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MAVERICK [17]
3 years ago
15

Yooooo please help lol

Mathematics
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer:

You first want to divide 210 by 50 2/3. once you do that you will get 35/251 or 0.13944

Now you should be able to make about $44 dollars

Step-by-step explanation:

tiny-mole [99]3 years ago
5 0

Answer:

my account got banned :(

Step-by-step explanation:

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If a classroom has 7 students with black hair and there are 24 students in the
telo118 [61]

Answer:

  29.2%

Step-by-step explanation:

The fraction of students with black hair is 7/24. To convert that to a percentage, multiply by 100%.

 7/24×100% = 29.1666(repeating)% ≈ 29.2%

3 0
3 years ago
A 30-gram sample of bacteria has some unknown disease that is killing the bacteria. The amount of bacteria is measured each day
Firdavs [7]
For this case we have an equation of the form:
 y = A * (b) ^ t
 Where,
 A: initial amount
 b: decrease factor
 t: time
 Substituting values:
 y = 30 * (b) ^ t
 To calculate t we use a point in the table.
 We have:
 (t, y) = (1, 28.5)
 Substituting:
 28.5 = 30 * (b) ^ 1
 b = 28.5 / 30
 b = 0.95
 Answer:
 
a. Decay factor is 0.95
4 0
3 years ago
Calculate the answer to the appropriate number of significant figures. (do not convert to scientific notation) 6.47 x 64.5
telo118 [61]

Answer:

6.47 \times 64.5 \\  = 417.315

4 0
3 years ago
Read 2 more answers
Let f(x) = x2 - 81. Find f-1(x).
aalyn [17]
The answer is <span>1) ± √x+81
</span>
Step 1: Substitute y for f(x). <span>
Step 2: </span>Since every (x, y) has its partner (y, x)y switch x and y.
Step 3: <span>Solve for y.

Step 1.
The function is:         f(x) = x</span>² - 81
Substitute y for f(x):   y = x² - 81

Step 2.
Switch x and y: x = y² - 81

Step 3.
Solve for y (which is now f⁻¹(x)): f⁻¹(x) = y
x = y² - 81
y² = x + 81
y = +-√(x+81)

Therefore, the choice 1) is correct.
5 0
3 years ago
This got me all confused ^^'
Ulleksa [173]

Answer:

im confused as you are

Step-by-step explanation:

look so what it is saying its that theres 22 in total. 14 already have a sibling and 18 have a pet. 22-14 is 8 and 22-18 is 4. how are you supposed to find the rest of them who have both?

5 0
3 years ago
Read 2 more answers
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