What is the y-coordinate of the solution to this system of equations?
5x-8y=1
3x+6y=-21

Answers

Answer 1

5x-8y=1...(1)
3x+6y=-21...(2)

(1)*3:
15x-24y=3...(3)

(2)*5:
15x+30y=-105...(2)

(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2

Related Questions

17
32
What is 17/32 as a decimal?

Answers

Answer:

0.53125

Step-by-step explanation:

17/32 equals 0.53125

You are choosing between two health clubs Club A offers membership for a fee of $20 plus a monthly fee of $24 Club B offers membership for a fee of $14 plus a monthly fee of $27 After how many months will the total cost of each health club be the same ? What will be the total cost for each club ? Videos

Answers

Answer:

x

=

5

, so after five months the costs would equal each other

Step-by-step explanation:

Find the least common multiple of 5, 2, and 6.
.
X
?

Answers

Answer:

30

Step-by-step explanation:

When all the kids who tried out for the Little league were divided into teams of 16 players, there were exactly 8 teams. How many kids tried out?

Answers

Answer:

128

Step-by-step explanation:

16 x 8 = 128

Answer:

128

Step-by-step explanation:

you multiply 16 and 8 because each team has 16 and there are 8 teams so, 16×8=128

What is the diameter of a sphere with a volume of 78006 in?

Answers

Answer: 53.0

Step-by-step explanation:

Then the diameter equals 53.0122774

The diameter of the sphere is 53.01 inch

What is a Sphere?

A sphere is symmetrical, round in shape. It is a three dimensional solid, that has all its surface points at equal distances from the center. It has surface area and volume based on its radius. It does not have any faces, corners or edges.

The Surface Area of a Sphere = 4πr²

The Volume of a Sphere = ( 4/3 ) πr³

where r is the radius of the sphere

Given data ,

Let the diameter of the sphere be = d

The radius of the sphere be = r

The volume of the sphere is V = 78006 inch³

The Volume of a Sphere = ( 4/3 ) πr³

Substituting the values in the equation ,we get

( 4/3 ) πr³ = 78006 inch³

Now , Multiply by ( 3 / 4 ) on both sides , we get

πr³ = ( 78006 x 3 ) / 4

     = 58504.5 inch³

Divide by π on both sides , we get

r³ = 58504.5 / π

   = 18622.56 inch³

Taking cube roots on both sides , we get

r = 26.506 inch

So , the radius of the sphere is r = 26.506 inch

Now , the diameter of the sphere is d = 2 x r

                                                               = 2 x 26.506

                                                               = 53.01 inch

Hence , The diameter of the sphere is 53.01 inch

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What factor is missing? 24 + 12= ____(8+4)

Answers

3
Aoggianaiqos Ajaxzjka

Answer:

3

Step-by-step explanation:

24 + 12 = ___(8+4)

36 = ___(12)

36/12 = 3

The following expression represents the profit made by John as he mows lawns: P = 20L
- 100
Which description correctly interprets each part of the expression?

Answers

its c because i already did that and got it right

6+(9-1)2 divided by 4x (1/2)

Answers

Answers:

Here you go, hope this helps

Step-by-step explanation:

6+2x

Find the least common
multiple of 12 and 48.
144
48
32
96

Help

Answers

Answer:

Step-by-step explanation:

48

Answer: 48

12×4=48
48x1=48
These are the smallest out of all of them

What does the enlargement look like and what are the coordinates?

Answers

Answer:

(-6, -3) (-3,-3) (-3,-6)

Step-by-step explanation:

Multiple all of the vertices by 1.5.

(-6, -3) (-3,-3) (-3,-6)

Hope I helped!

[enlargment will still be a triangle]

Hello Brainly pleas help

Answers

Answer:

can you take a better pick

Step-by-step explanation:

3 units easy cuz 1.5 from A to zero and 1.5 feom zero to B.

Which expression is equivalent to 18 - 20
O 18+(-20)
18 - (-20)
-18 + 20
- 18 - 20

Answers

A. 18 + (-20)

Hope this is right

answer: a. 18 + (-20)

explanation: adding a negative is the same as subtracting a positive

What is the value of y?

Answers

I think it’s b but I’m not sure
B is the answer
please give me points

Lluvia got $100 from her grandparents for her birthday. She has a weekly after school babysitting job. She earns $40 per week from her babysitting job.

A. If she does not spend any of her money, write an algebraic expression that shows how much money she has after w weeks.
B. How much money will she have after 10 weeks.
C. Alex thinks the expression 10 (40w + 10) is represents the. total amount of money Lluvia will have after w weeks. Explain whether or not Alex is correct.

Answers

Answer:

A. Y= 40w+100

B.  $500

C. That would make her $400 per week plus the 100 dollars from her grandparents

Step-by-step explanation:

A rectangle and 2 congruent quarter circles were used to make the figure shown. Which measurement is closest to the area of the figure in square centimeters?

Answers

Answer:

109.3

Step-by-step explanation:

The area of the figure in square centimeters is 89.6 cm².

What is Area?

