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Vaselesa [24]
3 years ago
15

If 4 students represent 16% of the class then how many students are in the class

Mathematics
1 answer:
kobusy [5.1K]3 years ago
6 0

Answer:

In total there are 25 students in the class.

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What is 1 1/4÷ by 3 4/5
spin [16.1K]

let's firstly convert the mixed fractions to improper fractions and then divide.

\bf \stackrel{mixed}{1\frac{1}{4}}\implies \cfrac{1\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{5}{4}}~\hfill \stackrel{mixed}{3\frac{4}{5}}\implies \cfrac{3\cdot 5+4}{5}\implies \stackrel{improper}{\cfrac{19}{5}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{5}{4}\div\cfrac{19}{5}\implies \cfrac{5}{4}\cdot \cfrac{5}{19}\implies \cfrac{25}{76}

4 0
3 years ago
Read 2 more answers
Quadrilateral ABCD is a rectangle. BD = 6x - 14 and AC = 8x - 20. What is BD?
BigorU [14]

Answer:

4

Step-by-step explanation:

The diagonals are equal length:

6x - 14 = 8x - 20\\-2x = -6\\x = 3

BD = 6x - 14\\BD = 6 * 3 - 14\\BD = 18 - 14\\BD = 4

8 0
3 years ago
Take a look at the picture and answer correctly so i can mark you as brainliest.
AVprozaik [17]

Answer:

{-5, -4, -2, -1, 2, 3}

Step-by-step explanation:

Domain is x value and then you have to put in order :)

5 0
3 years ago
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If a car travels at an average speed of x miles per hour, how far would the car travel in 90 minutes ?
antiseptic1488 [7]

Answer:

(1.5)x

Step-by-step explanation:

90 minutes = 1.5 hours therefore

if car travels x miles in 1 hour

then the care has to travel (1.5)x miles in 90 minutes

6 0
3 years ago
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A rock drops from a height of 60m. how long does it take for it to hit the ground?
laila [671]

To solve for the time an object takes to hit the ground, the equation

<em>y</em> <em>= y₀ + v₀t + ½gt²</em>, or just <em>0 = y₀ +½gt²</em> since there is no initial velocity and the final y position is 0 (since it is on the ground). Therefore, <em>t = (−2y₀/g)^½.</em>

(-2*60/-9.8)^½ = 3.50 seconds.

<em />

8 0
3 years ago
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