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skelet666 [1.2K]
2 years ago
15

I add 7 to a certain number.i double the result.my final results is 34. What was my number?

Mathematics
2 answers:
anzhelika [568]2 years ago
6 0

Step-by-step explanation:

(x plus 7) times 2 is 34

34 divide by 2 is 17

17 minus 7 is 10

answer is 10

you reverse everything so times is divide and plus is minus.

You have to do it in order though.

Umnica [9.8K]2 years ago
4 0

Answer:

your number is <u>10</u>

Step-by-step explanation:

this equation repressents the problm;

2(7+x) = 34

distribute

14 + 2x = 34

subtract 14 both sids

2x = 20

divide by 2

x = 10

your number is 10

confirm

2(7 + 10 ) = 34

2(17) = 34

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Which of these is an exponential parent function?  A. f(x) = 2^x – 3  B. f(x) = 2^x + 2  C. f(x) = 2^x  D. f(x) = 2^x + 1/3
anygoal [31]

An exponential parent function is the option C. f(x)= 2^{x}, from the given options.

What do you mean by exponential parent function?

The formula for their parent function is y = b^{x}, where b is any non zero constant. Below is a graph of the parent function, y = e^{x}, which demonstrates that it will never equal 0. And at y = 1 when x = 0, y crosses the y-axis.

According to options in the given question,

We have the option below in the given question:

A. f(x) = 2^x – 3 

B. f(x) = 2^x + 2 

C. f(x) = 2^x 

D. f(x) = 2^x + 1/3

We know from the above definition that the option C. is the right answer to the given question.

Therefore, the exponential parent function is f(x)= 2^{x}.

To learn more about exponential parent function, visit:

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4 0
1 year ago
Someone help me with this
qwelly [4]

Answer:

D

Step-by-step explanation:

there are 9 digits.

and round it off to the nearest hundred million which is 3.

There are 8 digits before the 3... so 10 gets to the power of 8.___ 10⁸

3,0×10⁸ m.s^-1

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2 years ago
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VMariaS [17]
For what are you trying to figure out?
7 0
3 years ago
TWO QUESTIONS PLS HELP ASAP
ASHA 777 [7]
Answer: 4. (-1,-1) 3. (3,-2)

4)

Set the equations equal to each other.

4x+3=-x-2

Subtract 3 from both sides

4x=-x-5

Add x to both sides

5x=-5

Divide both sides by 5

x=-1

Next, replace x with -1 in either equation to find y.

-(-1)-2=y

-1=y


3)

Do the same thing for this one and set them equal to each other

-2x+4=-1/3x-1

Add 1 to both sides

-2x+5=-1/3x

Add 2x to both sides

5=5/3x

Divide both sides by 5/3

x=3

Next, replace x with 3 in either equation

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4 0
3 years ago
Enzel goes online to buy a graphing calculator. He finds a site that currently has a promotion of 15% off on all orders over $50
Sonbull [250]

Based on the cost of the calculator, the discount, the shipping fee, and the tax, the total cost of the purchase was<u> a. $80.07</u>

The cost of the calculator was:

<em>= Cost of calculator x ( 1  - discount)</em>

= 83 x ( 1 - 15%)

= $70.55

The sales tax would be:

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The total cost would be:

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= 70.55 + 3.17 + 6.35

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In conclusion, the total is $80.07.

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