Evaluate the following expression when x = -1, y = 2, z = -3, and
w = 4.
x² - y²

Answers

Answer 1

Answer:

-3

Step-by-step explanation:

-1*-1=1

2*2=4

1-4

=-3


Related Questions

Find the equation of the line that is parallel to the given line and passes through the given point. y=-5x+7;(7,0)

Answers

Answer:

y = -5x + 35.

Step-by-step explanation:

y = -5x + 7

The slope for that y = -5x+7 is -5. Parallel lines have the same slopes which means the line parallel to that one will also have a slope of -5.

So now let's use the slope intercept form to create the equation that is parallel to the above equation.

y = mx + b

Since slope (m) is -5, we can plug it into the equation.

y = -5x + b

Now let's use the point (7,0) to find the y-intercept (b). We can do that by plugging the numbers in (7 for x and 0 for y).

y = -5x + b

0 = -5(7) + b

0 = -35 + b

b = 35

Now let's plug the y-intercept back into the equation.

y = -5x + 35

Therefore, the equation is y = -5x + 35.

Hope this helped! If not, please let me know! <3

4 The scale drawing represents the aerial view of a building. The actual building has
a perimeter of 48 m. Draw another scale drawing of the building using the scale
2 m to 1 unit length from the building to the drawing,

Answers

Answer:

Step-by-step explanation:

Please help me with this problem

Answers

Answer: D)  [tex]m \angle 2 = m\angle 5[/tex]

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

Explanation:

Let's go through the answer choices to see what's true and what's false.

A) This is true because they are corresponding angles. Corresponding angles are congruent when we have parallel lines.B) This is true as well. The reasoning is the same as choice A.C) These angles are vertical, so they are congruent angles. This is true.D) This is false. The angles are supplementary. They would only be congruent if both angles were 90 degrees; otherwise, they aren't congruent.

40/12 to a mixed fraction ?

Answers

Answer:

3 1/3

Step-by-step explanation:

40/12

12*3 = 36

40-36 = 4 so there is 4 left over which goes over the denominator

3  4/12

Simplify

3 1/3

Find the solution set of the inequality
52−3x<−14.

Answers

Step-by-step explanation:

52 + 14 < 3x

66 < 3x

66/3 < x

22 < x

Answer:

x > 22

Step-by-step explanation:

52- 3x<-14

-3x < -14 -52

-3x < -66

x > 22

Given A(2,14), B(2,3), C(4,2) and D(14,2) what about AB?

Answers

Answer - 11

I’m assuming you’re trying to find the line AB (basically the distance between point A and B). If that’s the case, since they both have the same x vale, subtract their y values. 14-3 gives you 11, which is the length of line AB

A hot air balloon ascended at the rate of
400 feet per hour for 3 hours and 15
minutes. What was the total distance that
the balloon ascended?

Answers

The answer is 1300 if you want me to show my work I will

Answer: the answer is 1300 hope this helps you

Step-by-step explanation:

Professor Florido is studying a new hybrid watermelon. She knows that a watermelon seed has probability 0.88 of germinating. She decides to plant 5 seeds. (a) What is the probability that exactly 2 seeds will germinate? ( Round to 4 decimals) (b) What is the probability that at most 3 seeds will germinate? ( Round to 4 decimals)

Answers

Plus cause I say it and we’d

Ignore a and b but can you help with c and d? Plz I’ll mark you as a brainiest

Answers

120+2x+20=180
140+2x=180
2x=40
x=20

C: 2x+20=60

2x=40

x=20

D: 3x+10=100

3x=90

x=30

What is the measure of ∠RQS ?
What is the measure of ∠RQT ?
What is the measure of ∠RQV ?
What is the measure of ∠UQV ?

Answers

Answer:

∠RQS = 19°

∠RQT = 90°

∠RQV = 161°

∠UQV = 91°

Step-by-step explanation:

To get ∠RQV, you know that the line is equal to 180°, so subtract 19° from it:

∠RQV = 180 - 19

∠RQV = 161°

To get ∠UQV, you know that the line is equal to 180°, so subtract 71° and 18° from it:

∠UQV = 180 - 71 - 18

∠UQV = 91°

Hope this helps!

