Which equation is the inverse of y = 7x2 – 10?

Answers

Answer 1
Answer:

we have

y=7x^(2)-10

To find the inverse

Step 1

Exchanges the variables, x for y and y for x

x=7y^(2)-10

Step 2

Isolate the variable y

x=7y^(2)-10

7y^(2)=x+10

y^(2)= (x+10)/(7)

Square Root both sides

y=(+/-)\sqrt{(x+10)/(7)}

Step 3

Let

f(x)^(-1)=y

so

f(x)^(-1)=(+/-)\sqrt{(x+10)/(7)}

therefore

the answer is

The inverse is  

f(x)^(-1)=(+/-)\sqrt{(x+10)/(7)}

Answer 2
Answer:

Answer:

It's B

Step-by-step explanation:

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If c = the number of cars in a parking lot, which algebraic expression represents the phrase below? the number of cars increased by 9

Answers

The answer is:
c + 9.
This is because c is the number of cars. If you increase, you are adding. So you are adding 9 to the number you have in the parking lot. This makes your answer c + 9.

Answer: c+9

Step-by-step explanation:

just took the test <3

N=480×10^9
Write N as a product of powers of its prime factors.

Answers

N = 5^(10) × 2^(14) × 3

This is about prime factors

By definition, a prime factor is a factor of a number and that factor is also a prime number.

A prime number is one that is divisible by only itself and 1.

The number we have is; 480 × 10^(9)

Now, let's list the prime factors or 480 and they are;

2, 3, 5

Now, using these prime factors alone to get 480, we have;

5 × 3 × 2 × 2 × 2 × 2 × 2 = 480

In powers, gives;

5 × 3 × 2^(5)

Now,the 10^(9) with the 480 can also be expressed in terms of it's prime factors which are 2 and 5 as;

(5 × 2)^(9)

Expanding this gives; 5^(9) × 2^(9) = 10^(9)

Thus;

480 × 10^(9) = 5 × 3 × 2^(5) × 5^(9) × 2^(9)

This gives;

5^(10) × 2^(14) × 3

Read more at; brainly.com/question/4853862

Answer:

I got 5^10 x 2^14 x 3

Step-by-step explanation:

1. Do a tree to find 480 as a product of its prime factors

2. You should get 480= 5x2x3x2x2x2x2

3. 10 expressed as a product of its prime factors is 5x2

4. so 10^9 expressed as a product of its prime factors would be

5x2x5x2x5x2x5x2x5x2x5x2x5x2x5x2x5x2

5. You can then write out 480x10^9 as a product of its prime factors

5x2x3x2x2x2x2x5x2x5x2x5x2x5x2x5x2x5x2x5x2x5x2x5x2

6. change this to use powers

5^10 x 2^14 x 3

Find the value of Z in the following equation: 8Z = 64.a. 72
B. 8
C. 512
D. 56

Answers

The requried simplified value of z is given as z = 8. Option B is correct.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,

Given expression,
8z = 64
divide both sides by 8
8z / 8= 64 /8
z = 8

Thus, the requried simplified value of z is given as z = 8. Option B is correct.

Learn more about simplification here:

brainly.com/question/12501526

#SPJ2

8Z = 64

Divide both sides by 8.

8Z/8 = 64/8

Z = 64/8

Z = 8


Your final answer is B. 8.

Find the value of 9 - [4^2 - (3 + 2)].

Answers

9 - [4^2 - (3 + 2)].
9 - [16 - (5) ]
9 - [16-5 ]
9 - [11]
9 - 11
= -2

In short, Your Answer would be -2

Hope this helps!
it would be -2 I could be wroung

Factor 3d^2 - d - 24

Answers

Using the AC method for factoring.....

you should get the answer of...

(3d+8)(d-3)

Determine whether the following pairs of lines are parallel,perpendicular,or neither. y=2x+1 2x+y=7

Answers


In order to answer this one, you have to remember:

--> Parallel lines have equal slopes.

--> Perpendicular lines have negative reciprocal slopes.

                       (One slope  =  - [ 1/the other slope ]

The question gives us two lines:

#1).  y = 2x + 1
#2).  2x + y = 7

The first equation is in nice slope-intercept form, and we can see
right away that the slope of its graph is  2 .

The second equation is not in slope-intercept form, so we need to
massage it slightly before we can spot the slope of its graph.

                                            2x + y =          7

Subtract  2x  from each side:      y = -2x + 7 .  <== slope-intercept form.
                                                                                Slope = -2 .
Now we know both slopes.

#1).  Slope =  2
#2).  Slope = -2

Are the slopes equal ?  I don't think so.  2  is not equal to  -2 .
The lines are not parallel. 

Are the slopes negative reciprocals ?  I don't think so. 
2 is not equal to  -[ 1/(-2) ].
The lines are not perpendicular.