What is the value of the expression (x – 2y)(x + 2y) when x= 4 and y = 2?

Answers

Answer 1

Answer:

0

Step-by-step explanation:

To solve this, you first plug in the 4 and 2 where the x and y's go, making the expression (4 - 2(2))*(4 + 2(2)). Then you solve each parenthesis (below).

(4 - 2(2))*(4 + 2(2)).

(4 - 4)*(4 + 4).

0*8

0

Hope this helped! If you have any questions, feel free to message me :)


Related Questions

the amount of money rachel earns varies directly with the number of hours she works. if sue earns $600 when she works 40 hours , how much will she earn for working 85 hours ?

Answers

Answer:

I think 500

Step-by-step explanation:

600 minus 40 mminus 85

1,275
Explanation : If she earns 600 dollars working for 40 hours, you can find the amount she earns working an hour by dividing 600/40 which will give you $15 an hour. From there it asks how much will she earn working 85 hours, so you multiply $15 by the 85 hours so you get 1,275

Which property of real numbers is shown below?
3+ ((-5) + 6) = (3 + (-5)) + 6
commutative property of addition
identity property of multiplication
associative property of addition
commutative property of multiplication

Answers

Answer:

the answer is associative property of addition

Step-by-step explanation:

the things is no matter how you switch out the numbers you will have the same income.

Answer:

If I am not mistaking it would be identity property sorry if I am wrong

Step-by-step explanation:

May I please have brainly i will almost finish my circle for brainlys please

f(x) = 8x - 11

f(9) =

Answers

Answer:

61

Step-by-step explanation:

hi! we can start off by plugging in the number 9 for x in the equation.

f(x)=8x-11)

f(9)= 8(9)-11

= 72-11

=61

hope this helps.

The answer is 61.

Replace the x in the equation with the nine. F(9) = 8(9) - 11

Now first multiply 8 x 9 which is 72

Now you have F(9) = 72 - 11
Subtract the two numbers.

F(9) = 61

Please help me it would mean a lot

Answers

Problem 10

Answer: 80 degrees

Work Shown: 80-0 = 80

You subtract the values on the protractor where the two angle arms line up.

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

Problem 11

Answer: 45 degrees

Work Shown: 45-0 = 45

Same idea as problem 10

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

Problem 12

Answer: 83 degrees

Work Shown: 128-45 = 83

Same idea as the others. The arm TS isn't fully on 130 degrees, and it's a bit short of it. It looks to be about 128 degrees or so.

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

Problem 13

Answer:  35 degrees

Explanation: Luis forgot to subtract the value of each arm of the angle. So he should have done 80-45 = 35. The answer would be 80 degrees if arm TQ was at 0 degrees (so 80-0 = 80), but instead TQ is at 45 degrees.

How do I do this I tried and still don’t get it

Answers

Answer:

y=0

y=2

y=4

y=6

y=8

next your y's is

0

1

2

3

4

Your x,y is

0,0

1,2

2,4

3,6

4,8

Explanation

So for each X you must multiply by 2

to find your Y

Suppose that you plan on taking a dimmer job selling magazine subscriptions. The magazine company will pay you $1.25 for selling the first subscription. For each additional subscription sold, the magazine company will pay you 5 cents more than what was paid for the previous subscription. How much will you earn by selling 225 magazine subscriptions?

Answers

Answer:

$1243.75

Step-by-step explanation:

Hope it helps :)

Brainliest pls? Have a good day/night

100 POINTS!!!!!!!!!!! ( I NEED FAST ANSWERS ) The slope of the line through the points (8,4) and (6.5) is 2.*
False
True

Answers

Answer:

False

Step-by-step explanation:

The slope of that line is -1/2

False

The slope of the line is actually -.05

I would have explained this further but u need it fast so..

My Instagram just got disabled how do I recover it today or by tomorrow?? Help pls

Answers

Answer:

I would call them and ask for the manager lowkey!

Step-by-step explanation:

❤❤

Answer:

Of course today

Step-by-step explanation:

Answer the following above:

Answers

Answer:

-3.25

Step-by-step explanation:

Just multiply -0.5 and 6.5.


Find the greatest common factor (GCF) for 18, 27 and 54.

Answers

Answer:

9

Step-by-step explanation:

21. Susan traveled 114 miles in 2 hours. If she keeps going at the same rate, how long will it take her to go the remaining 285 miles of her trip?
a. 5 hours
b. 3 hours
c. 7 hours
d. 4 hours

Answers

5 hours because 114/2 is 57 which means it’s 57 miles per hour. so 57x5 is 285

Type the correct answer in the box,
One solution to a quadratic equation is x = 1 + 8i. What is the other solution?

Answers

We'll assume the quadratic equation has real coefficients

Answer:

The other solution is x=1-8i.

Step-by-step explanation:

The Complex Conjugate Root Theorem

if P(x) is a polynomial in x with real coefficients, and a + bi is a root of P(x) with a and b real numbers, then its complex conjugate a − bi is also a root of P(x).

The question does not specify if the quadratic equation has real coefficients, but we will assume that.

Given x=1+8i is one solution of the equation, the complex conjugate root theorem guarantees that the other solution must be x=1-8i.

Answer:

the answer would be x= 1-8i

Step-by-step explanation:

plato said so

Lisa and her date spent $87.70. They want to leave a 20% tip. What amount would be reasonable for the tip?​

Answers

Answer:

17.54 would be tip so reasonable would be 20$

Step-by-step explanation:


Identify the slope and y-intercept from the following equation.

