MATHEMATICS MIDDLE SCHOOL

HELP !!! Use the elimination method to solve the system of equations. 4x + 3y = 11
x - y = 8

Answers

Answer 1

Answer:

Answer:

C. (5, -3)

Step-by-step explanation:

4x + 3y = 11

x - y = 8 (multiply by 3) --> 3x - 3y = 24

4x + 3y = 11

3x - 3y = 24

---------------------add

7x = 35

x = 5

5 - y = 8

y = 5 - 8

y = -3

(5, -3)

Answer 2

Answer:

Answer:

C. (5, -3)

Step-by-step explanation:

Rewrite the first equation.

Multiply the second equation by 3 and write it under the first equation.

4x + 3y = 11

3x - 3y = 24

Now add the equations.

7x = 35

Divide both sides by 7.

x = 5

Substitute 5 for x in the original first equation:

4(5) + 3y = 11

20 + 3y = 11

3y = -9

y = -3

Solution: (5, -3)

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What goes into 49 and 50 evenly

Answers

nothing, goes into 49 and 50.

7x7=49 and 5x10=50 to let you know

A cylindrical water tank has a diameter of 20 feet and a height of 15 feet. How much water is needed to fill the tank?Recall the formula V = pi r squared h.
300Pi cubic feet
1,500Pi cubic feet
2,250Pi cubic feet
6,000Pi cubic feet

Answers

1500 cubic feet water is needed to fill the tank. Option B.

Step-by-step explanation:

Given,

The diameter of the cylindrical water tank is 20 ft.

So, the radius (r) = 10 ft

Height (h) = 15 ft

To find the water to be filled in the tank we need to find out the volume.

Formula

volume of cylinder (V) = πr²h

Now,

Putting the values of r and h in the given formula we get,

V = π×10²×15 = 1500π cubic feet

Hence,

1500 cubic feet water is needed to fill the tank.

Answer:

Step-by-step explanation:

Please help me! im literally desperate! math is soooo hard! help me pls <3Pics down below!

Answers

Answer:

its the multiplication property

Step-by-step explanation:

The points (4,t) and (5,-
4) fall on a line with a slope of
-
7. What is the value of t?
t=

Answers

Answer:

t = -3

Step-by-step explanation:

To answer this problem, first you have to know how to calculate the slope of a line. Since we know that y1-y2/x1-x2 is the equation to calculate slope, we are ready to tackle this problem.

Because y1 is t, y2 is 4, x1 is 4, and x2 is 5, we can now plug this in to our equation. The equation becomes t-4/4-5. And because we know the slope is 7, the equation is now (t-4)/(4-5)=7. If you solve this equation, you will get that t=-3

Evaluate the expressions 3x-2 and 4x+4 for the following value of x.

Answers

Question:

Evaluate the expressions 3x - 2 and 4x + 4 for the following values of x. When you have found the value for each expression, write a statement using <, >, or = that shows how the two values are related. a. x = 0 b. x = -6 c. x = 5 d. x = -2

Answer:

Part a: $4x+4>3x-2$