Mathematics High School

Solve the system by substitution:
3x + 2y = 26
Y=x + 3

Answers

Answer 1

Answer:

x = 4

Step-by-step explanation:

3x + 2y = 26

y = x + 3

Plug in the equation for y

3x + 2(x + 3) = 26

Multiply the 2 with what is in the parantheses

3x + 2x + 6 = 26

Combine like terms and solve for x

5x + 6 = 26

5x = 20

x = 4

Answer 2

Answer

x=4, Y=7

Step-by-step explanation:

3x + 2y = 26

Y=x + 3

3x+2(x+3)=26

3x+2x+6=26

5x=20

x=4

Y=4+3

Y=7

Check

3(4)+2(7)=26

12+14=26

26=26

Related Questions

What is the factored form of z^2– 9?

Answers

z^2-9 becomes sqrt(z^2)=sqrt(9) becomes z=+-3, or just 3

Answer:

OR just 3

Step-by-step explanation:

z^2-9 becomes sqrt(z^2)=sqrt(9) becomes z=+-3

4) easy- solve for x

Answers

Answer: - 8

Step-by-step explanation:

x/4 - 5 = -7

=> x/4 = -2

=> x = -8

Answer:

x=−8

Step-by-step explanation:

Add 5 to both sides

x/4-5+5=-7+5

x/4=-2

4x/4=4(-2)

x=-8

A person dove more than 100 feet below sea level.

Which value could represent the elevation, in feet, that the person dove?
A. -125
B. -50
C.60
D.150
please help i just have 10 minutes left
dont troll

Answers

Answer:

-125

Step-by-step explanation:

sea level is zero so cant be above that and the answer has to be below -100 and the only option is -125

Answer:

A -125

Step-by-step explanation:

because they went over 100ft below sea level

and if sea level is exactly 0 and they went under it over 100 the only option over 100 with a negative sign to show they went below sea level would be -125

an urn contains 10 blue marbles and 8 yellow marbles a marble is drawn and dropped back into the urn. Then a second marble is drawn and dropped back into the urn both marbles are yellow if another marble is drawn. what is the probability that it will be blue

Answers

Answer:

80/729

Step-by-step explanation:

8/18x8/18x10/18=640/5832

80/729

Tell whether each equation has no solution, one solution, or infinitely many solutions.
3x-12=3x+1

Answers

There are no solutions to the equation.
Subtracting 3x from both sides gets you -12 = 1 which is never true therefore for any value of x you choose the equations will never equal each other

A family of 2 adults and 3 children went on holiday to Miami.

The family visited a theme park.

They paid a total of 322 dollars to go in.

The exchange rate was £1 = 1.84 dollars.

Change 322 dollars to pounds (£).

Answers

Answer:

£175

Step-by-step explanation:

Given the exchange rate was £1 = 1.84 dollars.

We are to change 322 dollars to pounds (£).

£1 = 1.84 dollars.

x = 322 dollars

Cross multiply

1.84 * x = 322

1.84x = 322

x = 322/1.84

x = 175

Hence 322 dollars in pounds will be £175

Write the equation of the line in standard form of the line that passes through (-3, 9) and has a slope of 3.

Answers

Answer:ez just divise all

Step-by-step explanation:

If you could live anywhere, where would it be?
What is your biggest fear?

Answers

Answer:

A forest and a Lion and a bear

Step-by-step explanation:

Answer:

a tropical island

Step-by-step explanation:

cuz their is farm equipment know as a

e
ath!
0 of 8
3. Mark-up, Discount,
Change Assignment
POINTS
TODAY
POINTS
THIS WEEK
GAME
CREDITS
$ $
$
First try was incorrect
Belvedere goes to the store and buys a soccer ball for $50. The store
is running a discount of 10%. What is the price of the soccer ball after
the discount?

Answers

Answer:

$45 after the discount

Step-by-step explanation:

Set up a proportion.

     [tex]\frac{x}{50} = \frac{10}{100}[/tex]      $50 is the total amount and make the 10% a decimal

x(100) = 50(10)

100 = 500

100 ÷ 500

x = 5     <-- We have to subtract this amount from the total

$50 - $5 = $45 <-- total after the discount

Hope this helps!!

I agree with the person on top have a nice day :)

Three times a number w is less than 18.

Answers

Answer:

3w < 18

Step-by-step explanation:

To do 3 times if you put 3 against a variable that means to multiply. Since a number is unknown it turns into variable which is w in this case. Then less than 18 to do the less than symbol, think of them like crocodile they always eat the bigger number and since 3w is less than 18 the croc < eats 18. Thats just an easy way of remembering. Hope this helps :)

Which integer represents this situation?

A skydiver jumped out of a plane at an elevation of 1,600 feet.

0
1,600
-1,600

Answers

Answer: 1600 feet the second answer

hope this helped! :)

Answer:1600

Step-by-step explanation:

on a scale of one to 100, your teacher crankiness is directly proportional to the number of students talking while she is talking, the teachers crankiness index is 5. What is her crankiness index when 6 students are talking?

Answers

Answer:

30 (random guess)

Step-by-step explanation:

Last week, John ran 10 miles. If John runs 35 percent farther this week, then how many more miles did he run this week?

