Its substitution, and rearrangement you have to find x
y = 3x + 7 5x - 2y = -10​

Answers

Answer 1

Answer:

Step-by-step explanation: I dont know actually


Related Questions

Find the unknown side length. Write your answer in simplest radical form.

Answers

Answer: 1. x= 20 units,   2. x= [tex]5\sqrt{3}[/tex] units    3. x= [tex]4\sqrt{2}[/tex] units.

Step-by-step explanation:

In a right triangle,

[tex]Hypotenuse^2= Perpendicular^2+Base^2[/tex]  (Pythagoras theorem)

1. Hypotenuse = x , Base = 16, Perpendicular = 12

[tex]\Rightarrow\ x^2 =12^2+16^2\\\\ \Rightarrow\ x^2=144+256\\\\ \Rightarrow\ x^2=400\\\\ \Rightarrow\ x=\sqrt{400}=20[/tex]

2. Hypotenuse = 14 , Base = 11, Perpendicular = x

[tex]\Rightarrow\ 14^2=x^2+11^2\\\\\Rightarrow\ 196=x^2+121\\\\\Rightarrow\ x^2=196-121\\\\\Rightarrow\ x^2 = 75\\\\\Rightarrow\ x=\sqrt{75}=\sqrt{25\times3}=5\sqrt{3}[/tex]

3.  Hypotenuse = 9 , Base = x, Perpendicular =7

[tex]\Rightarrow\ 9^2=x^2+7^2\\\\\Rightarrow\ 81= x^2+49\\\\\Rightarrow\ x^2=81-49\\\\\Rightarrow\ x^2=32\\\\\Rightarrow\ x=\sqrt{32}=\sqrt{16\times2}\\\\\Rightarrow\ x=4\sqrt{2}[/tex]

Does this table represent a proportional relationship?

Yes
No

Answers

no

the table does not represent a proportional relationship.

A triangle, a square, and a circle lie in the same plane. What is the maximum possible number of intersections points that can occur?
PLEASE HELP ME NOW! IM FREAKING OUT I REALLY NEED AN ANSWER!!!

Answers

Answer:

The maximum possible is 20 intersections.

Step-by-step explanation:

PLEAS HELP I WILL GIVE 10 POINTS
ou are a high school senior with a part-time job at a retail store. Your employer pays you $9.75 per hour. Last week, you worked a total of 30 hours.

The following payroll deductions were taken from your gross pay:

Federal income tax (withholding) at 10%
Social Security tax at 6.2%
Medicare tax at 1.45%
Use the check stub below to help you think through the problem.

You are encouraged to use scratch paper or Chrome Canvas as a scratch pad. You are allowed to check your calculations with a calculator.

check stub

The amount for SOCIAL SECURITY TAX for this pay period was $

Answers

Answer:

292.32

Step-by-step explanation:

i took 9.75 times 30 and then minus 10% minus 6.2% and minus 1.45% and got that answer

PLEASE CAN SOMEONE HELP ME???

Answers

Answer:

-8,4 and 4,-5

Step-by-step explanation:

HELP ASAP PLEASE!!
what is the distance (in units) between points C and D? round your answer to the nearest hundredth.

1) 4.54 units
2) 5.00 units
3) 5.83 units
4) 34.00 units

Answers

Answer:

2

Step-by-step explanation:

It’s 5, just count the numbers lol

PLSSS HELPPP. What is the domain and range of the relation {( -4,2), (-9,-5),(-4,12),(8,-8)}

Answers

Answer:

The domain is;

{-4,-9,-4,8}

The range is

{2,-5,12,-8}

Step-by-step explanation:

The domain refers to the values of the function on the x-axis while the range refers to the values of the function on the y-axis

The domain is thus;

{-4,-9,-4,8}

The range is;

{2,-5,12,-8}

Help me fast and you get 10 points

Answers

Answer:

The percent of discount is 35%

Step-by-step explanation:

What should you do when you see an animal on the road in front of your car?

Answers

Answer:

it depends. If you are driving really fast then hit it. Your life matters more than the animal. But if you are driving slow, then try to stop as long as there isn't anyone behind you.

Step-by-step explanation:

NEVER SWERVE OFF THE ROAD

Answer: Grab a towel or a piece of clothing and wrap it around the animal to protect it from harmful virus’s and diseases we might transmit to them. Then walk 30 feet away from the road and carefully place the animal on flat ground.

Step-by-step explanation: Hope this helps! Btw, I found this from an instructional video I found. So I don’t take any credit. ;)

Find the 7th term of the following arithmetic sequence. a1 = -12, d = 2

Answers

Answer:

The 7th term is 0

Step-by-step explanation:

Arithmetic Sequences

The arithmetic sequences are identified because every term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.

The equation to calculate the nth term of an arithmetic sequence is:

[tex]a_n=a_1+(n-1)d[/tex]

Where

an = nth term

a1 = first term

d   = common difference

n  = number of the term

We are given the first term a1=-12 and the common difference d=2. Let's find the 7th term (n=7):

[tex]a_7=-12+(7-1)2[/tex]

[tex]a_7=-12+12=0[/tex]

The 7th term is 0

Population density is the number of people per unit of area. The population density of a certain region is 50 people per square kilometer. If the region covers 25 square​ kilometers, what is the population of the​ region?

Answers

Answer:

1250 people

Step-by-step explanation:

Population density = total population / land area

Population density = 50

total population = x

land area 25

50 = x / 25

x = total population = 50 x 25 = 1250 people

which list has the angles of ABC in order from smallest to largest ?

