True or false. to solve y in the equation 2x y=5, subtract 2 from both sides of the equation

Mathematics

1 answer:

gladu [14]4 years ago

3 0

True. To solve for y you have to subtract 2 from both sides of the equation.

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A company rents water tanks shaped like cylinders. Each tank has a diameter of 8 feet and a height of 3 feet. The cost is $5 per

BARSIC [14]

Answer:

$754.05

Step-by-step explanation:

We have to find the volume of one tank and multiply it by the cost of renting the tank per cubic foot.

The volume of a cylinder is:

$V = \pi r^2h$

where r = radius

h = height

Each tank has a diameter of 8 feet (radius = 4 feet) and a height of 3 feet.

The volume of the tank is therefore:

$V = \pi * 4^2 * 3 = 150.81 ft^3$

The cost of renting is $5 per cubic foot.

Therefore, the cost of renting a tank is:

150.81 * 5 = $754.05

It costs $754.05 to rent a tank.

4 0

4 years ago

Bhavik bought 3 liters of milk and 5 loaves of bread for a total of $11. A month later he bought 4 liters of milk and 4 loaves o

Greeley [361]

Let the price of 1 liter of milk be m, and let the price of 1 loaf of bread be b.

3 liters of milk cost 3m.
5 loaves of bread cost 5b.
The total is $11.
That gives us the first equation:

3m + 5b = 11

4 liters of milk cost 4m.
4 loaves of bread cost 4b.
The total is $10.
That gives us the second equation:

4m + 4b = 10

We have a system of two equations.

3m + 5b = 11
4m + 4b = 10

Multiply the first equation by -4.
Multiply the second equation by 3.
Then, add the equations.

-12m - 20b = -44
+ 12m + 12b = 30
---------------------------
-8b = -14

b = 14/8 = 7/4 = 1.75

Now substitute b with 1.75 in the first original equation.

3m + 5b = 11

3m + 5(1.75) = 11

3m + 8.75 = 11

3m = 2.25

m = 0.75

Answer: A liter of milk costs $0.75, and a loaf of brad costs $1.75.

6 0

4 years ago

State whether the given measurements determine zero, one, or two triangles.. . C = 30°, a = 32, c = 16

Nat2105 [25]

Sin(A) / a = Sin(C)/c
Sin(A) = a * Sin(C)/c
Sin(A) = 32 * Sin(30)/16
Sin(A) = 32 * 0.03125
Sin(A) = 1

A = 90°

By the law of sines, angle A must be 90 degrees. That makes side a the hypotenuse of a 30-60-90 triangle. There is only one triangle. The third side is 16√3, and the third angle 60°.

6 0

3 years ago

What is the sqaure roots for -196

topjm [15]

Answer:

if -196 was positive, it could be 14 or -14, but because it is negative, it is considered infinity or unknown

8 0

3 years ago

Simplify (36/81) raised to the power -1/2

rosijanka [135]

Step-by-step explanation:

Hey, there!!