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attashe74 [19]
3 years ago
10

I really need help with these problems ?

Mathematics
1 answer:
Trava [24]3 years ago
7 0

Answer:

A: Area of 4 walls - door - window = 2x11x8 +2x12.5x8 - 3x7 -3x2 = 349 (ft2)

B:  Cost: 349 x 0.8 = 279.2 $

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Subtracting a polynomial has the same result as adding its additive inverse.
morpeh [17]
The answer is true...

Why?

Let's take (2x) as a simple polynomial. Subtracting 2x from 2x is one thing, then adding it's inverse, (-2x) yields the equation to 0. This is why it is true...

Hope this helps!! Please give me brainliest!
7 0
4 years ago
Explain the steps you would need to take to find slope from data in a table.
Papessa [141]

Answer:

you will need to find the difference (subtract) between two of the y points then do the same for the x points and put to difference of y on top of x and there is you slope using a graph( or if eaven, will come put as a whole number

3 0
3 years ago
A tennis ball has a radius of 6.7 centimeters. What is the volume of a tennis ball? Use 3.14 for pi. Round your answer to the ne
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The answer would be B) 1259.19 cm3

4 0
3 years ago
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58.(A) (5pts)A certain type of bacteria, given favorable growth medium, quadruples in population every 6 hours. Given that there
Jet001 [13]

Answer:

157286400 bacteria

Step-by-step explanation:

We are given the following in the question:

The bacteria increases 4 times every 6 hours.

Initially there are 150 bacteria.

Thus, we can write the function for number of bacteria after x hours,

f(x) = 150(4)^{\frac{x}{6}}

We have to find the number of bacteria in 2.5 days.

1 day = 24 hours

Thus,

2.5\text{ days} = 24\times 2.5 = 60\text{ hours}

Putting x = 60 in the above equation, we get,

f(60) = 150(4)^{\frac{60}{6}} = 150(4)^{10} = 157286400

Thus, there will be 157286400 bacteria in two and a half days.

5 0
3 years ago
School X and school Y play each other in a competition school x has eight morepoinys than school y. School x has three times as
aleksandr82 [10.1K]

Answer:

School X: 8 points School Y: 2.6̅ or 6 repeating.

Step-by-step explanation:

When you know that School X has <em>8 points</em>, and School Y has <em>3 times less</em>, you have to divide 8 by 3. When you do that, you get 2.6̅, or 2.6 repeating, which means that you have 2 that goes into 3 goes into 8 3 times, because 3 x 3 would be 9, which is bigger than 8. Anyway, when you divide again because you have to add a decimal point after the number to keep dividing, <em>you keep getting 6</em>. it's never going to change, because thats what 6̅ is. 6 REPEATING.

I hope this helps! ;)

6 0
3 years ago
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