if f(x)=2x^2-10, find f(-3)

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression. Hope this helps! :)

Please give Brainiest.

Answer:

First, subtract the budgeted amount from the actual expense. If this expense was over budget, then the result will be positive. Next, divide that number by the original budgeted amount and then multiply the result by 100 to get the percentage over budget.

I hope that helps.

Answer:

5x + 10 = 5(11 - 2x)

5x + 10 = 55 - 10x

5x + 10x = 55 - 10

15x = 45

15x ÷ 15 = 45 ÷ 15

x = 3

so the answer is 3

Answer:

√110

Step-by-step explanation:

The multiplication of the numbers √2, √5, and √11 is √110 after applying arithmetic operation.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.

It is given that:

The number expression is:

=  √2. √5 . √11

From the definition of the arithmetic operation, the operation in which we do the addition of numbers, subtraction, multiplication, and division.

= √(2x5x11)

=  √110

Thus, the multiplication of the numbers √2, √5, and √11 is √110 after applying arithmetic operation.

Learn more about the arithmetic operation here:

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Answer:

THE Answer Is NO

i hope this will help to you

9514 1404 393

Answer:

  a) take it back to the author for clarification

  b) use a graphing calculator

  c) mark known points and draw the curve

Step-by-step explanation:

In the normal course of interpreting an algebraic expression, the evaluation of functions generally takes precedence over other operations. Here, that means this should be interpreted as ...

  3·sin(1/2)·(x-1) +5

This is a (somewhat unusual) linear equation. It can be graphed by evaluating it for a couple of different x-values and drawing a line through the result. The first attachment shows a table of values and a graph of the line. (The slope of the line is an irrational value near 1.4382766 ≈ 105/73.)

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It is common in Algebra studies to look at scaled and shifted versions of different functions. An alternative interpretation of the given expression would locate parentheses so that the sine function argument is clear:

  [tex]y=3\sin{\left(\dfrac{1}{2}(x-1)\right)}+5[/tex]

This is the equation of a sine function vertically expanded by a factor of 3, vertically shifted by 5 units, horizontally expanded by a factor of 2, and horizontally shifted by 1 unit.

This can be graphed a couple of ways.

Relabel Axes

A way to do it is to draw a sine function (amplitude 1, period 2π, no vertical or horizontal shift), then relabel the axes so the function center-line is at y=5, the peak values are at +3 and -3 from that line, the period is 4π, and the whole graph is shifted right so the first upward center-line crossing is at x=1.

Choose Points

Perhaps an expected way to graph the function is to choose several values for x, find the corresponding y-values, and draw the curve through the points.

Recompute Points

Rather than relabel the axes or choosing random points, you could start with an (x, y) table of sine function values, then "adjust" those values as follows:

  each x-value: multiply by 2 and add 1

  each y-value: multiply by 3 and add 5

Plot the "adjusted" value pairs, and draw a curve through them. See the second attachment for a graph.

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Comment on graphing

My preference for graphing anything that involves an electronically transmitted result or any detailed calculation is to use "technology". My current preference is a graphing calculator. Spreadsheet programs can also do a decent job of graphing, given enough points to work with.

Answer:

A.

Step-by-step explanation:

Step 1: Write equation

x² - 8x = 3

Step 2: Solve for x

Answer:

A

Step-by-step explanation:

because when doing these equations it is the same except one is positive and one is negative

Answer: it would take her 15 hours to read 400 pages

Step-by-step explanation: 400 devided by 80 is 5 and 5 x 3 = 15 hours

Answer: 15 hours to read 400 pages

Answer:

X=3

Step-by-step explanation:

Answer:

400,000

Step-by-step explanation:

the line from smallest up goes, 1's, 10's, 100's, 1000's, 10,000's, 100,00's, and 1,000,000's

Answer:

Jar 4

Step-by-step explanation:

Jar 4 it has to be 20 charc

Answer:

y=8

Step-by-step explanation:

Answer:

Step-by-step explanation:

it's easier b or d I'm not sure

Answer:  

It would be D

Step-by-step explanation:

Answer:

24,000

Step-by-step explanation:

4,000 x 6

4,000 each month for 6 months

4,000 + 4,000 + 4,000 + 4,000 + 4,000 + 4,000

4,000 six times

Answer:-1/3b+18

Step-by-step explanation:

Let's solve for a.

