct

h. The x and the y are proportional Correct

i. y is the dependent variable, and it represent miles driven Correct

j. y is the dependent variable, and it represent miles driven Incorrect

k. Rise=y Run=x The first point would be (1,60) {rise=60 run=1} Incorrect

l. (0,0) is a solution, and it is also the y-intercept Correct

(hope this helps :P)

8 0

3 years ago

What is the relationship between the 6s in 660,472

Misha Larkins [42]

600,000 and 60,000 I do believe.

7 0

3 years ago

Read 2 more answers

Select the correct answer.

ziro4ka [17]

Answer:

A function only

Step-by-step explanation:

This situation represents a function only. Air pressure is the independent (input) variable and the weight of the candy dispensed is the dependent variabe:

weight = 3(pressure on the lever)

This has the form of a function, as well as of a direct proportion.

6 0

3 years ago

The height of a triangular road sign is 1 inch shorter than twice its base. if the area of the sign is 60 in.2, which equation c

Gnom [1K]

Comment
We should try the very simplest way of finding triangular areas first.

Formula
A = 1/2 b * h

Substitute
Area = 60 in^2
b = x
h = 2x - 1
60= 1/2 * x * (2x - 1)

Solve
60 = 1/2 * x (2x - 1) Multiply by 2
60 * 2 = x(2x - 1)
120 = x (2x - 1) Remove the brackets.
120 = 2x^2 - x Subtract 120 from both sides.
2x^2 - x - 120 = 0 This factors.
(2x + 15)(x - 8) = 0

Solve for x
2x + 15 = 0
2x = - 15
x = -15/2
x = - 7.5 a negative measurement is useless. Discard this answer.

x - 8 = 0
x = 8

Area (Check)
base = 8
height = 16 - 1 = 15

Area = 1/2 * 8 * 15 = 60 as it should

Answer
Use Area = 1/2 * b * h to find the base and the height.

6 0

4 years ago

Will give brainliest to correct answer!!

Slav-nsk [51]

Answer:

x = -5/6

Step-by-step explanation:

Since it is on the unit circle

x^2 + ( -sqrt(11)/6)^2 = 1 ^2 (pythagorean theorem)

x^2 = 1 - 11/36

x^2 = 25 /36

x = +-5/6 since x is in Q III it is the negative

4 0

2 years ago