The difference between a number and its square is 20. Find the
numbers.​

Answers

Answer 1

Answer:

-4 or 5

Step-by-step explanation:

let number be x

x²-x=20

Rearrange

x²-x-20=0

(x+4)(x-5)=0

Separate

x+4=0, x-5=0

x=-4 or 5


Related Questions

interest rate and time math

Answers

1: $2745

2: $8970

Ya just multiply the percent by the amount of years and add it to the original amount of money in the account.

Challenge: Perla worked 4 hours at her job on Saturday and then spent $12.75, in the supermarket, on her way home. She worked 5 hours on Sunday and earned 1.5 times her normal hourly rate because it was a holiday. She spent $8.50, at the florist, on her way home on Sunday. If Perla had $70.75 after her spending, determine her normal hourly rate.
Write and solve an equation.
Note:
decide what your variable represents (example: x is number of hours)
only use 1 variable.
Work backward to check your final answer

Answers

W=normal hourly wage

4W-12.75+5*1.5W-8.50=70.75

4W-12.75+7.5W-8.50=70.75

11.5W-21.25=70.75

11.5W=92

W=8

Normal hourly rate is $8/hour

Check

32-12.75+60-8.50=70.75


Simplify. 1.5m ^7(-4m ^5)^2


A.-6m^14

B.24m^14

C.12m^17

D.24m^17

Answers

Answer:

D. 24m^17

Step-by-step explanation:

Answer:

D. 24m^17

Step-by-step explanation:

0 Example: Loan payments of $400 due 95 days ago and $700 due today
are to be repaid by a payment of $600 thirty days from today and the
balance in 125 days. If money is worth 6% and the agreed focal date is
125 days from today, what is the size of the final payment?​

Answers

Answer:

[tex]X=\$519.48[/tex]

Step-by-step explanation:

From the question we are told that

Loan 1 [tex]X_1=\$400[/tex]

Loan 1 due [tex]t_1=95days[/tex]

Loan 2 [tex]X_2=\$700[/tex]

Loan 2 due[tex]t_2=0days[/tex]

Payment [tex]Y=\$600[/tex]

Worth of money [tex]w=6\%[/tex]

Payment due [tex]t=30days[/tex]

Focal date [tex]t_f=125days[/tex]

Generally [tex]\$400[/tex] was due 95days ago

Therefore

[tex]125+90=220days[/tex](total days to consider)

Therefore

[tex]300+400 =700[/tex] is due today

125days left

Given

600 due in 30days

[tex]125-30=95days[/tex]

Generally the Final payment is mathematically given by

[tex]400(1+ 0.06*\frac{220}{365} ) + 700(1+0.06*\frac{125}{365} )=600(1+0.06*\frac{95}{365} )+X[/tex]

[tex]X=1128.9692 - 609.3698[/tex]

Therefore the

[tex]X=\$519.48[/tex]

I need help please!!

Answers

Answer:

Each additional cup is 1 centimeter.

Step-by-step explanation:

We know this because we can see the height on the graph. For each number of cups increased (y-axis), 1 centimeter in height increases as well.

Therefore, we can say that each additional cup is 1 centimeter.

Which graph represents 3x2 + 3y2 - 48x + 60y + 372 = 0?

Answers

Answer:

A. on edge 2021

Step-by-step explanation:

bruv

Answer:

graph (a) / first graph

Step-by-step explanation:

^u^

Tell whether each proportion is true or false and prove your answer.

Answers

Answer:

the proportion is false

Step-by-step explanation:

5.5/7.5 = 11/15

3.5/7= 1/2

5 The area of a rectangular lawn is 255 m². If its length is 15 m, find its perimeter.​

Answers

Area of a rectangular lawn = l×b

255=15×x

Hence the breadth is 17 m

Hence perimeter =2(l+b)=2(15+17)=64

On a test Darra scored 36 points. If there were 40 points posible what grade did she get?

Answers

Answer:

90%/A

Step-by-step explanation:

if this helped please mark brainiest.

Answer:

She got a 90%

Step-by-step explanation:

You have to divide the number you got with the number that you can get out of. (36/40=0.9) and then convert the decimal to a percentage

Just look at the pictures I really need help

Answers

Answer:

Step-by-step explanation:

It can be shown that all four sides of this figure have the same length.  This, in turn, is the definition of a rhombus.

agree or desagree ? ..........​

Answers

Answer:

Disagree.

If you rotate the octagon 90° it will look the same.

good luck, i hope this helps :)

Answer:

Disagree

Step-by-step explanation:

If you have any shape and you rotate it 90 degrees, it moves down and to the right, not onto itself.

Find the degree of the monomial.
6r2n4t

Answers

Answer:

idek

Step-by-step explanation:

Preston and Horatio have 49 games in total. Horatio has 11 more games than Preston. How many games does Preston have?

Answers

preston has 38 games cause 11+x=49 x=38

20 subtracted from the product of x and 10

Answers

Answer:

10x-20

Step-by-step explanation:

x times 10 is 10x

10x - 20 = 10x - 20

in conclusion you cannot subtract a number from a variable

20 subtracted from the product of x and 10?

answer : 10x-20

Help I’m confused big points to who can solve this

Answers

Answer:

n = 2

Step-by-step explanation:

Given nx + y = 4, if we rearrange in slope-intercept form: y = -nx + 4

This means that the y-intercept is 4. Point "A" is the y-intercept, which would make OA = 4, and OB = 1/2(4) = 2.

We can now solve for n. The slope here is "-n", also represented by rise/run or OA/-OB = 4/-2 = -2.

-n = -2,

n = 2

What is the answer to -2 3/4 ÷ 5/-9 ??

