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3 years ago

25 points! I don't need an answer, just an explanation of how to do it. 1-(-3)

Mathematics

2 answers:

user100 [1]3 years ago

4 0

Step-by-step explanation:

When you are subtracting a negative number from a positive number, the negative - sign will always turn into a positive + sign.

So in this case, you would cancel out the negative - signs and put in a positive + sign: 1-(-3) --> 1+3

anyanavicka [17]3 years ago

4 0

Answer:

When you are subtracting a negative number from a positive number, the negative - sign will always turn into a positive + sign.

So in this case, you would cancel out the negative - signs and put in a positive + sign: 1-(-3) --> 1+3

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professor190 [17]

Answer:

Step-by-step explanation:

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3 years ago

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−10x+3y=5 ASAP x=y−4 x ? y?

nexus9112 [7]

Answer:

x = 1 and y = 5

Step-by-step explanation:

Use substitution because you know that x = y - 4, and plug this into the first equation to get -10(y - 4) + 3y = 5, or -10y + 40 + 3y = 5. This is -7y = -35 so y = 5. Plug this into the 2nd equation to get that x = 1 and y = 5.

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3 years ago

A charity gala is held in a hotel ballroom each year. The cost is $150 for the ballroom and an

Serga [27]

Answer: x=100$

Step-by-step explanation:

use the slope formula

y=mx+b

plug in what you have

y=2400, m=22.50x, b=150

solve for x

2400=22.50x+150

subtract 150 from both sides

2250=22.50x

divide 22.50 x from both sides

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2 years ago

1/2(3/4n+ 9) and 2(12 + 8x) -3(4x -9) i need help with these two

Ghella [55]

I dont know if this is right but the answer to 2(12+8x)-3(4x-9) might be 4x+51?

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3 years ago

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The senior class want to play a practical joke on the principal, who was a former college basketball star. They want to fill his

steposvetlana [31]

The number of basketball that will fill up the entire office is approximately 16,615.

Recall:

Volume of a spherical shape = $\frac{4}{3} \pi r^3$

Volume of a rectangular prism = $l \times w \times h$

Given:

Diameter of basketball = 9.5 in.

Radius of the ball = 1/2 of 9.5 = 4.75 in.

Radius of the ball in ft = 0.4 ft (12 inches = 1 ft)

Dimension of the office (rectangular prism) = 20 ft by 18 ft by 12 ft

First, find the volume of the basketball:

Volume of ball = $\frac{4}{3} \pi r^3 = \frac{4}{3} \times \pi \times 4.75^3\\$

Volume of basketball = $448.92 $ in^3$

Convert to $ft^3$

$1728 $ in.^3 = 1 $ ft^3$

Therefore,

Volume of basketball = $\frac{448.92}{1728} = 0.26 $ ft^3$

Find the volume of the office (rectangular prism):

Volume of the office = $20 \times 18 \times 12 = 4,320 $ ft^3$

Number of basket ball that will fill the office = Volume of office / volume of basketball

Thus:

Number of basket ball that will fill the office = $\frac{4,320}{0.26} = 16,615$

Therefore, it will take approximately 16,615 balls to fill up the entire office.

Learn more here:

brainly.com/question/16098833

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2 years ago