Mathematics High School

Solve the given system by substitution.

Solve The Given System By Substitution.

Answers

Answer 1

Answer:

(2, 8)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

r = 4s

r = 1/2s + 7

Step 2: Solve for s

Substitution

Substitute in r:                                4s = 1/2s + 7Subtract 1/2s on both sides:          7/2s = 7Divide 7/2 on both sides:              s = 2

Step 3: Solve for r

Define equation:                    r = 4sSubstitute in s:                       r = 4(2)Multiply:                                  r = 8
Answer 2

Answer:

s = 2

r = 8

Step-by-step explanation:

subsitution is were you plug in a systerm into the other problem

since they give you R = 4s you take 4s and plug it in were r is in the other equation (subsitution)

so now you have 4s = 1/2s+7

now you want to solve for s so your going to subtract 1/2s from both sides to cancle out the 1/2s --> 4s - 1/2s = 7 --> 3 and 1/2s = 7

now divide both sides by 3 1/2 to get s alone s = 7/3 and 1/2

s = 2

now we have s we take that and plug it into r = 4s

subsitute S as 2  --> r = 4(2)

r = 8

Related Questions

Simplify the expression: *
5(-2n + 4) + 2(n + 3)

Answers

Answer:

26- 8n

Step-by-step explanation:

-10n + 20 + 2n + 6

-10n+2n +6 +20

-8n + 26

Best regards

Answer:

-8n+26

Step-by-step explanation:


Multiply : 3/4 x -1/6

A -1/8
B 12/6
C 1/8
D -12/6

Answers

Your answer to this question is A. -1/8
You welcome ☺️

Consider the following equation.
9x + 3y = 6
On a recent Algebra test, Brian was asked to rewrite the equation in slope-intercept form
The slope of the equation is
The y-intercept is

Answers

Answer: The slope is -3 and the y- intercept is (0,2)

Step-by-step explanation:

1. 2x+5(6x-9)=179
2. -40=6x-5(-4x-18)
solve for X​

Answers

Answer:

1. x = 7

2. x = -5

Step-by-step explanation:

1. Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation: 2*x+5*(6*x-9)-(179)=0

Pull out like factors  6x - 9  =   3 • (2x - 3)

 (2x +  15 • (2x - 3)) -  179  = 0

Pull out like factors: 32x - 224  =   32 • (x - 7)

Solve: x-7 = 0

Add  7  to both sides of the equation  = 7

2. Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation: -40-(6*x-5*(-4*x-18))=0

Pull out like factors: -4x - 18  =   -2 • (2x + 9)

 -40 -  (6x -  -10 • (2x + 9))  = 0

Pull out like factors:  -26x - 130  =   -26 • (x + 5)

-26 • (x + 5)  = 0

Solve: x+5 = 0

Subtract  5  from both sides of the equation: x = -5

Hope this helps! Please mark as brainliest.

Thanks!

PLZ HAAAALP
One winter day, the temperature was -15°F. Later that day, the temperature rose 12°F to reach the high temperature for the day. If t represents the high temperature, what is t?

Answers

Answer:

-3°F

Step-by-step explanation:

-15 + 12 = -3

Answer:

-3

Step-by-step explanation:

what is the difference between 6204 and 5735​

Answers

Answer:

469

Step-by-step explanation:

Difference = subtraction6,204 - 5,735 = 469

I hope this helps!

the difference is 469

if henry has 8 apples , and josh ate 5 . how many apples does henry have?

Answers

Answer:

Henry has 3 apples

Step-by-step explanation:

PLEASE HELP FAST BOTTOM ONE!!! I WILL GVIE EXTRA POINTS AND BRAINLIST!

Answers

Answer:

40

Step-by-step explanation:

A kilometre is 1000 metres.  1000 / 25 = 40.  So forty basketball courts would be approximately 1 km if lined up end to end.

The answer is 40 because 1 kilometer divided by 25 meters would be 40 and each court is 25 meters so that is 40 courts in 1 kilometer.

HELP! I’ll give out a free 50points if someone helps me with this and I’ll mark brainliest

Answers

Answer:

B

Step-by-step explanation:

hope this helps ^^

Answer:

B is the correct answer

Step-by-step explanation:

Edit: Woops it was already answered... sorry!

The price of mangoes in a grocery store is 3 for $5. How much will 5
mangoes cost? Round the answer to the nearest hundredth.

Answers

Answer:

8 and one thirds

Step-by-step explanation:

5 times 5 is equal to 25 and 25 divided by 3 is 8.3333

Answer:

$8.33

Step-by-step explanation:

So, to figure out how much one mango costs, I did $5 divided by 3, which gave me 1.66.

I then multiplied that by 5 to see how much 5 mangos cost, and I got $8.33

What is the y-intercept of -x + 4 = y? *

Answers

Answer:

4

Step-by-step explanation:

Im sure it is as y=mx +c c being the interceot and mx as the gradient

Answer:

(0,4)

Step-by-step explanation:

this is dueeeeeee tomorow please help

Answers

Answer:

What’s the question?