Area is the entire amount of space occupied by a flat (2-D) surface or an object's shape. The area of a plane figure is the area that its perimeter encloses. The quantity of unit squares that cover a closed figure's surface is its area.

Given:

We have the figure consist of rectangle and 2 quadrants.

Then to calculate area of figure

= Area of 2 quadrant  +  area of rectangle

So,  Area of 2 quadrant = 2 x πr²/4 = πr²/2

                                        = 3.14 x 5² /2

                                        = 19.625 cm²

and, area of rectangle= l x w= 7 x 10 = 70 cm²

Thus, area of figure

= Area of 2 quadrant  +  area of rectangle

= 19.625 + 70

= 89.625 cm²

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Digital Lesson
Sam does 11 jumping jacks in 8 seconds. If he does the jumping jacks at a constant rate, how many
jumping jacks can he do in 20 seconds?

Answers

Answer:

about 28

Step-by-step explanation:

Mahir ' in ağırlığının feride' nin ağırlağına oranı 9/4 'tür.
Mahir' in ağırlığı 81 kg olduğuna göre feridenin ağırlığı kaç kg'dir? (acil soru) ​

Answers

this looks like gibberish bahahaha

Tickets to a movie cost $7 for adults and $5 for students . A group of friends purchased 8 tickets for $52, write a system of equations to represent this situation

Answers

7 x 6 = $52
there will be no kids attending haha.


the price of a furniture is $250. the sales tax rate is 8.5%. what is the amount of the sales tax for this piece of furniture? a. $20.50. b. $29.41. c. $17.05. d. $21.25

Answers

Answer:

d

Step-by-step explanation:

please help me please i really need help please

Answers

The answer should be the 4th one....

Manuel is preparing to run in a race. He has developed a training program in which he increases his running distance each day. If he continues to follow the same pattern, what distance will he run on the fifth day.
Day 1 -- 1 mile
Day 2 -- 2 miles
Day 3 -- 4 miles
Day 4 -- 7 miles

A.) 8 miles
B.) 9 miles
C.) 11 miles
D.) 14 miles

Answers

Answer:

c

Step-by-step explanation:

c)11 miles

the day and the miles on that day add together to make the miles for the next day so 4+7=11

Solve for X.
Х
3 ft.
6 ft.
9 ft.

Answers

I’m pretty sure the answer is 4,232

Given g(x)
=
3x + 6
2
and g(x) = 15, solve for x.

Answers

Answer:

=x?15

Step-by-step explanation:

Answer:

hhhhh

Step-by-step explanation:

What is the zero of the function ?

Answers

Answer:

The zero of a function is any replacement for the variable that will produce an answer of zero. Graphically, the real zero of a function is where the graph of the function crosses the x‐axis; that is, the real zero of a function is the x‐intercept(s) of the graph of the function.

Step-by-step explanation:

A scientist wants to predict the number of nitrates in the river. Which sample is better for making this prediction?
Sample A: A random sample of 5 gallons of water from one location in the river
Sample B: A random sample of 5 gallons of water from five different locations in the river

Answers

Answer:

Sample B: A random sample of 5 gallons of water from five different locations in the river

Step-by-step explanation:

a championship swimmer swims 20 meters in 10 seconds. what is his speed

Answers

Answer:

his speed is 2 meters per second

Answer:

his speed is 2 meters per second

Step-by-step explanation: none

PLZZZZZZZZ HEPL ME TYSM PLZZZZ 40PTS

Answers

Answer:

that makes no sense call your teacher for helpy

Yea your teacher doesn’t make since

Can someone help please?

Answers

Answer:

25 is the correct answer

Arrange these in increasing order

Answers

Answer:

so least to greatest? 1/4 1/3 1/2

Answer:

1/4, 1/3, 1/2

Step-by-step explanation:

Which of the following best describes a triangle with one right angle and two congruent sides?
A right scalene triangle
B. acute scalene triangle
C. right isosceles triangle
D acute isosceles triangle

Answers

Answer:

C

Step-by-step explanation:

A is impossible. You cannot have both a right triangle and in the same triangle have an angle in it that is over 90 (that's the meaning of scalene)

B is sort of true, but only sort of. All scalene triangles have an angle over 90 and 2 acute angles.

C this is the answer to the question. It has 1 right angle and 2 equal sides. The two equal sides make it isosceles and the right angle is given.

D an acute triangle has three angles under 90 that add to 180. Not the right description.

A triangle with one right angle and two congruent sides is described as a "right isosceles triangle." (Option C)

Let's break down the terms:

1. Right Angle: A right angle is an angle that measures exactly 90 degrees.

2. Isosceles Triangle: An isosceles triangle is a triangle with at least two sides of equal length (congruent sides).

3. Right Isosceles Triangle: A right isosceles triangle is a special type of isosceles triangle where one of the angles is a right angle (90 degrees) and the other two angles are equal, each measuring 45 degrees.

In a right isosceles triangle, the two congruent sides are the legs of the right triangle, and the third side (opposite the right angle) is called the hypotenuse.

So, among the given options, the best description for a triangle with one right angle and two congruent sides is a "right isosceles triangle" (Option C).

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