What is an unsecured line of credit? A. A line of credit which does not require collateral. B. A line of credit with a variable interest rate. C. A line of credit offered by an institution other than a bank, such as a department store. D. A line of credit offered to an individual with no credit history.

Answers

Answer:

A

Step-by-step explanation:

Answer:

a.

A line of credit which does not require collateral.

Step-by-step explanation:

What is the dollar value of 10 pennies and 9 nickels? What is the dollar value
of p pennies and n nickels?

Answers

What on that be $1

Step-by-step explanation:

because when you add 10 pennies and 9 nickel it will give you one dollars hope it helps ♥️♥️♥️

Answer: dollar value is 55 cents

Step-by-step explanation: Common Sense

What is the graph of the line 4x + 2y = 6?

Answers

Answer:

here you go, this is your answer

Choose the equations that are not linear equations.

A. x/2-y^3=1
B. -x-y=2
C. x=5
D. x^2+y=4

Answers

D. X^2+y=4 is NOT a linear equation.

Step-By-Step Explanation:

The exponent in x^2 indicates this is a polynomial equatuon, because when graphed, it doesn't form a line.

Answer:

hello I'm getting free points

HELP GIVING OUT BRAINLIEST WHOEVER'S FIRST!!!!

Answers

Answer:

30

Step-by-step explanation:

2x^3+3y-4

2(2)^3+3(6)-4

2(8)+18-4

16+18-4

30

2(8)+3(6)-4

16+18-4

30

Which equation represents a line that passes through the 2 points in the table

Answers

Answer:

A

Step-by-step explanation:

I took the test

There are two classrooms available for the upcoming debate tournament. Room A has a capacity of 28 and room B has a capacity of 35. If
there are 253 students participating in the tournament write an inequality to represent how many possible sessions there would have to
be, given that both rooms could be used at once? Let a represent room A and b represent room B.

Answers

Answer:

first one

Step-by-step explanation:

What’s 4 divided by 3.3

Answers

Answer:

it is 1.21repeated hope this helps

A sweater us on sale for $16, which is 80% of the original price. What is the original price of the sweater?

Answers

Answer:

$28.80

Step-by-step explanation:

16 times 0.8 = 12.8 + 16 = 28.80

Describe the transformation
A) translation 2 units down
B) reflection across y=-1
C) reflection across the x-axis
D) across the y-axis

Answers

Answer:

Reflection across the x-axis

Step-by-step explanation:

Lisa went to the hardware store and bought 12 pieces rope. Each rope was 3/4 of a meter long. If the rope cost $3.50 a meter, how much did she spend?

Answers

.....................................

Answer:

(B) 31.5

Step-by-step explanation:

i feel bad for asking a longer question but i'm really in need of help to finish my test review its a big grade and i'm struggling on this problem

Answers

I think what you would have to put is divide so split the total of the tickets and that how much and plssss give me brain list

e-2=13 pls someone help me

Answers

Answer: E=15

Step-by-step explanation: If you add 13 and 2 it adds up to 15, so E would have to be 15

Answer:

15

Step-by-step explanation:

to solve this you would need to add 13 and 2 since it's inverse operation of subtraction which would give you 15 since 15-2=13

find the x and why intercepts of the graph of the equation x + 2y = 10

NEED HELP ASAP

Answers

Answer:

Step-by-step explanation:

To find the x-intercept and y-intercept of the equation we need to understand what is an intercept. Intercept means to intersect/cut so x-intercept means the equation cuts the x-axis and y-intercept means the equation cuts the y-axis.

So if the equation cuts the x-axis the coordinate should be [tex](x,0)[/tex]  and if the equation cuts the y-axis the coordinate should be [tex](0,y)[/tex] , and since the equation satisfies these both points in other words these two points lie on the line they can be put into the equation. So here we go,

For x-intercept

[tex]x+2y=10\\x+2(0)=10\\x=10[/tex]

so the x-intercept is (10,0)

For y-intercept

[tex]x+2y=10\\0+2y=10\\2y=10\\y=10/2\\y=5[/tex]

so the y-intercept is (0,5)

I also have attached an example of how intercepts looks like you can take a look i plotted the graph an you can see our answers check out.

A pack of gum costs $2.95. If it holds 12 sticks of gum, about how much would one individual stick of gum cost?
A $0.05
$4.00
$0.40
D $0.25
E $3.60

Answers

Answer:

$0. 25

Step-by-step explanation:

2. 95 ÷ 12 = 0.24583333

Round the number and you would get

0. 25

Answer:

D. $0.25

Step-by-step explanation:

the whole pack costs $2.95 and there are 12 sticks, so you divide the total cost ($2.95) by the amount of sticks (12) and get the answer $0.2458, or $0.25 rounded up. :)

After leaving his house, Nate drove fifteen minutes to take his oldest daughter to the middle school and then drove ten minutes to take his two younger daughters to the elementary school. Next, Nate drove twenty-five minutes to work. If Nate arrived at work at 9:30 a.M., what time did he leave his house?

Answers

8:40 AM, 15 + 10 + 25 = 50 so go 50 minutes backwards.

The time Nate left his house is 8 : 40 am

After leaving his house, Nate drove 15 minutes to take his oldest daughter to the middle school . Therefore,

Time spent to middle schoolt = 15 minutes

Then he drove ten minutes to take his two younger daughters to the elementary school. Therefore,

Time spent to elementary schoolt = 10 minutes

He drove twenty-five minutes to work. Therefore,

Time spent to workt = 25 minutes

He arrived at work at 9:30 am. The time he left home can be calculated as follows:

Total time spent on the road = 15 + 10 + 25 = 50 minutes

Therefore,

Time he left home = 9:30 - 50 = 8 : 40 am

learn more on time here: https://brainly.com/question/25923001?referrer=searchResults

The arithmetic mean of three consecutive even integers is 20. Which equation could be used to find the integers? A) x(x + 2)(x + 4) = 20 B) x + 2x + 4x 3 = 20 C) x(x + 2)(x + 4) 3 = 20 D) x + (x + 2) + ( x + 4) ] = 20 E) x + (x + 2) + ( x + 4) 3 = 20

Answers

Given:

The arithmetic mean of three consecutive even integers is 20.

To find:

The equation that can be used to find the integers.

Solution:

Let the three consecutive even integers are x, x+2 and x+4.

We know that,

[tex]\tex{Mean}=\dfrac{\text{Sum of observations}}{\text{Number of observations}}[/tex]

The arithmetic mean of three consecutive even integers is:

[tex]\tex{Mean}=\dfrac{x+(x+2)+(x+4)}{3}[/tex]

It is given that, mean = 20. So,

[tex]\dfrac{x+(x+2)+(x+4)}{3}=20[/tex]

Therefore, the correct option is E.

A school has $15,000 to spend on computer monitors. The school plans to purchase 200 monitors for $89 each. A teacher completes the calculations below and concludes that the school has enough money to buy the monitors. 200 × 89 = (200 × 8) + (200 × 9) = 1,600 + 1,800 = 3,400

Answers

Answer:

Since the budget of the school is $15,000, the school does not have enough money to buy the monitors

Step-by-step explanation:

The school plans to purchase 200 monitors for $89 each.

This is the calculation of the teacher

200 × 89 = (200 × 8) + (200 × 9) = 1,600 + 1,800 = 3,400

The teacher's calculation is wrong

The correct calculation using Distributive property is

a(b + c) = ab + ac

200 × 89 = 200(80) + 200(9)

Because 80 + 9 = 89

Hence,

200 × $89 = 16000 + 1800

= $17,800

Since the budget of the school is $15,000, the school does not have enough money to buy the monitors

$17, 800 ≠ $15,000

HURRY!!!!
The value of a baseball card can be represented by the equation y = 3 x + 39, where x represents the number of years that Robert has owned the card and y represents the total value, in dollars, of the card. What was the value of the card when Robert originally purchased it?
$3
$13
$36
$39

Answers

The value of the card was $13 when he originally purchased it.

Answer:

mark as brainliest plz...        it is $39

Step-by-step explanation:

ayeeeeeeeeeeeeeee

A puppy named Boots started out at 4 pounds and gained 3 pounds every month. At how
many months did Boots weigh 25 pounds?

Answers

Answer: 7 months

Step-by-step explanation:

He started at 4 pounds so if he grew 3 pounds every month, it would take 7 months to grow 21 pounds. 21 pounds plus 4 pounds is 25 pounds.

Answer:

7 months

Step-by-step explanation:

3 times 7 is 21 than you add the original 4 and get 25 so therefore the answer is 7 months

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