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Alenkasestr [34]
3 years ago
12

Simplify: a + 2a + 3a + 4a

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0

You just need to factor a to get

a(1+2+3+4) = 10a

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Glenn and helen are playing ping pong. For every 3 points that glenn scores, helen scores 4 points. If Glenn scores 6 points, ho
forsale [732]

Answer:

8

Step-by-step explanation:

If Helen scores 4 for each time Glenn scores 3

4 x 2=8

4 0
3 years ago
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Edin has £300 in his saving account his bank offers his a fixed 5% simple interest rate per annum for a period of 3 years how mu
mote1985 [20]

Answer:

45

Step-by-step explanation:

The simple interest formula is

I=p×r×t

I interest earned?

P principle 300

R interest rate 0.05

T time 3years

So

I=300×0.05×3

I=45

interest will he have earned in 3 years is 45

5 0
2 years ago
Totally cellular charges $30 for a monthly plan, with an additional .20 per text message. Gnarly Cells charges $40 for a monthly
Taya2010 [7]

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100 texts

Step-by-step explanation:

Let the amount of text messages be x. Since we are looking at making both plans equal, we add the fixed monthly charges to the number of messages multiplied by the cost.

The total amount charged by Totally will be 30 + 0.2x

The total amount charged by Gnarly will be

40 + 0.1x

Now since we are trying to get the number of text messages that make both charges equal, we equate the two charges and that is:

30 + 0.2x = 40 + 0.1x

40 - 30 = 0.2x - 0.1x

0.1x = 10

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5 0
3 years ago
If f(x) = 4x - 12, what is f(2)?<br> O A. -4<br> O'B. 4<br> O c. -20<br> D. 8<br> Helpppp plzzz
photoshop1234 [79]

Answer:

-4

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f(x) = 4x - 12

Let x=2

f(2) = 4*2 - 12

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8 0
3 years ago
Find the compunt intrest on rs 31250 at 12 % per annum for 12 1/2 years
postnew [5]

Answer:

<h2>$128847</h2>

Step-by-step explanation:

given Principle at 31250

and rate = 12%

and time 12.5 years

the amount would be given by the equation

P(1+\frac{rate}{100})^{time}

plug in values to get

31250(1+\frac{12}{100})^{12.5}

end up with value $128847

3 0
2 years ago
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