Solve this system of equations using substitution:
y = 2r-4
x + 2y = 10
Step 1: Substitute for y in the second equation. Which is the
resulting equation?

Answers

Answer 1
I’m thinking your r in the first equation is actually an x.

X + 2(2x -4) =10

X +4x -8 =10

5x = 18


Related Questions

Pls help me this is due today I’ll brainlest for the right answer

Answers

Answer:

8.67 dollars per ft squared

Step-by-step explanation:

This is a fraction equal to

130 dollars ÷ 15 ft squared

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 15

130 dollars ÷ 15

15 ft squared ÷ 15

=

8.67 dollars

1 ft squared

=

8.67 dollars

ft squared

= 8.67 dollars per ft squared

Answer:

$8.67

Step-by-step explanation:

you have the the price for 15 square ft

and you are trying to get the price for 1 square ft

just divide the original price by 15

here's the equation format

130 = 15 x

solve for x

If y = 3, which of the following expressions will
produce a value of 15?
A.5y
B.25-10y
C.4y+3
D.8y divide by 2

Answers

Answer:

A.5y

Step-by-step explanation:

5y = 5 x y

y= 3

5 x 3 = 15

=A.5y

Write an equation in slope-intercept form for the graph of
the line shown.
(y=mx+b)

Answers

The answer for 25 is y=3x+1
The answer for 24 is y=3x+5

What percentage is 0.00042 ?

Answers

Answer:

0.042%

How much is the decimal number 0.00042 written as (converted to) a percent value? Answer: 0.042%

Step-by-step explanation:

hope it helps please give me a heart

Answer:

0.042%

Step-by-step explanation:

0.00042 as a percent have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol % . 0.00042 * 100 = 0.042% and then you get your answer!

The corner store is open 18 hours a day for 365 days a year. how many hours is the store open in a year?

Answers

Answer:

6570

Step-by-step explanation:

18x365=^

A printer prints 24 pages in 3 minutes which unit rate is correct

Answers

Answer:

 8 pages per minute

Step-step explanation:

24 / 3

What is the equation of the line that passes through the point (4,−2) and has a slope of −2?​

Answers

Answer:y=-2x+6

Step-by-step explanation:

You want to find the equation for a line that passes through the point (4,-2) and has a slope of -2.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

To start, you know what m is; it's just the slope, which you said was -2. So you can right away fill in the equation for a line somewhat to read:

y=-2x+b.

Now, what about b, the y-intercept?

To find b, think about what your (x,y) point means:

(4,-2). When x of the line is 4, y of the line must be -2.

Because you said the line passes through this point, right?

Now, look at our line's equation so far: . b is what we want, the -2 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the the point (4,-2).

So, why not plug in for x the number 4 and for y the number -2? This will allow us to solve for b for the particular line that passes through the point you gave!.

(4,-2). y=mx+b or -2=-2 × 4+b, or solving for b: b=-2-(-2)(4). b=6.

Johnny drove 300 miles using 20 gallons of gas. How many miles can he drive on 1
gallon of gas?

Answers

just divide 300/20 to get 15

answer is 15

hope this helps

:)

He can drive 15 miles .
you divide 300 miles by 20 gallons of gas and get 15 gallons of gas

hope this helps!!

manny has an investment account which compounds interest continuously at a rate of 3.1%. He puts $7500 into the account initially. after 2 years how much money does he have in the account?

Answers

Answer:

$7049 is the answer.

Step-by-step explanation:

Answer: $7980

Step-by-step explanation:

Follow the formula A=Pe^rt

A= 7500(e)^(.031)(2)

A= 7980

I need help super quick

Answers

Answer:   D is correct

Step-by-step explanation:

everything under the X side can be multiplied by 5 and equal Y

Answer:

C

Step-by-step explanation:

can someone help me please ​

Answers

Answer:

14c + 21d - 42

Step-by-step explanation:

One side of a triangle is two times the second side. The third side is 5 feet longer than the second side. The perimeter of a triangle is 49 feet. Find the length of each side.

Answers

Second side= x
First side = 2x
Third side = x+5
x+2x+x+5=49
4x=44
x=11

1st side= 22
2nd side = 11
3rd side = 16

What is the equation of the line that passes through the point (−2,1) and has a slope of -5/2

Answers

Answer:

You need to make turn this information into slope intercept form: y = mx + b. The m is your slope, the b is your y-intercept. x and y represents the coordinates that the line passes through. Make y = 1, make m = -2, and make x = 2, and you will get: 1 = -2(2) + b. When you simplify, you get 1 = -4 + b, add 4 to both sides and you'll get 5. So my equation is y = -2x + 5. Remember the -2 came from the slope! To get b, substitute the (2,1) in for (x,y) in the equation.

Step-by-step explanation:

What is the solution to this inequality?

6x−5>−29


​ x −4 ​

​ x>4

Answers

Answer:

x>4

Step-by-step explanation:

Answer: x>-4

Step-by-step explanation:

1. Add five to both sides [ this will cancel out the five ]

6x - 5 > -29

     +5    +5    

----------------------

6x > -24

2. Divide by six on both sides

6x > -24

----    ------

6         6

WHICH EQUALS

x > -4      

Cliff has some berries in his basket. He picks 15 more berries. Then he gives
away 28 berries to his friends Cliff now has 12 berries. How many berries did
cliff in his basket to start?

Answers

Answer:

15 berries

Step-by-step explanation:

The number of berries that cliff has in his basket to start will be 65 berries.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

Cliff has some berries in his basket. He picks 15 more berries. Then he gives away 28 berries to his friends Cliff now has 12 berries.

