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2 years ago

Find an expression which represents the sum of (6x-4)(6x−4) and (-2x+5)(−2x+5) in simplest terms

Mathematics

1 answer:

denpristay [2]2 years ago

7 0

Answer:

40x^2-68x+41

Step-by-step explanation:

Multiply both expressions

(-2x+5)^2= 4x^2-20x+25

(6x-4)^2=36x^2-48x+16

Then add

Use multiplication table if you have difficulty with multiplying

-2x 5

-2x 4x^2 -10x

5 -10x 25

Then add them all to get the full expression

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There are 2000 pounds in a ton how can you write 2000 with and exponent

Makovka662 [10]

In scientific notation, it would be 2x10^3.
An easy trick to help remember when it is a multiple of 10 is that you do the numbers that aren't zero (2) times 10 and the exponent is how ever many zeros there are after the other numbers (3).

3 0

2 years ago

Read 2 more answers

If f(x)=x-2 which of the following is the inverse of f(x) brainly

Lostsunrise [7]

Answer:

The inverse of f(x) is $f ^ {- 1}(x) = x + 2$

Step-by-step explanation:

To find the inverse of the function $f (x) = x-2$ , perform the following steps:

1) do $y = f (x)$

$y = x-2$

2) Solve the equation for the variable x.

$y + 2 = x -2 +2$

$y + 2 = x$

3) exchange the variable x with the variable y

$y + 2 = x$ ----> $x + 2 = y$

4) Change the variable y by $f ^{- 1}(x)$

Finally the inverse function is:

$f ^ {- 1} (x) = x + 2$

4 0

3 years ago

Solve for x. 3/5 x=9 What should we do first? Finish solving it and what do you get for x? A) 27/5 B) 30 c) 15

kumpel [21]

Answer:

c.) 15

Step-by-step explanation:

1st Multiply both sides by 5: 5×3/5x=9×5

2nd Simplify: 3x=45

3rd Divide both sides by 3: 3x÷3=45÷3

4th Simplify: x=15

3 0

3 years ago

The selling price of a certain video is $7.00 more than the price the store paid. If the selling price is $24.00, find the price

Ann [662]

The store paid $17.00

Solution: $24.00 (selling price) - $7.00 (difference of what the store paid) = $17.00

8 0

2 years ago

(-6,8); perpendicular to y = -3/2x -1

UNO [17]

Answer:

$y = \frac{2}{3} x + 12$

Step-by-step explanation:

$y = - \frac{3}{2} x - 1$

The gradient of a line is the coefficient of x when the equation of the line is written in the form of y=mx+c.

Thus, gradient of given line= $- \frac{3}{2}$ .

The product of the gradients of perpendicular lines is -1.

(Gradient of line)(-3/2)= -1

Gradient of line

$- 1 \div ( - \frac{3}{2} ) \\ = - 1( - \frac{2}{3} ) \\ = \frac{2}{3}$

Substitute m= $\frac{2}{3}$ into y=mx+c:

$y = \frac{2}{3} x + c$

To find the value of c, substitute a pair of coordinates.

When x= -6, y= 8,

$8 = \frac{2}{3} ( - 6) + c \\ \\ 8 = - 4 + c \\ c = 8 + 4 \\ c = 12$

Thus, the equation of the line is $y = \frac{2}{3} x + 12$ .

7 0

3 years ago