3a+b=54

Step 1: Add -b to both sides.

3a+b+−b=54+−b

3a=−b+54

Step 2: Divide both sides by 3.

3a/3=  -b+54

               3

a= -1/3b+18

Answer:

a 15

Step-by-step explanation:

just got it right

Answer:

I/rt = P

Step-by-step explanation:

I = Prt

Divide both sides by rt to isolate P

I/rt = P

==========================================================

Work Shown:

x = first number

x+1 = second number

x+2 = third number

x+3 = fourth number

x+4 = fifth number

Note how the numbers are one after another. Consecutive numbers follow this pattern. For example: 6,7,8,9,10 are consecutive numbers. One number follows right after the other.

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Add up those five expressions. Set the sum equal to 70 and solve for x

(x)+(x+1)+(x+2)+(x+3)+(x+4) = 70

(x+x+x+x+x)+(1+2+3+4) = 70

5x+10 = 70

5x = 70-10

5x = 60

x = 60/5

x = 12 is the first number and the smallest number

x+1 = 12+1 = 13 is the second number

x+2 = 12+2 = 14 is the third number

x+3 = 12+3 = 15 is the fourth number

x+4 = 12+4 = 16 is the fifth number

Check:

12+13+14+15+16 = 70

which confirms our answer

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You could use a guess and check method, but the algebraic approach is much more efficient.

Answer:

x-31(Greater than or equal to)66 -->x(greater than or equal to)97

Step-by-step explanation:

SHe wants to make a profit of 66, but with 31 bucks in expenses, this would need the revenue to be greater than 97 to cover the expenses and still make the profit

Answer:

b=11

Step-by-step explanation:

Answer:

4x-11

Step-by-step explanation:

open parentheses: 4x-8-3

solve: 4x-11

Answer:

78900

Step-by-step explanation:

Answer:

Step-by-step explanation:

if x = -4

-5x = -5 * -4 = 20

Answer:

Step-by-step explanation:

$25.50 divided by $8.50 = 3

So they can ride the paddle boat for an hour and 30 minutes

Answer:

-4.5*(b-3)=

-4.5*b-4.5*(-3)=

-4.5b+13.5

Answer:

20q-5w+5e+15r-15

Step-by-step explanation:

Just multiply 5 by all those variables and then combine lile terms! (P. S -remember - and + equals -)

Answer:

distribution

5

+

2

0

+

1

5

−

5

−

1

5

Answer:

1.) X = 1     2.) X = 7

Step-by-step explanation:

1.) 3x - 6 = 9

Subtract 6 on both sides

3x = 3

Divided 3 on both sides

X = 1

2.) -5x + 3x = 11 + 3

Put the like terms on both sides

-2x = 14

Divide both sides by 2

X = 7

Answer:

24x^2 -10x - 25

Step-by-step explanation:

24x^2 + 20x - 30x - 25

24^2 -10x - 25

Answer:

Simplifying

4x + -5 = 6x + 5

Reorder the terms:

-5 + 4x = 6x + 5

Reorder the terms:

-5 + 4x = 5 + 6x

Solving

-5 + 4x = 5 + 6x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6x' to each side of the equation.

-5 + 4x + -6x = 5 + 6x + -6x

Combine like terms: 4x + -6x = -2x

-5 + -2x = 5 + 6x + -6x

Combine like terms: 6x + -6x = 0

-5 + -2x = 5 + 0

-5 + -2x = 5

Add '5' to each side of the equation.

-5 + 5 + -2x = 5 + 5

Combine like terms: -5 + 5 = 0

0 + -2x = 5 + 5

-2x = 5 + 5

Combine like terms: 5 + 5 = 10

-2x = 10

Divide each side by '-2'.

x = -5

Simplifying

x = -5

Step-by-step explanation: