Simplify and find the value for 1) x = -1, y = 1 and z = 2 (x – 2y) (3x2 + 4xy – y 2 )

Answers

Answer 1
Just asking is algebra
Answer 2

Answer:

Step-by-step explanation:

(1-2*1) (3*2+4*-1*1- 1*2)

=-1 (6+4-1-2)

-1*7

-7


Related Questions

I need help ASAP
what is the principal if the interest earned is $22 the simple annual interest rate is 2% and the time is one year​

Answers

Answer:

1,100

Step-by-step explanation:Well first find the principal first Multiply the rate 0.02 by the time 1 year this gives us 0.02 then divide the interest ($22) by 0.02 then you get $1,100

Answer:

not 1,100 its 1100

Step-by-step explanation:

Jacob is a scuba diver and is currently -15 meters below sea level. He continues to dive 7 meters down then swims up 11 meters. At what sea level does Jacob end at?

Answers

Answer:

-11

Step-by-step explanation:

Answer:

-11 meters down

Step-by-step explanation:

please help!! The picture has the question.

Answers

Answer:

B.

Step-by-step explanation:

They are used to the climate and they are harder the the rest.

Answer:

dry climate or

Step-by-step explanation:

they are in wet climate

Joshua withdrew $32.50 each week for six weeks for pitching lessons. By how much did these lessons change his savings account balance?

Answers

32.50 each week times 6 and withdraw that amount from your account would be the answer

Answer:

$195.00

Step-by-step explanation:

32.50 times 6 = 195.00

take 32.50 times 6 cause he took out money for 6 weeks of lessons then you do 32.50 times 6 and you should get 195

50 students were surveyed about their
favorite ice cream. Here are the results:

Chocolate- 13
Vanilla- 25
Cookie Dough- 12

What decimal represents the students who
prefer cookie dough?

Answers

Answer:

0.12

Step-by-step explan

2.1 + 1.4 Find The Sum :)

Answers

3.5 !! good luck girl

Which of these steps will eliminate a variable in this system? 4x-9y=8 2x+3y=24

Answers

For eliminate a variables we need addition method or elimination method.

Define the term Variable?

In an equation or formula, a variable is a symbol or letter that stands in for an unknowable or varying quantity or value.

We can multiply the second equation by -2, so that the coefficient of x in both equations will be the same but with opposite signs:

⇒ 4x - 9y = 8

⇒ -4x - 6y = -48

Add the two equations together: ⇒ -15y = -40

⇒ y = 8/3

Substitute this value of y back into either equation to solve for x.

⇒ 4x - 9(8/3) = 8

⇒ 4x - 24 = 8

⇒ x = 8

Therefore, the steps to eliminate a variable in this system using the addition method are to multiply the second equation by -2, add the two equations together to eliminate the x variable, solve for y, and then substitute that value back into either equation to solve for x.

To know more about elimination method, visit:

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Can y’all help me ASAP ! I need this done before 12am

Answers

Answer:

6 is the answer since a line is 180 degrees and it gives you 40 degrees and 90 degrees via the square symbol. you add 40 to 90 to get 130 so 7k + 8 has to equal 50.

Which phrase describes an unknown or changeable quantity?

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Answer:

b

Step-by-step explanation:

you can make it into an equation while the others you can just solve them

Analyze the diagram below and answer the question that follows.​

Answers

Step-by-step explanation:

option d is the correct answer

The answer is D. Alternate exterior angles

A figure is made up of four congruent right triangles and a square as displayed.

What is the area, in square inches, of the figure?

Answers

Answer:

It would be 33² in.

What is the solution to this equation?
8x - 5(x-3) = 18
O A. x = 7
O B. x= 11
O C. x = 5
O D. x= 1

Answers

Answer:

D x = 1

Step-by-step explanation:

The formula κ​(x)= f′′(x) 1+f′(x)23/2 expresses the curvature of a​ twice-differentiable plane curve as a function of x. Use this formula to find the curvature function of the following curve. ​f(x)=−5x2 The curvature function is κ​(x)=nothing.

Answers

Answer:

K(x) =  [tex]\frac{-10}{[1 + (-10x)^2]^{\frac{3}{2} } }[/tex]    ( curvature function)

Step-by-step explanation:

considering the Given function

F(x) = [tex]-5x^2[/tex]

first Determine the value of F'(x)

F'(x) = [tex]\frac{d(-5x^2)}{dy}[/tex]

F'(x) = -10x

next we Determine the value of F"(x)

F"(x) = [tex]\frac{d(-10x)}{dy}[/tex]

F" (x) = -10

To find the curvature function we have to insert the values above into the given formula

K(x)  [tex]= \frac{|f"(x)|}{[1 +( f'(x)^2)]^{\frac{3}{2} } }[/tex]

 K(x) =  [tex]\frac{-10}{[1 + (-10x)^2]^{\frac{3}{2} } }[/tex]    ( curvature function)

       

which number is the estimated square root of 15 closest to​

Answers

Answer:

3.87 that should be the answer

1 5/16 divided by 7/12

Answers

2.25 this is the correct answer

PLEASE HERRy i have to finish

Answers

I think it’s but I’m not sure E

Answer:

:)

Step-by-step explanation:

write a real-world problem in which two negative integers are subtracted​

Answers

Problem:

Mary was 12 (-12) feet below sea level, she sawm down another 5 feet (-5). How many feet below sea level is Mary?

