Mathematics High School

The area of a rectangle is 60 square inches.

The length is x – 3, and the width is x + 8.

Find the value of x, and the dimensions of the rectangle.

A=lw

Answers

Answer 1

X=7 because 7-3 = 4, 7+8= 15,15x4=60.

Related Questions

A car's value depreciates by 18% in its first year and is now worth £6789.
What was the original price of the car?

Answers

Answer:

  £8279.27

Step-by-step explanation:

The given relationship is ...

  (original price) × (1 - 18%) = £6789

Dividing by the coefficient of the original price, we find it to be ...

  original price = £6789/0.82 = £8279.27

The original price of the car was £8279.27.

Which of the following are not polynomials?

Answers

Answer:

A C and D are not polynomial

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2

Answers

Answer:

y+5= -2/3 (x-4)

I used Desmos

A weather station on the top of a mountain reports that the temperature is currently 0°C and has been falling at a constant rate of 3°C per hour. What was the temperature 4.5 hours ago ?

Answers

Answer:

10.5 degrees Celsius

Step-by-step explanation:

Answer: 13.5

Step-by-step explanation:

This is because 3x4.5=13.5

HELPPPP PLS!! TY

Look at triangle ABC.

Coordinate grid shows negative 5 to positive 5 on the x axis and y axis at intervals of 1. A triangle ABC is shown with A at ordered pair 4, 5, B at ordered pair 1, 2, and C at ordered pair 4, 2.

What is the length of side AB of the triangle? (1 point)

Square root of 6

3

Square root of 18

6

Answers

Step-by-step explanation:

as you can see, the distance between 2 points can always be seen as the Hypotenuse or baseline of a right-angled triangle created by the differences of the x and y coordinates of both points.

the drawn triangle is nothing else than that.

to calculate the length of a side in such a triangle we need to use Pythagoras :

c² = a² + b²

c is the Hypotenuse of baseline of the triangle and is opposite of the 90 degree angle.

a and b are the legs of the triangle "enclosing" the 90 degree angle.

so, we have

AB² = AC² + BC²

AC and BC we know : the coordinate differences in x and y directions.

AC = (4, 5) to (4, 2). as the x coordinates are the same, the difference is just the difference in the y coordinates : 5-2 = 3.

BC = (1, 2) to (4, 2). as the y coordinates are the same, the difference is just the difference in the x coordinates : 5-1 = 3.

AB² = 3² + 3² = 9 + 9 = 18

AB = sqrt(18)

FYI : sqrt(18) = sqrt(9×2) = 3×sqrt(2)

Sophie decides to ride her bike also. After 3 days, she rode 114 minutes. After 8 days, she rode 304 minutes. What is Sophie's rate per day? She ridesminutes per day

Answers

Answer:

38 minutes per day

Step-by-step explanation:

Divide 114 to 3

114 ÷ 3 = 38

Divide 304 to 8

304 ÷ 8 = 38

Answer:

1 day = 38 minutes

Step-by-step explanation:

3 days = 114 minutes

=> 1 day = 38 minutes

=> 8 days = 38 x 8 minutes.

Her rate is 1 day = 38 minutes. Hoped this helped.

round 2,419 to the nearest hundred​

Answers

Answer:

2,400

Step-by-step explanation:

Can I please have brainliest?? thanks!! have an awesome day and good luck with your math :)

Answer:

2,400

Step-by-step explanation:

x =


A )10

B) 8

C) 9




Help me please this note is just so it will stop saying this is to short

Answers

A) is the following answer ,

Answer:

8

Step-by-step explanation:

it just makes sense, 5=10, therefore 4=8.

I already know the FEC = 90 but whats ABC

Answers

Answer:

it looks like 60

Step-by-step explanation:

A group of friends is sharing 2 ½ pounds of berries
If each friend received 5/4 of a pound how many friends are sharing the berries

Answers

Answer:

2 friends

Step-by-step explanation:

Answer:

3 1/2

Step-by-step explanation:

Please help me please

Answers

Step-by-step explanation:

m +2 = 4

m = 2

x = 1

y +1 = 2

y = 1

z = -1

M=2
X= 1
Y=1
Z=-1
This is the answer to the equation.

Please HeLp 100 PoInTs + bRaNlEyIsT

Answers

Answer:

It is congruent doe to the angle side angle congruence thereom AKA ASA

Step-by-step explanation:

That means there are two angles and one side in between. A pair of triangles  that follow this rule has an angle that is congruent to one angle. Then a side that has a tick mark after the angle must match another. Then the last angle has to match another angle ( and it can't be the same angle as before).  Usually the first pair angles have 1 semicircle and the second pair has 2 semicircles.

