Mathematics High School

4x-5y=0
8x+5y=-60
what is the answer by substitution or elimination?

Answers

Answer 1
The answer is -5, -5 added by 5 cancels each other out. Then when you add 4x + 8x, you get 12x. So when you do 12x= -60, you get -5.
4x-5y=08x+5y=-60 What Is The Answer By Substitution Or Elimination?

Related Questions

What is the value of y in the equation 2(2y − 12) = 0? (5 points) a 4 b 6 c 7 d 8

Answers

Answer:

A-6

Step-by-step explanation:

Answer:

ans 6

Step-by-step explanation:

by expanding the equation,

4y-24=0

4y=24

y=6

-3(2x-3)= -5x+5 show your work

Answers

Answer:

x=4

Step-by-step explanation:

Hope this helps!

Plz, mark brainiest! ^.^

Answer:

x = 4

Step-by-step explanation:

Use the distributive property to distribute the -3 amongst the 2x and the -3 in the parenthesis. Once distributed you should have -6x + 9 = -5x + 5. Next, you want to get all like terms on the same side, and to do that you must swap the +9 and the -5x. When you swap these, you must 'flip' the sign and change 9 to -9 and -5x to 5x. Now the equation should look like this: -6x + 5x = -9 + 5.

Now just solve. After solving, it should look like this: -1x = -4. Now to get rid of the negatives. Just divide each side by negative one and your answer is x = 4.

Help pls ASAP thank you !!!

Answers

Answer:

I haven't learned this but I think it's D.

Step-by-step explanation:

On laisse tomber une balle d'une hauteur de 1m.
A chaque rebond, elle rebondit aux 3/4 de la hauteur d'où elle est tombée.
Quelle hauteur, en cm, la balle atteint-elle au cinquième rebond ? Donner une valeur approchée à l'unité près.

Answers

.......................

true or false im dumb sorry

Answers

Answer:

False

Step-by-step explanation:

Tell me if you need an explanation

Answer:

it's false.

4×4×4= 64.

5x-2x(x-1)=???????????????????????????????​

Answers

Answer:

7x-2x"2

Step-by-step explanation:

Answer:

it is

7x-2x^2

Step-by-step explanation:

5x+2x-2x^2 = 7x-2x^2

solve for a
15=3(a+7)

Answers

Answer:

a = -2

Step-by-step explanation:

15 = 3(a+7)

15 = 3a + 21

-6 = 3a

a = -2

A=-2 is the correct answer

Original price: $10 New price: $7
Is it a discount,
Or a mark up.

Answers

Answer:

discount

Step-by-step explanation:

goes under og price

Answer: 17

Step-by-step explanation:

A line is perpendicular to the line given by the equation - 8 = 2y + 3x. What is the slope of the perpendicular line? 3​

Answers

Answer:

2/3 is the slope of the perpendicular line

Step-by-step explanation:

1) put into slope-intercept form (y=mx+b)

-8=2y+3x

-2y=3x+8

y=-3/2x-4

2) the line is perpendicular so the slope will be opposite and the reciprical of the original slope.

so, because the original was -3/2, the new one is 2/3

Can someone please help me
Which value is equivalent to the expression 3^(-3)? *
A.1/27
B.1/9
C.-9
D.-27

Answers

Answer:

A. 1/27

Step-by-step explanation:

Write the value of 3 in the following number: 998.736I

Answers

Answer:

Hundreths 3 is in the hundreths

Step-by-step explanation:

Answer: 3 is in the (hundredths)

Explanation: because ‘1’ is in the ones place
‘6’ is in the tenths place
so ‘3’ is in the hundredths

What the solution to -8+x=3

Answers

Answer:

x=11

Step-by-step explanation:

We would add 8 to both sides of the equation, leaving us with x=11

-2g – 2m + 5, when g=-3 and m= 10

Answers

Answer:

9

Step-by-step explanation:

-2g- 2m+ 5

-2(-3) - 2(10) +5

6- 20+ 5

9

what is 1+1 first person gets brainlst if u get wrong no brainlst

Answers

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Please help meeeee :,(

Answers

Answer:

I pretty sure the answer is ASA, I hope it's right!

The equation y = 3.5 x − 210 y=3.5x−210 represents the profit made by a manufacturer that sells products for $3.50 each, where y is the profit and x is the number of units sold. what is the profit in dollars when 80 units are sold?

Answers

Answer:

the answer is c

Step-by-step explanation:

took the test

please help. i’ll give brainliest

Answers

Answer:

What amI looking for ?!?! I promise I will help you reply in the comments!!

Step-by-step explanation:

Answer: What is this question mabe I can help please write the question first.

Step-by-step explanation:

Simplify each expression.
2y+ (4 + 5y). 2d(3). Simplify those two please please answer i will give brainliest!

