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larisa [96]
3 years ago
6

If you have 7x^2 + 3 if the input is 4 what is the output

Mathematics
2 answers:
schepotkina [342]3 years ago
8 0
7x^2 + 3   x=4 

A Power is a short way to represent repeated multiplication. The power includes a base and an exponent. The base is the number that is multiplied. The exponent is the number of times the base is multiplied.


 <span>Note: The power of a negative base is positive if the exponent is even, and negative if the exponent is odd.</span><span>  </span><span> </span>


7(4)^2 + 3  substitute \ 4 \ for \ x 

 7*16+3&#10;&#10; &#10;  Simplify \ 4^2 \ to \ 16 

&#10;&#10;112+3&#10; &#10; 

=&#10;115&#10; &#10;
Usimov [2.4K]3 years ago
5 0
7x^2 + 3
7(4)^2 + 3
7(16) + 3
112 + 3
115.
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Which graph can be used to find the solution(s) to x ^ 2 - 1 = x + 1 ?
NikAS [45]

Step-by-step explanation:

Step 1 - Separate LHS and RHS of the given polynomial.

--- (1)

y = x + 1 --- (2)

Step 2 - Draw the graph of a line (y = x + 1) that passes through the points (-1,0) and (0,1).

Step 3 - Now, draw the graph of the equation (1). The shape of this graph is the upward parabola.

Step 4 - The two graphs intersect each other at (-1,0) and (2,3).

From the above steps, it can be concluded that the correct option is C).

8 0
2 years ago
Each pair of polygons is similar. Find each missing side measure. two polygons 12 on top 5 on bottom second polygon 48 on top x
Firlakuza [10]

Answer:

x = 20

Step-by-step explanation:

Given

First Polygon:

Top = 12

Bottom =5

Second Polygon

Top = 48

Bottom =x

Required

Find x

Since both polygons are similar, then:

Ratio = Top:Bottom

For the first:

Ratio = 12:5

For the second

Ratio = 48:x

Equate both ratios

12:5 = 48:x

Express as fraction

\frac{12}{5} = \frac{48}{x}

Cross Multiply

12 * x = 48 * 5

Solve for x

x = \frac{48 * 5}{12}

x = \frac{240}{12}

x = 20

4 0
3 years ago
A researcher measures daily driving distance from college and weekly cost of gas for a group of commuting college students. What
juin [17]

Answer:

There is a positive correlation between these two variables.

Step-by-step explanation:

Positive correlation is an association amid two variables in which both variables change in the same direction.  

A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.

As the distance covered by the vehicle increases the amount of gas consumed also increases. Thus, the weekly cost of gas will also increase.

Thus, there is a positive correlation between these two variables.

6 0
4 years ago
(financial math) Elementary and Secondary Education is paid mostly from:
skelet666 [1.2K]

State taxes.

According to Urban dot org, school funding is a blend of federal, state, and local dollars.

State taxes are more likely to be correct due to education being the state's responsibility.

<em>If this is incorrect, please, don't refrain to tell me. Thank you. </em>

7 0
3 years ago
Erin is buying a tv with an original price of 650. She receives a 20% discount. How much will Erin pay, before tax, for the TV
r-ruslan [8.4K]

Answer:

$520

Step-by-step explanation:

20%

=0.2

0.2*650

=130

650-130

=520

5 0
3 years ago
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