What is the slope of the line ( part 2 )

Answers

Answer:

-1/2

Step-by-step explanation:

What is 7536 to 1 significant figure
​

Answers

Answer:

8000

Step-by-step explanation:

Two of the angles in a triangle measure 154° and 20°. What is the measure of the third angle?

Answers

Answer:

6°

Step-by-step explanation:

The angles in a triangle always add up to 180°. Let’s call the third angle x. That means that:

154 + 20 + x = 180 ->

174 + x = 180 ->

x = 180 - 174 ->

x = 6°

Hope that help! :)

help pls ! i need to do this and i cannot figure this out

Answers

I think it’s 8 too!!!
With them being similar I noticed the bigger triangle is 18 and the second is 12. So the smaller triangle was shrink by 1/3 which give 1he 12 for the bigger triangle you take 1/3 away in which your left with 8.

Please help me please

Answers

Step-by-step explanation:

m +2 = 4

m = 2

x = 1

y +1 = 2

y = 1

z = -1

4x+y=8
x+2y=5
substutuion method

Answers

Answer:

i dont know sry....i ned points..

A. Wealth
B. Level of living
C. liquidity
D. Assets

Answers

Answer:

D: assets.

Step-by-step explanation:

Plz help don't understand
1 thru 4------Don't mind the other writing------

Answers

Hi there friend, I hope this helps explain a little better. Let me know if you have questions.

Y=6 z=7 h=0 what is y+h

Answers

Evaluate

[tex] \sf \longmapsto \: y + h[/tex]

When

[tex]y = 6[/tex][tex]z = y[/tex][tex]h = 0[/tex]

Let's start.

[tex] \sf \longmapsto \: y + h[/tex]

Put the values

[tex] \sf \longmapsto6 +0[/tex]

Answer

[tex] \sf \longmapsto6[/tex]

But there is no use of z = 7 . Z is excluded from y+h.

Write down an equation of the line that is perpendicular to y=2x+5
I will mark as brainliest

Answers

Answer:

y = -1/2x +5

Step-by-step explanation:

The perpendicular slope will be the negative reciprocal of the original slope

the reciprocal of 2 is 1/2, and the negative of that is -1/2

4x^2 - 3 when x= -10

Answers

Answer:

397

Step-by-step explanation:

1. To evaluate this expression, we plug in the value of x and simplify.

[tex]4x^2 - 3[/tex] [tex]4(-10)^2 - 3[/tex] [tex]4(100)-3[/tex] [tex]400-3[/tex] [tex]397[/tex]

Therefore, the answer is 397.

solve step by step and explain
factorize
6(2a+3b)² - 8(2a + 3b)​

Answers

Answer:

Step-by-step explanation:

HELP PLS ASAPPPPP AHH

Answers

Answer:

25021/50 ft.

Step-by-step explanation:

Convert decimal to fraction, 50042/100 ftReduce the fraction: 25021/50 ft

More Explanation on Rational Numbers:

Rational numbers are the numbers which can be written as fraction of a/b where a,b be any integer and b≠0. They are finite and recurring decimals.

For example:- 0.2 is a rational number and can be written as 2/10 or 1/5.

Irrational numbers are the numbers which can not written as fraction and they are non-terminating .

For example: The √2 [square root of 2] is also an irrational number. After simplifying,it would be written as 1.41421356237…so on ,but the numbers go on into infinity and do not ever repeat, and they do not ever terminate.

Have a great day! :D

Need to minus the number but first try and find a other number to minus it

Can someone pls help me!

Answers

Answer:

x is -3

Step-by-step explanation:

need help please i’m struggling to solve

Answers

I can't give a very good answer as I don't know what resources are available to you, but this is what I managed to find with a ti-84 calculator.

[tex]y=-31.24+1.34x[/tex]

If you want a better step-by-step, tell me what's in that 'open statistics calculator' option and I'll see what I can figure out.

edit: missed that second part of the question

Using this equation to calculate a test grade with a homework grade of 90:

[tex]y=-31.24+1.34(90)=89[/tex]

Together, Sierra and Gavin earned $5,404. Sierra earned four-sevenths
of the money

Answers

5/7 of $5,404 is $3088.

Sierra earned $3088 and Gavin earned $2316

The coordinates of the end points of TU are T(2,4) and U(11,13)

Answers

Answer:

[tex]T(2,4) and U(11,13)[/tex]

Step-by-step explanation:

List numbers that are between -103 ad -130

Answers

Answer:

104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123,124,125, 126, 127, 128, 129

Hello! :)

Numbers between -103 and -130:

-104-105-106-107-108-109-110-111-112-113-114-115-116-117-118-119-120-121-122-123-124-125-126-127-128-129

These are the numbers between -103 and -130. Hope it helps. Please ask if you have any query.

~An excited gal

#CarryOnLearning

[tex]MagicalNature[/tex]

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