(if needed) Answer: -17

The real-world problem in which two negative integers are subtracted​ is a person diving below the surface of a sea for 60 feet and 50 feet.

-60 - 50 = -110.

110 feet below the surface of the sea.

We have to write a real-world problem in which two negative integers are subtracted​.

Let us consider that a person is at the surface of a sea before he dives deep.

The person started to dive below the surface and he was now 60 feet below the surface.

Again he started to dive deep to 50 feet below.

So the person is at how many feet below the surface: - 60 - 50 = -110 feet.

The person is 110 feet below the surface.

And -60 and -50 are the two negative integers subtracted.

Thus,

The real-world problem in which two negative integers are subtracted​ is a person diving below the surface of a sea for 60 feet and 50 feet.

-60 - 50 = -110.

110 feet below the surface of the sea.

Learn more about the mathematical expression of real-world problems here:

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Somebody please answer this question I’m begging you

Answers

Answer: The answer is A, the y value increases by 1.5 as the x value increases by 1. Therefore A does not describe the graph.


Caleb is saving money to buy a bike next year. So far he has saved $150. Write an inequality to show how much he needs to
save each month for the next year so he has at least $800 to spend on the bike, then solve the inequality

Answers

He needs to save > or = to $800 sorry if this is wrong I’m a little rusty on this math topic

Three students attempt to define what a line segment is.​

Answers

Answer:

Duru's definition: A line segment is a line connecting two endpoints. Oliver's definition: A line segment is when three points are all on the same line.

Find the equation of a line that contains the points (7,3) and (−7,2). Write the equation in slope-intercept form, using fractions when required.

Answers


Answer: Y=1/14x+5/2
Explanation: find the slope of the contains point first by using the slope formula. Then use the point slope formula to find the slope intercept.

PLEASE HELP FAST!!!! THIS IS URGENT!!!


For the following set of triangles, fill in the blanks with the correct measure. Enter your answers as number only.

1) m∠A = _____˚

2) m∠B = _____˚

3) m∠C = _____˚

4) m∠X = _____˚

5) m∠Y = _____˚

6) m∠Z = _____˚

7) Segment AB = ___ units

8) Segment BC = ___ units

9) Segment AC = ___ units

10) Segment XY = ___ units

11) Segment YZ = ___ units

12) Segment XZ = ___ units​

Answers

Answer:

a=53, b=90, c=37, x=53, y=90, z=37

segment ab=3, segment bc=4, segment ac=5

pretty sure these are the answers but sorry if not

Step-by-step explanation:

Lines l and m are parallel lines cut by the transversal line t. Which angle is congruent to ∠7?

Answers

Answer:

<3, <2 or <6

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

i had it in usatestprep

wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwhat is 0/0

Answers

what is the question lol

What is the answer to this problem

Answers

Answer:

All of the above

Step-by-step explanation:

The answer is b

Hope this helps

HELP, ILL GIVE BRAINLIEST BUT HELP ASAP WITH THIS!!

Answers

Answer:

proportional

Step-by-step explanation:

A thermometer shows a temperature of Negative 20 and three-fourths degrees. A chemist recorded this temperature in her notebook using a decimal. Which number did the chemist write in the notebook?
Negative 21.ModifyingAbove 4 with bar
Negative 21.ModifyingAbove 3 with bar
Negative 20.75
Negative 20.34

Answers

Answer:

The answer is C.

Step-by-step explanation:

3/4 is equal to 0.75. If you combine 0.75 with -20, then it is 20.75.

Answer:

C

Step-by-step explanation:

PLZ HURRY IT'S URGENT!!!
What is the slope of the line?

y=3
options:

0


1


3


undefined

Answers

Answer:

0

There is no x or number with an x (example: y= 2x+3, the 2 would be the slope)

Answer:

0

Step-by-step explanation:

NEED A MATH TUTOR ASAP !!!

tim has $20 in a savings account. The interest rate is 10% per year and is not compounded. How much will he have in 1 year ?

Answers

Answer:

$22

Step-by-step explanation:

20 * 1.10 = 22

The answer is $22 good luck!!

F(x)=3x+2 and g(x)=x^3 find (fog)(-5)

Answers

Answer:

Explanation:

f(x) = 3x+2
g(x) = x^3

(f • g)(x) = (3x+2)(x^3)
(f • g)(x) = 3x^4 + 2x^3
(f • g)(-5) = 3(-5)^4 + 2(-5)^3
(f • g)(-5) = 3(625) + 2(-125)
(f • g)(-5) = 1875 - 250
(f • g)(-5) = 1625
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