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kenny6666 [7]
3 years ago
15

5/12-3/20 use the least common multiple as the denominator

Mathematics
1 answer:
Paraphin [41]3 years ago
6 0
The common multiple of 12 and 20 is 60.
You've got to multiply the first one by 5 and the second by 3.
5*5= 25
This therefore becomes 25/60
The second becomes 3*3= 9
This becomes 9/60
As you're subtracting, you only subtract the numerators.
25-9= 16
Therefore, the answer is 16/60 which can be simplified to 4/10 or 2/5
Hope this helps :) 
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Determine the slope of the line that passes through the points (-4, 6) and (0,4).
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Answer:

B.) m=-\frac{1}{2}

Step-by-step explanation:

use the slope rule

\frac{rise}{run} \\\\\\frac{y2-y1}{x2-x1}

Fill in values

\frac{4-6}{0-(-4)}

Simplify

\frac{-2}{4}\\-\frac{2}{4}

Simplify further

m=-\frac{1}{2}

Done.

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3 years ago
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For what value of x does 3^4 x = 27^x - 3? a.–9 b.–3 c.3 d.9
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A

Step-by-step explanation:

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A large university accepts 60​% of the students who apply. Of the students the university​ accepts, 40​% actually enroll. If 30,
kykrilka [37]

Answer:

7,200

Step-by-step explanation:

Let's start by calculating how many students the university accepts. The problem says they accept 60% of the students. 60% as a decimal is 0.6. To calculate 60% of something, you multiply .60 by whatever quantity. In this case, it would be the students.

Number of accepted students = .6 * 30000 = 18,000

The university accepts 18,000 students.

Now, the next problem is that of those accepted students, we need to find out how many actually enroll. The problem says they accept 40% of the accepted students. Applying the same principle,

Number of enrolled students = .4 * 18000 = 7,200

The number of students that actually enroll is 7,200.

Alternatively, .6 * 30000 * .4 would give you the same result.

Combining the pieces together, we are asking for 60% of 30,000. Then getting 40% of that 60%.

3 0
2 years ago
What is the area of the shaded part of the square?
scZoUnD [109]

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Step-by-step explanation:

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7 0
2 years ago
Pls help i give u brainliest​
GREYUIT [131]

Answer:

The answer is 324π m².

Step-by-step explanation:

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radius = 18 \div 2

radius = 9m

Then substitute into the formula :

s.a = 4 \times \pi \times  {r}^{2}

let \: r = 9

s.a = 4 \times \pi \times  {9}^{2}

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s.a = 324\pi {m}^{2}

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