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3 years ago

1 less than four times the sum of a number and 2

Mathematics

1 answer:

Viefleur [7K]3 years ago

3 0

Answer:

4(n+2)-1

Step-by-step explanation:

It says 1 less than 4 times of a sum of a number and 2. This indicated parenthesis (n+2)

so 4 times (n+2)

4(n+2)

It says one less of 4(n+2)

4(n+2)-1

I hope this helps!

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megan hughes deposits 2100 in an account that pays simple interest. when she withdraws her money 11 months later, she receives $

USPshnik [31]

Answer:

The rate at which the account pay the deposit is 2 %

Step-by-step explanation:

Given as :

The principal amount deposited in account = $2100

The rate of interest = r % simple interest annually

The time period = 11 months = $\frac{11}{12}$ year

The amount received = $2138.50

Now, From Simple Interest method

Simple Interest = $\dfrac{\textrm Principal\times \textrm rate\times \textrm time}{100}$

Or, Interest = $\dfrac{2100\times r\times \frac{11}{12}}{100}$

Or, Interest = $\frac{21\times r\times 11}{12}$

Or, Interest = 19.25 r

Now, Interest = Amount - Principal

So, 19.25 r = $2138.50 - $2100

Or, 19.25 r = $38.5

∴ r = $\frac{38.5}{19.25}$

I.e r = 2

So, rate of interest = r = 2 %

Hence The rate at which the account pay the deposit is 2 % Answer

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3 years ago

A scientist invents a car that can travel for many hours without stopping for fuel. The

Lesechka [4]

I believe it should be 1.296 miles

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3 years ago

A and B working together complete a work in 35 days. If A takes 60 days to complete it, how long would B alone tale to complete

svp [43]

Answer:

Efficiency (Work done per day) for :

( ˘ ³˘)/

A & B together = 1/35th

A alone = 1/60th

Thus, efficiency of B alone = Total - A’s efficiency

Step-by-step explanation:

OR Efficiency of B alone = (1/35) - (1/60) = 6/210 - 3.5/210 = 2.5/210 = 1/84th

Hence, since B completes 1/84th work daily, he would take 84 days to complete the work alone.

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3 years ago

Question 2 64 is 40% of what number? А 128 B 256 160 D 26

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C: 160 is the correct answer

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4 years ago

Help! I need the answer as fast as possible.

OlgaM077 [116]

I believe there are 210 blue counters in the bag im not sure but this is how i got this.

a whole will =1

1-.3=.7
there are 90 blue counters in .3 and there are 2.33333(repeat) in .7
so i multipled 2.3333(repeat) by 90. 2.3333(repeat)*90=210
-hope i got it right and that this helps-
p.s. i know it was confusing i have a very different way of thinking, lol.

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3 years ago