The number of the berries that cliff has in his basket to start will be given as,

⇒ 15 + 28 + 12

⇒ 15 + 40

⇒ 65

The number of berries that cliff has in his basket to start will be 65 berries.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ5

The area of
of a rectangle is (14x^4 + 7x^2) cm²
and its breadth is 7x^2 cm. Find its length.​

Answers

Answer:

2x^1+1

Step-by-step explanation:

Area=L X W

which means that (14x^4+7x^2) needs to be divided by 7x^2

factorise(14x^4+7x^2) which gives 7x(2x^2+1)

divide 7x(2x^2+1) by 7x^2

gives 2x^2 +1

Answer:

The area of a rectangle is (14x^4 + 7x^2) cm²

and its breadth is 7x^2 cm.

it's length is :---

[tex] = \frac{(14{x}^{4} + 7 {x}^{2})}{7 {x}^{2} } \\ = \frac{7 {x}^{2}(2 {x}^{2} + 1) }{7 {x}^{2} } \\ = (2 {x}^{2} + 1) \: c {m}[/tex]

(2x^2+1) cm is the right answer.

Using the diagram below, determine how many miles the school is from the store.
Store
x miles
School
16
miles
20 miles
Museum
how miles the school is from the store

Answers

The school to the store is 4 miles because 20-16 is equal to 4

What created the Vancouver Island?
O earthquake
O volcanoes
O fault
O ocean

Answers

Answer:

Volcano

Step-by-step explanation:

Answer:

volcanoes

Step-by-step explanation:

Vancouver island was formed around 150 million years ago when   volcanic activity pushed sedimentary rock upwards from the sea floor to from the island landscape.   /hope this helps/

2(1/4d)+d=96 answer is possibly 64 is that correct?

Answers

Answer:

64

Step-by-step explanation:

2x(1/4 d)+d=96 (Rewrite the expression)

2x1/4d+d=96 (Reduce the numbers)

1/2d+d=96(Calculate)

3/2d=96 (Multiply both sides)

d=64

PLEASE HELP MEEEE I HAVE AN F IN MATH AND I SERIOUSLY NEED THIS

Answers

Ok do u have a app I can send it Bc I did this

Please look at picture

Answers

6x - 7 = 4x + 7
2x = 14
x = 7

The answer is 7

What is 4 divided by 1/8

Answers

Answer:

32

Step-by-step explanation:

4/(1/8)

Which inequality is equivalent to -6x>30

Answers

Answer:

x > -5

Step-by-step explanation:

[tex] - 6x > 30 \\[tex] 6x < - 30 \\ \frac{ 6x}{ 6} < \frac{- 30}{ 6} \\ x < - 5[/tex]

Danny has an unknown number of used cars at his
business. He buys 327 more and figures out he now has a
total of 745. Write an equation to solve this scenario
using "c" for the unknown number of used cars. Then
solve the equation for c.

Answers

Answer:e

Step-by-step explanation:

Answer:

745 - 327= C      C = 418

Step-by-step explanation:

(Blank) x 1/6 = 5/6


I haven’t done this in a while so I need help.

Answers

Answer:

5

Step-by-step explanation:

Divide 5/6 by 1/6 to get 5 as your answer.


Solve for n.
2/3(1+n)=-1/2n

Answers

Basically what you do is that you first distribute 2/3 into 1 and n. So you’ll get 2/3+2/3n=-1/2n then you’ll multiply BOTH sides by 6 to eliminate the fractions because no one likes fractions. You’ll get 4+4n=-3n so then you’ll subtract 4 on BOTH sides and then you divide. And get n= -4/7 I hope this helps!!!

Steve and Andy are playing pool. After the break, Andy is solids which is numbers 1 through 7 (the number 8 ball is the last one to hit into a pocket). How many different combinations can he have for sinking his solids into the six pockets?

Steve ends up winning the game as he hit in all his striped pool balls (9 through 15) and the 8 ball. How many different combinations did he have in his victory?

Answers

______________________________

Andy's Combinations:= 7 Balls × 6 Pockets= 42 Different CombinationsSteve's Combinations:= 8 Balls × 6 Pockets= 48 Different Combinations

______________________________

3 + x, when the value of x is 15

Answers

Answer:

The answer is 18

Step-by-step explanation:

If you add 15 to 3 then you get 18

Hope this helps!!! :)

Answer:

x= -15

Step-by-step explanation:

I hope it's help you

If the distance from point P to point L is the same as the distance from point P to point C, then P is on

Answers

Answer:

This answer is C, it is on the perpendicular bisector of segment LC.

Draw any line segment P and L, then another point C anywhere, but the length needs to be the same as PL.  You will note that LC (if you connect those points) will become the perpendicular bisector to point P.

I hope that makes sense.....

Step-by-step explanation:

Add 34+(−212) using the number line. Select the location on the number line to plot the sum.

Answers

Answer:

Answer is explained below in the explanation section.

Step-by-step explanation:

Solution:

For this question, we need to have a number line, we can not make the number line here. As it will be very long. Instead, I have attached a number line from -11 to +11 for your understanding and explained it below. Please refer to the attachment below for the number line.

Number Line:

A number line is a line which contains all the numbers from negative infinity to positive infinity divided by a single number zero. It has two sides, left hand side and right hand side. A side left to zero contains all the negative numbers and a side right to 0 contains, all the positive numbers.

So,

We are asked to add 34 in (-212), we will get 178 but with the negative sign, and it will lie on the left hand side of the number line.

SO,

34 + (-212) = 34 - 212 = -178

Hence,

Our sum which is 178 will lie on the left hand side of the number line.

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