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pochemuha
2 years ago
5

Simplify the expression. 3(a – 7) =

Mathematics
2 answers:
Eva8 [605]2 years ago
4 0
The expression simplifies to 3a-21
Elina [12.6K]2 years ago
3 0

Answer:

3a-21

Step-by-step explanation:

3(a-7)= 3a-21

nothing to see here coz the app wants my answer to be at least 20 characters long

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Evaluate the expression for the given value of the variable(s). 5a + 5b; a = -6, b = -5
Vika [28.1K]
Your answer is A. You literally plug in the numbers for a and b to solve for the equation.

4 0
3 years ago
1. You owe $2,348.62 on a credit card with an 8.75% APR. You pay $300.00 toward the card at the beginning of the month and anoth
satela [25.4K]
Part 1:

After payment of $300, remaining balance = $2,348.62 - $300 = $2,048.62.
Interest accrued is given by:

I=Prt \\  \\ =2,048.62\times0.0875\times \frac{1}{12}  \\  \\ =\$14.94

Had it been $600 was paid, remaining balance = $2,348.62 - $600 = $1748.62. Interest accrued is given by:

I=1,748.62\times0.0875\times \frac{1}{12}  \\  \\ =$12.75

Difference in interest accrued = $14.94 - $12.75 = $2.19


Part 2:

The present value of an annuity is given by:

PV= \frac{P\left[1-\left(1+ \frac{r}{12} \right)^{-12n}\right]}{ \frac{r}{12} }

Where PV is the amount to be repaid, P is the equal monthly payment, r is the annual interest rate and n is the number of years.

Thus,

2348.62= \frac{600\left[1-\left(1+ \frac{0.0875}{12}\right)^{-12n}\right]}{\frac{0.0875}{12}}  \\  \\ \Rightarrow 1-(1+0.007292)^{-12n}= \frac{2348.62\times0.0875}{12\times600} =0.028542 \\  \\ \Rightarrow(1.007292)^{-12n}=1-0.028542=0.971458 \\  \\ \Rightarrow \log(1.007292)^{-12n}=\log0.971458 \\  \\ \Rightarrow-12n\log1.007292=\log0.971458 \\  \\ \Rightarrow-12n= \frac{\log0.971458}{\log1.007292} =-3.985559 \\  \\ \Rightarrow n= \frac{-3.985559}{-12} =0.332130

Therefore, the number of months it will take to pay of the debt is 3.99 months which is approximately 4 months.
6 0
3 years ago
Read 2 more answers
Free brainliest if you can convert this fraction into a decimal: <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%CF%80%7D%7Be%7D" i
ioda

Answer:

We all know that 22/7 is a very good approximation to pi. But this well-known fraction is is actually 1/791 larger than a slightly less-well-known but much more mysterious rational approximation for pi: . The fraction 355/113 is incredibly close to pi, within a third of a millionth of the exact value.

Step-by-step explanation:

6 0
2 years ago
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In the function y = 10.00x + 35, y represents the cost of cabin lodging per occupant and x represents the number of occupants. H
UkoKoshka [18]
Y = 10x + 35

if y is cost per occupant and x is occupants, then we can read the equation as such:

Cost is equal to 10 times number of occupants plus a 35$ fee

10 times the number of occupants is the part we are worried about

The cost increases by 10$ for every occupant


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2 years ago
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1 ball of wool is 125m, how many balls are there with 604m??
forsale [732]

Answer:

4.8 balls of wool

Step-by-step explanation:

604÷125=4.8

6 0
2 years ago
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