Step-by-step explanation:

12 people in line at an ice-cream shop 8 ordered cones with 2 scoops of ice cream the rest ordered cones with 1 scoop what is the ratio

Answers

Answer:

2:1

Step-by-step explanation:

Create a word problem where the expression is: 7f + 20

Answers

Answer:

A man is selling his old special dishes for 7 dollars each. You have to pay 20 dollars down for the case that holds the dishes no matter how many you buy.

A dog sitter makes 20 dollars just to bring their own leashes and food for dogs that they watch. They also make 7 more dollars per hour that they have to watch the dog.

Step-by-step explanation:

Let x=
-
11
8
and y=
11
4
0
Which expression has a negative value?
Copyright 2017 Open Up Resources
Select one
OA. x+y
OB. xy
OC. x.y
OD. x/y

Answers

Answer:

OD. x/y

Step-by-step explanation:

Which graph shape represents the polar curve r = 1 + 4sin(θ)?
a cardioid
a rose curve
a limaçon with an inner loop
a limaçon without an inner loop

Answers

Answer:

A cardioid

Step-by-step explanation:

A cardioid is a curve in the shape of a heart traced by a point on the circumference of a circle as it rolls around a fixed circle of the same radius.

The equation of vertical cardioid is [tex]r=a[/tex] ± [tex]a\sin \theta[/tex]

Given the polar curve is [tex]r=[/tex] [tex]1+[/tex] 4 [tex]\sin \theta[/tex]

This is an equation of vertical cardioid.

So, it represents a cardioid.

Answer:

C - a limaçon with an inner loop

Step-by-step explanation:

If you have a graphing calculator, use it to plug in the equation.

Based on what you have learned, you will recognize the graph is C

whats the solution ​

Answers

Answer:

Step-by-step explanation:

To find the center and the radius, we need to put the equation in the (x-a)^2+(y-b)^2=r^2 [a is the x-coordinate, b is the y-coordinate, and r is the radius].

(x+6)^2+(y+7)^2 - 36 - 49 + 69 = 0

(x+6)^2+(y+7)^2 - 16 = 0

(x+6)^2+(y+7)^2 = 16

(x+6)^2+(y+7)^2 = 4^2

The center is (-6,-7) and the radius is 4.

Hope this helps!

I need the answers to #1,#2 and #3

Answers

The answers are #1 45 #2 24 #3 10

solve for x
1. 6
2. 4
3. -5
4.-10

Answers

The answer I think is 6

help Plzz!!!!!!!!!!!!!

Answers

Answer:

$0.27

Step-by-step explanation:

Dividing 3.78 and 14 would get you 0.27 which is the unit price per tangerine.

$0.27
Is the right answer

What is the volume of a rectangular prism that is 8 inches long, 2 inches wide, and 4 inches high?

Answers

Answer:

64 in³

Step-by-step explanation:

8 x 4 = 32, 32 x 2 = 64 :D

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Solve-1 + 8 =
10 - 3a.

Answers

Answer:

a = 1

Step-by-step explanation:

Original Equation:

-1 + 8 = 10 - 3a

Add 1 to both sides

8 = 11 - 3a

Subtract 11 from both sides

-3 = -3a

Divide both sides by -3

a = 1

Hope this helps :)

Please consider Brainliest :)

Answer:

a = 1

Step-by-step explanation:

-1 + 8 = 10 - 3a

   7 = 10 - 3a

 -10    -10

-3 = -3a

----   -----

-3     -3

1 = a

This is ratios please help asap. I will give brainliest if you got it correct

Answers

Answer:

The Ratio is 12 - 3

Step-by-step explanation:

There are 12 bicycles and 3 scooters so the ratio is 12 -3 or if simplified 4-1

Answer:I say A because the ration is 12:3

Step-by-step explanation:

HELP PLEASE what;s the slope of the line?

Answers

Answer:

u didnt even send an attachment

Step-by-step explanation:

8 4/5 ÷ 4 = ?
The principal is equally distributing 8 4/5 cakes on 4 tables for a school party. How many cakes are on each table?

Answers

Answer:

Step-by-step explanation:

8 4/5 divided by 4= 2.2

4. A formula used for calculating velocity is v=1/2at^2

Answers

Step-by-step explanation:

You're sure?

But I thought that for calculating distance

State the slope and the y-intercept for the graph of the equation. -x+y=4​

Answers

Answer:Step-by-step explanation:

slope is 1

y intercept is 4

equation y= 1x+4

sin 70 in surf form​

Answers

Step-by-step explanation:

Calculate sin(70)°

Determine quadrant:

Since our angle is between 0 and 90 degrees, it is located in Quadrant I In the first quadrant, the values for sin, cos and tan are positive.

Determine angle type:

70 is an acute angle since it is less than 90°

sin(70) = 0.93969262030844

Write sin(70) in terms of cos

Since 70° is less than 90,

we can express this in terms of a cofunction

sin(θ) = cos(90 - θ)

sin(70) = cos(90 - 70)

sin(70) = cos(20)

20 POINTS the perimeter of a semicircular disc whose diameter is 28 cm.

Answers

87.96 cm

I hope this helped out! Have a nice day :)

Answer:

87.96 cm

Step-by-step explanation:

I had this answer up but it got deleted for sum reason....

I don’t understand please help

Answers

Answer:

option C is the correct answer

Step-by-step explanation:

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