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3 years ago

Which expression below is equivalent to -3x+5(x+2)

Mathematics

1 answer:

kari74 [83]3 years ago

4 0

Answer:

Step-by-step explanation:

1.) Apply the distributive law

5x + 5 * 2

2.) Multiply the numbers

5 * 2 = 10 is equivalent to 5x + 10

3.) Group like terms

5x - 3 + 10

4.) Add/subtract the numbers

-3 + 10 = 7 is equivalent to 5x + 7

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Ten skeins of yarn will make 4 scarves. how many scarves can be made with 25 skeins of yarn?

ladessa [460]

If 10 skeins makes 4 scarves than if you multiply the skeins by 2 (20 skeins) it would make 8 scarves. There for dividing the skeins by 2 (5 skeins) it would make 2 scarves. So adding 20 skeins and 5 skeins you would get 10 scarves total

8 0

3 years ago

When the temperature stays the same, the volume of a gas is inversely proportional to the pressure of the gas. If a balloon is f

valkas [14]

Answer:

The new pressure of the gas is 42 pounds per square inches.

Step-by-step explanation:

When the temperature remains constant, the volume of a gas is inversely proportional to the pressure of the gas.

$V\propto \frac{1}{P}$

We can rewrite the above equation is

$\frac{V_1}{V_2}=\frac{P_2}{P_1}$ [at constant temperature]

At a pressure of 14 pounds per square inches, a balloon is filled with 93 cubic inches of gas.

The volume of the gas is decreased to 31 cubic inches.

Here,

$V_1$ = 93 cubic inches, $P_1$ = 14 pounds per square inches,

$V_2$ =31 cubic inches, $P_2$ = ?

$\frac{V_1}{V_2}=\frac{P_2}{P_1}$

$\Rightarrow \frac{93}{31}=\frac{P_2}{14}$

$\Rightarrow \frac{P_2}{14}=\frac{93}{31}$

$\Rightarrow {P_2}=\frac{93}{31}\times 14$

$\Rightarrow {P_2}=42$ pounds per square inches

The new pressure of the gas is 42 pounds per square inches.

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4 years ago

A basketball is shaped like a sphere as shown in the diagram. The basketball has a radius of 4.7 inches.

VMariaS [17]

Answer:

434.9

Step-by-step explanation:

The circumference is 29.53.

Hope that this helps!

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3 years ago

Sorry to bother you but I am so bad at math plz help

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Answer:

Step-by-step explanation:

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Answer:

120/2.5%

Step-by-step explanation:

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