Answers

Answer:

The slope is 2/5 and the y intercept is -4

Step-by-step explanation:

The slope is always the coefficient to x

Answer:

slope = [tex]\frac{2}{5}[/tex] , y- intercept = - 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = [tex]\frac{2}{5}[/tex] x - 4 ← is in slope- intercept form

with slope m = [tex]\frac{2}{5}[/tex] and y- intercept c = - 4

In the transformed quadratic function
vertex point is
g(x) = 3(x – 5)2 - 4 , the
O (5, 4)
O (3, -4)
o (-5, -4)
(5,-4)

Answers

Answer:

            (5, -4)

Step-by-step explanation:

f(x) = a(x - h)² + k        ← the vertex form of quadratic function where vertex is: (h, k)

[tex]\left{\big{f(x)=a(x-h)^2+k}\atop \big{g(x)=3(x-5)^2-4}\right\}\implies a=3\,,\ \underline{h=5\,,\ k=-4}[/tex]

NEED HELP ASAP PLEASE

Answers

It’s the second answer
<1=58 <2=122 <3=58

Quincy needs 322 yards of ribbon to decorate quilts for a craft fair. The ribbon comes in rolls of 15 yards. Alice needs twice as many yards of ribbon as Quincy. How many rolls of ribbon does Alice need? Explain your answer.

Answers

Answer:

The answer is 35

Use the drop-down menus to complete each statement.

The function
has the same amplitude as the function y = cos(x – 4) + 1.

The function
is a translation of the parent cosine function.

Answers

Answer: the function y = cos(2x) - 2 and the function y = cos(x) - 3

Step-by-step explanation: just took it

Function [tex]y=cos2(x)-2[/tex] and function [tex]y=cos(x)-3[/tex].

Function:A function in mathematics from a set [tex]x[/tex] to a set [tex]y[/tex] allocates exactly one element  [tex]y[/tex] to each element [tex]x[/tex]. The sets [tex]x[/tex] and [tex]y[/tex] are collectively referred to as the function's domain and codomain, respectively.Initially, functions represented the idealized relationship between two changing quantities. A planet's position, for instance, depends on time. In the past, the idea was developed with the infinitesimal calculus at the end of the 17th century, and the functions that were taken into consideration until the 19th century were differentiable (that is, they had a high degree of regularity).Solution -

The function which has the same amplitude as the function [tex]y=cos(x-4)+1[/tex] and is the translation of the parent cosine is as follows:

[tex]y=cos2(x)-2[/tex][tex]y=cos(x)-3[/tex]

Therefore, function [tex]y=cos2(x)-2[/tex] , and function [tex]y=cos(x)-3[/tex].

Know more about the functions here:

https://brainly.com/question/2833285

#SPJ2

(9+2).0 = 0
Is it commutative, associative, identity ,inverse, property of zero, distributive

Answers

Answer:

The property used will be property of zero.

Step-by-step explanation:

If an equation or expression ever equals zero, then it will be property of zero.

solve for the indicated variable. e=f-g for g

Answers

Answer:

g = f - e

Step-by-step explanation:

f - g = e

- g = e - f

g. = f - e

A bakery baked 16 cakes using 40 pounds of sugar. For each cake,... pounds of sugar was used

Answers

Answer:

2.5 pounds or sugar for each cake

Step-by-step explanation:

40/16=2.5

2.5 pounds of sugar was used

What is the slope of a line segment with endpoints at (-1,1) and (1,5)?

O undefined

O 4.

O 0.5

O 2

Answers

The answer is 2 use the x1 x2 over y1 y2 formula

What is the coefficient

Answers

Answer:

5, the one with the variable.

is the coeficiant

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

The coefficient is always before the variable. It's always going to be a number.

what is the opposite of −(−6.3)

Answers

Answer:

the reicprocal is -1/6.3

Step-by-step explanation:

HELP ILL GIVE U BRAINLEST!!

Answers

Answer:

19/24

Step-by-step explanation:

how do you solve this pls help!!!​

Answers

Answer:

y = 1

x = -0.75

Step-by-step explanation:

The alternate angles theorem states that if two parallel lines are cut by a transversal, then each pair of alternate interior angles are equal.

21y - 1 = 4x + 23

21y - 24 = 4x

5.25y - 6 = x

21y - 1 = 4x + 23

21y = 4x + 24

y = 4/21(5.25 - 6) + 1.14

y = 1 - 1.14 + 1.14

y = 1

5.25(1) - 6 = x

-0.75 = x

Assessment
MULTIPLE CHOICE
Directions: Read and answer the questions carefully. Write th
your Mathematics notebook.
1. Which of the following is a well - defined set?
A. The set of big people.
B. The set of happy people.
C. The set of prime numbers.
D. The set of intelligent teachers.​

Answers

Answer:

C. The set of prime numbers.

Thank you ☺️

standard form of y=-3/2+7

Answers

Answer:

2y=11

Step-by-step explanation:

Help please I need this now

Answers

Answer:

what is the question i cat help without the question

Step-by-step explanation:

Answer:

The answer for this is 850 dollars

Step-by-step explanation:

Since D stand for 50

You would do 50 X 17

Resulting in 850 dollars

simplify the expression
d + 3cd – 7c + 3cd + 2c

Answers

Answer:

=6cd−5c+d

Step-by-step explanation:

Answer:

d + 6cd - 5c

Step-by-step explanation:

d + 3cd + 3cd + 2c - 7c = d + 6cd - 5c

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