Answers

10*.35=3.5 more miles

100% = 1.0
50% = .50
......

(7x-8)(-1) PLEASE HURRY ITS A TIMED QUESTION !!!

Answers

-7x+8 IS UR FINAL ANSWER

Answer:

Is x a vairable? If x is a vairable, then your answer will be 56x. If x is not a vairable, and means a multiplication sign, then your answer will be 56.

Find the area of this composite figure.

Answers

Answer: ≈ 551.71 ft²

All work is shown in the picture.

Answer:

551,7

see in the picture, this composite figure is made up of a rectangle and 2 halves of a circle

=> the area of this composite figure = the area of a rectangle + the area of a circle

+) the area of the rectangle = 15.25 = 375

+) the area of the circle = (15/2)².pi = 56,25pi

=> the area of this figure = 375 + 56,25pi = 551,7

option D: 8 square root 3 cm

pls help
thanks

Answers

Answer:

is b

Step-by-step explanation:

Name the constant in the expression:
3x + 5
please explain how I can solve problems like this

Answers

The constant is 5 because it is not being effected by the variable it is just a 5

in anime testers it says "what is sasuke's most used jutsu" WHAT IS IY THERE ARE SO MANYYYYY

Answers

Answer:

chidori or fire ball jutsu

Step-by-step explanation:

Answer:

nice i like naruto

Step-by-step explanation:

A 10-meter ladder leans against the wall, it is 5 meters from the base of the wall. How high, h, does the ladder reach to the nearest tenth of a meter?

Answers

Answer:

did you figure out the answer because I need it please

What is the answer????please helpp

Answers

that answer is (0,0)

what is the area of the circle with a radius of 3 m?

Answers

Answer:

The area is around 28.27

Step-by-step explanation:

Answer:

the answer would be 0

Step-by-step explanation:

a circle has no sides so it would bacically be 3x0 witch equals 0 hope this helps and maybe  brainlist?

4) Jose paid $4.98 in sales tax on an item that cost $62 before tax.
At that rate, how much would he pay in sales tax for an item that
costs $28.00 before tax?

Answers

Answer:

net is before tax

gross is after

Answer:

≈ $2.25

Step-by-step explanation:

This can be solved in two different ways.

1. Use ratios:

4.98/62 = x/28x = 4.98*28/62 x ≈ $2.25

2. Find the tax percent:

4.98/62*100% = 8.03%

And apply this to $28

$28*8.03/100 ≈ $2.25

Which expression is equivalent to -4x - 36?

A. 4(x - 9)

B. 2(2x - 18)

C. -2(2x - 18)

D. -4(x + 9)

Answers

D. -4(x+9)

For this you distribute the number outside the parentheses to both numbers inside.

A. 4(x-9)=

4x-36

B. 2(2x-18)=

4x-36

C. -2(2x-18)=

-4x+36

D. -4(x+9)=

-4x-36

Therefore, D is the answer

Beth goes on holiday to Spain.
The exchange rate is £1 = €1.13
She changes £350 into Euros (€).
(a) Work out how many Euros she receives.
When Beth returns from holiday she changes €120 back into pounds.
The exchange rate is now £1 = €1.16
(b) Work out how many pounds (£) Beth receives.
Give your answer to the nearest penny

Answers

Answer:

A

Step-by-step explanation:

What is the radical form of 8½

Answers

Convert to radical form using the formula
a
x
n
=
n
√
a
x
a
x
n
=
a
x
n
.
Exact Form:
√
8

The question is attached.​

Answers

Answer:

-3, uh its a short answer

I got -3
If u need the work lmk

Heather invests $3572 in a retirement account with a fixed annual rate of 5% compounded 4 times per year what will the account balance be after 16 years

Answers

Answer:

$7910.3

Step-by-step explanation:

Given data

P=$3572

n=4

T=16 years

R= 5%

The compound interest is expressed as

A= P(1+r/n)^nt

Substitute

A=3572(1+0.05/4)^16*4

A=3572(1+0.0125)^64

A=3572(1.0125)^64

A=3572*2.21453241061

A=$7910.3

Pls help me, I'll give brainliest

Answers

Your answer is 2x^2y^4 (the third option)

First take and rewrite the equation
(8x^6y^12)^1/3
Use power to power rule by multiplying and you will get 2x^2y^4

Hope this helps
The answer is C. Please like :)

NEED HELP PLSSSSSS HELP MEEE

Answers

Answer:

Step-by-step explanation:

0 quarter = 20 dimes

dime to quarter = divide by 20

quarter to dime= multiply by 20

4 quarters = ? dimes

4 x 20 = 80 dimes

0 dimes = ? quarters

0/20 = 0 quarters

5 dimes = ? quarters

5/20 = 0.25 quarters

Answer: SORRY I WISH I CAN HELP YOU BUT PLZ DON´T GET MAD PLZ

Step-by-step explanation:

BUT I DID FIGURE THE FIRST ANSWER IS 13

what is 25.15/179.30 simplified as a fraction please help i suck at math
ill mark you brainliest

Answers

Answer:

503

------

3586

Step-by-step explanation:

that's as small as I can get it

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