Answers

Answer:

Answer choice A (<A,<B,<C)

Step-by-step explanation:

I have attached a rough drawing of this type of triangle (not to scale)

The longest side of the triangle is always the side opposite of the largest angle. Since side AB is the longest, we know that angle C is the largest angle.

This is also true for the smaller angle. The smallest angle is always opposite the shortest side. The shortest side is side BC. The angle opposite this side is angle A, meaning angle A is the smallest.

Hope this helps :-)

Select ALL that apply.​

Answers

Answer:

your picture is not loading for me

The slope is -4 so A, B, D is not the answer
The answer is C and E

please help will give brainliest

Answers

Answer:

C

Step-by-step explanation:

AE = 14.6 I think. If I'm wrong, use whatever number it is.

Sin(x) = 5/14.6

Sin(x) = 0.3425

x = Sin-1 (0.3425)

x =20.03

Now the other larger triangle has an acute angle of 90 -20.03 =  69.97

===================

Cos(69.97) = 13.1/DE

DE = 13.1/cos(69.97)

DE = 38.25

What formula would you write for this line?

Answers

Answer:

i was able to get y = 1.3x - 2

y=1.3x -2 is the answer

An equiangular triangle has one angle of measure 2x+8. What is x?

Answers

Answer:

[tex]x=26\\[/tex]

Step-by-step explanation:

The sum of the interior angles of a triangle add up to [tex]180^{\circ}[/tex]. Therefore, an equiangular triangle will have each of its angles equal to [tex]60^{\circ}}[/tex]. We can then set up the following equation:

[tex]2x+8=60, \\2x=52, \\x=\fbox{$26$}[/tex].

Answer: x=10

Step-by-step explanation:

Student Council needs $600 for the

spring dance. They only have $210 in the

treasury. The Student Council decides to raise

the rest by selling chocolate lollipops for a $1.50

profit per lollipop. Write and solve an equation

the Student Council could use to find the

number of chocolate lollipops, c, the Student

Council must sell to have the money for the

spring dance.

Answers

Answer:

$490

MARK ME AS BRAINLY

#Carry On Learning

What is the constant of proportionality in the equation y = 5/3x?

Answers

Answer:

x = 98

Step-by-step explanation:

If the lengths of the sides of a
Switzerland flag are 10 ft, what is the area of the flag?

Answers

If all sides are 10 ft then 10 x 10 = 100sqf

Anybody know the answer??

Answers

Answer:

Graph (A) represents y=x

~ Hi ~ wonderful ~ people! ~ Can ~ you ~ please ~ help ~ me ~ on ~ this ~ question? ~

Answers

Answer:

49π ft²

Step-by-step explanation:

The area for a circle is A=πr² (Area=pi times radius squared)

and d=2r (diameter = 2 times the radius)

So, if we want to find area using the radius, we can get rearrange the equation d=2r to get r= d/2

r=d/2

r=14/2

r=7 ft

Then we can plug that answer into the area equation.

A=π×7²

7 squared is 49 so

A=49π ft²

how big is a 150 x 150 home lot?

Answers

Answer:

22500

Step-by-step explanation:

150 x 150 will be 22500

43,560 square feet = 1 acre

150 x 150 = 22,500 square feet = 0.517 of an acre (rounded)

i need help with this can you show me some work so i can do it by my self after

Answers

Answer:

Step-by-step explanation:

1) √36 = 6

2) ^3 √8 = 2

3) ^3 √64 = 4

Select the best method of finding an accurate solution to a system of linear equations.

A:use algebraic methods
B:graph the lines
C:guess and check

Answers

A.use algebraic methods

Solve for Y


-6x-2y+8

Answers

Step-by-step explanation:

-6x-2y+8

-6x -6x

÷-2 (-2y=-6x+8)

3x=-4

x= 3x

y= -4

y=-4-3x

Help please due now!

Answers

Answer:

90

Step-by-step explanation:

x•y-z²

x=9,y=14,z=6

9 • 14 - 6²

126-36=90

please help me fr im struggling

Answers

Answer:

x = 3

m<PAW = 1

Step-by-step explanation:

☆They are supplementary angles.

☆Supplementary angles equal 180 degrees.

[tex] - 11x + 17 3 - 1x + 43 = 180 \\ - 12x + 216 = 180 \\ \frac{ \: \: \: \: \: \: \: \: \: \: \: \: \: - 216 = - 216}{ \frac{ - 12x}{ - 12} = \frac{ - 36}{ - 12} } \\ x = 3[/tex]

☆Plug in for m<AEZ

[tex] - 1(3) + 4 \\ - 3 + 4 \\ 1[/tex]

☆m<PAW is corresponding to m<AEZ

☆Corresponding angles are congruent.

☆m<PAW equals 1.

1176cm to cubic centimeters

Answers

Answer:

2261.54 cubic cm.

Step-by-step explanation:

So 1 cm is equal to .52 cubic cm. So if we take 1176 and divide it by .52 we get 2261.538462. Which is a crazy number, so we round. So 1176 cm = 2261.54 cubic cm. I'm pretty sure that this is correct, good luck! ;)

Please help me I really need help the picture is above.

Answers

Answer:

Quick

Step-by-step explanation:

Factor -45x - 18 using the greatest common factor. Do not use spaces in your answer

Answers

Answer:
-9(5x+2)

Step by step explanation:
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