Answers

Answer:23 /180

Step-by-step explanation:

−23/ 4 /5 /−9=  23 /180

Answer: 99/20

Step-by-step explanation:

-2 3/4 / 5/-9

-11/4/5/9

11/4*5/9

99/20

Lin is solving the inequality 15−x<14. She knows the solution to the equation 15−x=14 is x=1 How can Lin determine whether x>1 or x<1 Is the solution to the inequality?

Answers

Answer:

x > 1

Step-by-step explanation:

Given the inequality ; 15 - x < 14

Since the solution to the equation 15−x=14 is x=1 ;

Then we obtain the value of x for which the inequality expression is true :

If x > 1 ; take x = 2

15 - 2 < 14

13 < 14 (true)

If x < 1 ; take x = 0

15 - 0 < 14

15< 14 (not true)

Hence, solution is x > 1

If Amy has two apples and drops one, how many does she have now?

Answers

She still has two since she only dropped it and hasn’t eaten it yet

Solve 5(11x - 2) = 155

Answers

Answer:

5(11x-2) = 155

55x - 10 = 155

55x = 165

x = 165/55

x = 3

Step-by-step explanation:

hope it helps

Write an equation for the line passing through (–6, 5) and (–6, –4).

Answers

Answer:

y = x + 11

Step-by-step explanation:

y = 9/0

Slope = 0

5 = -6 + b add 6 to both sides

11 = b

y = x + 11

Classify the pair of angles.

O adjacent
O complementary
O supplementary
Onone of these

Answers

This is going to be none of these? For me it’s an acute but let me know what you think

The pair of angles are acute angles.

The correct option is none of these.

What is an angle?

The angles between two lines are the angles formed by two intersecting lines, measured in degrees or radians.

Several different types of angles can be formed between two lines, including acute angles, right angles, and obtuse angles.

We have,

The pair of angles of 30 and 30 are equal in measure.

But they are not adjacent, as they do not share a common vertex and a common side.

They are also not complementary, as complementary angles add up to 90 degrees, and 30 + 30 = 60.

Similarly, they are not supplementary, as supplementary angles add up to 180 degrees, and 30 + 30 = 60.

Therefore,

The pair of angles are none of the given options.

Learn more about angles here:

https://brainly.com/question/7116550

#SPJ7

Please help me answer this last question.
The function shown describes f(x), the cost (in hundreds of thousands of dollars) of making x bicycles (in thousands).

f(x)= 1.25 + 0.35x
B. What is the cost to make 4,000 bicycles? Show your work.

Answers

Answer:

1401.25

Step-by-step explanation:

F(4000)= 1.25+0.35(4000) = 1401.25

Please answer this !!!!!!!!
Then maybe you will be the Brainlist!!!!

Answers

Answer:

A. 60

B. 50

C. 5

Hope this helped :3

ANSWERS

A THE INITIAL SPEED OF CAR IS O KM/H

B THE HEIGEST SPEED OF VAN IS 50 KM/H

C FOR 10 sec THE VAN IS TRAVELING FASTER THAN CAR

PLEASE MARK ME AS BRAINLIEST

I do not know how to find the x in this situation can anyone help?

Answers

Answer and Step-by-step explanation:

Essentially, the figure FEHG got scaled by a factor of 1.5, and turned into BADC

So 2.4 times 1.5 is 3.6

3.6 = x

Hope this helps! #teamtrees #WAP (Water And Plant)

Answer:

The x would be 3.6

Step-by-step explanation:

If you see the relation or ration between the ABCD triangle and the EFGH then we can see that the side 2 is multiplied by 1.5 to get to 3. so you do the same thing to 2.4 and multiple that by 1.5 and 3.6.

ayudaaa plis
7-4=
6-2=
-3-2=
-8+9=
-9+5=
1+10=​

Answers

Answer:

7-4=3

6-2=4

-3-2= -5

-8+9=1

-9+5= -4

1+10=11

Step-by-step explanation:

No es tan difícil, puedes g0oglearlo

Answer: 3, 4, -5, 1, -4, 11

Step-by-step explanation:

What inverse operation should be used to isolate the variable in the equation k − 9 = 10?

Answers

Answer:

+9

Step-by-step explanation:

k-9=10

the opposite of -9 is +9

k=19

hope this helps x

brainliest plzz

Plz help!!!!!!!!!!!!!!!!!!!

Answers

Answer:

1.

[tex]7x[/tex]

2.

[tex]x - 5[/tex]

3.

[tex]x \div 2[/tex]

4.

[tex]x + 4[/tex]

Hope it helped

PLS mark BRAINLIEST

A rope weighs 800 grams per meter of length. What is the weight in kilograms of 12.2 meters of the rope?

Answers

Answer: the weight in kilograms is 9.76kg

Step-by-step explanation:

1 meter of length of rope = 800 g

12.2 meters of the rope= (12.2meters x 800g)/ 1 meter=9760grams

We know that 1000 g = 1kg

 9760 grams = 9760/1000=9.76 kilograms

HELP ME 7th grade math
What is the total amount of cardboard needed to manufacture this polyhedron? (Find the surface area)
​Plz answer

Answers

the answer is 62.715 :)

A group of friends met for lunch and shared 4 small pizzas. Each person got 1 1/3 pizzas. How many friends went for lunch?

Answers

Answer:

3 friends

Step-by-step explanation:

4 / 1 1/3 = 4 / 4/3 = 4 x 3/4 = 3 friends

Hope that helps!

Answer:

3 friends.

Step-by-step explanation:

Divide 4 pizzas by 1 1/3. This will get you 3. You can check your work by multiplying 3 by 1/13, which gets you 4 pizzas, therefore proving this answer as correct.

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