Answers

Answer:

7y + 4

Step-by-step explanation:

2y + 5y+4

add 2y and 5y

7y+ 4

Answer:

7y +4

Step-by-step explanation:

Open up the brackets ans collect your like terms and simplify the expression.

Two systems of equations are shown below:

System A
System B
3x + 2y = 3
−x − 14y = 1
−2x − 8y = −1
−2x − 8y = −1


Which of the following statements is correct about the two systems of equations? (1 point)

The value of x for System B will be one−third of the value of x for System A because the coefficient of x in the first equation of System B is one third times the coefficient of x in the first equation of System A.
The value of x for System A will be equal to the value of y for System B because the first equation of System B is obtained by adding −4 to the first equation of System A and the second equations are identical.
They will have the same solution because they represent the same lines when plotted on the coordinate axes.
They will have the same solution because the first equation of System B is obtained by adding the first equation of System A to 2 times the second equation of System A.

Answers

Answer:

The two linear equations represented in system A as :

3 x + 2 y =3   -------(1)

- 2 x - 8 y = -1  ------(2)

(1) × 2 + (2) × 3 gives

⇒ 6 x + 4 y - 6 x - 24 y = 6 -3

⇒ - 20 y = 3

⇒ y =

Putting the value of y in equation (1), we get

Two linear equation represented in system B is:

3.   -x - 14 y =1

4.   - 2 x - 8 y = -1

-2 ×Equation (3) + Equation (4)=

2 x +28 y- 2 x - 8 y= -2 -1

⇒ 20 y = -3

⇒y =

Putting the value of y in equation (3),we get

As Two system , that is system (A) and System (B) has same solution.

By looking at all the options , i found that Option (D) is correct. The two system will have the same solution because the first equation of System B is obtained by adding the first equation of System A to 2 times the second equation of System A.

if 3 pipes can fill the tank completely in 2 hour then when will 1 pipe fill the tank​

Answers

Answer:

6 hours

Step-by-step explanation:

what is the square root of 10 is the most possible and is 5 used to divide 25​

Answers

Answer:

√10 = 3.162

Step-by-step explanation:

The square-root of 10 is;

√10 = 3.162

A number divided by 5 has its last digit as 0 or 5

In this case 25/5 = 5   and the √25 = 5

where are the vertical changes, Horizontal change, and slope

Answers

Answer:

l don't understand your question.......sorry

Please help me 32 points
Problem
Choose the inequality that represents the following graph.

Answers

Answer:

im pretty sure its d

Step-by-step explanation:

pretty sure it’s d; i think

Caesar has $180 in his bank account. He needs a total of $2,000 to purchase his uncle's car. He earns $60 per day and says $50 of that amount each day. Which equation can be used to determine the number of days, D, he needs to work to reach his goal of $2,000?​

Answers

Answer:

Im not 100% sure because I dont have paper, but the answer is..YELLOW and Dark blue

Step-by-step explanation:

If this isnt the answer pls forgive me, and if you can pls gimme brainliest

What is the radius of the base of the cylinder below?

A cylinder with height of 36 inches and diameter of 42 inches.

inches

Answers

Answer:

21

Step-by-step explanation:

A department store sells a pair of shoes with an 87% markup. If the store sells the shoes for $193.21 then what is their non-markup price?

Answers

Step-by-step explanation:

87% + 100% = 187%

187% of original price = $193.21

100% of original price = $193.21 * (100/187) = $103.32.

The non-markup price is $103.32.

Answer:

87% + 100% = 187%

187% of original price = $193.21

100% of original price = $193.21 * (100/187) = $103.32.

The non-markup price is $103.32.

Step-by-step explanation:

A
Solve the triangle.
19.3
b
45°
105
B
a

Answers

The answer is 30 degrees

What is the area of the triangle?

48 in 2
28 in 2
96 in 2
24 in 2

Answers

Answer:

48 in^2

Step-by-step explanation:

To find the area of a triangle is (1/2)*base*height, so (1/2)*4in*24in = 2in*24in = 48 in^2.

Answer:

48 in2

Step-by-step explanation:

when finding area we use the equation A= 1/2bh

b meaning base and h meaning height

so for this we would use A= 1/2(24)(4)

multiply them both to get A=1/2(96)

and then take half of 96 to get 48

so the answer is 48in 2

Solve the inequality.
4x - 12 < 16

Answers

Answer:

x<7

I Believe

                     

You are making a salad. The ratio of olives to croutons is 5 : 3. You put 12 croutons in your salad. How many olives do you put in your salad?

Answers

Answer:

20

Step-by-step explanation:

12/3 (the number of croutons) = 4

Since 4 is your base number, you would multiply 4 x 5.

20 olives

Answer:

20

Step-by-step explanation:

Ratio of olives : croutons is 5 : 3.

If you put 12 croutons, you put 4 times the amount of croutons in the ratio since 12/3 = 4.

That means you must also put 4 times the number of olives.

4 * 5 = 20

Answer: 20

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