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aleksklad [387]
4 years ago
7

How many gallons of paint are needed to paint the walls of a rectangular​ prism-shaped room that is 20 ft by 14 ft and 8 ft high

if 1 gallon of paint covers 40 sq​ ft?
Mathematics
1 answer:
Crazy boy [7]4 years ago
7 0
56 gallons of paint are needed.
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The mass of a bacterial culture doubles every 4 days. If the initial sample is 5 mg: a) How much will you have after one week (7
jeyben [28]

Answer:

For me i got this.  A) = 16.846mg B) 24 days I am also in summer school for toronto schoolboard.  I used the formula like how it said so should be good.

Step-by-step explanation:

A)

P(t) = Po(2)x^\frac{t}{d} \\=5(2)^\frac{7}{4} \\=16.817mg

B)

320=5(2)^\frac{t}{4}\\ 64=2^\frac{t}{4}\\2^6=2^\frac{t}{4}\\6=\frac{t}{4}\\(4)6=t \\t=24 days

8 0
3 years ago
What are some good things to remember when you<br> draw a diagram of a ratio?
viktelen [127]

Answer:

<u>the order in which the ratio is drawn should be the same as listed.</u>

Explanation:

What this means is that since a ratio compares the sizes of two numbers (eg 4:2 or 4 ratios 2 or \frac{4}{2}), it would be wrong to change the order of a ratio when drawn in a diagram.

For example,  changing the order to (2:4 or 2 ratios 4), which then  because \frac{2}{4} not \frac{4}{2}. Hence, it is important to remember that diagram of the ratio of two or more quantities should be the same as listed.

5 0
4 years ago
What is 7000 plus zero minus two expandeed form to the second power addition, boom
dimulka [17.4K]

Answer:

uhhhhhh i.dk lol

Step-by-step explanation:

3 0
3 years ago
WhaThe factorization of x2 + 3x – 4 is modeled with algebra tiles.t is the factored form of x2 – x – 2?
Nataly [62]

Answer:

  x^2 -x -2 = (x -2)(x +1)

Step-by-step explanation:

To factor x^2 -x -2, you look for factors of -2 that have a sum of -1:

  -2 = (-1)(2) = (1)(-2) . . . . . the latter pair has a sum of -1

Then these are the constants in the binomial factors:

  x^2 -x -2 = (x +1)(x -2)

_____

<em>Comment on the question</em>

The fact that x^2 +3x -4 is modeled with algebra tiles seems to be irrelevant to the question that is actually asked.

4 0
3 years ago
AB, CD, and EF are straight lines intersecting at point O. Find x.
frutty [35]

Answer:

30

Firstly, identify all the pairs of vertically opposite angles. Vertically opposite angles are equal.

In this case,

AOC & DOB are vertically opposite angles so both of them are 2x°

EOD & COF are vertically opposite angles so they are both 3x°.

FOB & EOA are vertically opposite angles so they are both x°.

Adding the values of all 6 angles, we get:

3x + 3x + 2x + 2x + x + x = 12x

We also know that

12x = 360°

x = 30°

8 0
3 years ago
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