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3 years ago

15+(12+8a) simplify and justify each step

2 answers:

5 0

1. distribute a 1 to the 12 and 8a
2. you'll get 15+ 12 +8a
3. add the like terms(15 and 12)
4. your final answer will be 27+8a

olga_2 [115]3 years ago

3 0

Answer:

The answer is $27+8a$

Step-by-step explanation:

In order to determine the answer, we have to know about adding similar terms.

A term is basically a variable and its power. In an operation, we have to find all terms in order to add similar terms. We just add their coefficients.

In this case, we have two terms:

a
number

So, we add similar terms to simplify the expression:

$15+(12+8a)\\(15+12)+(8a)\\27+8a$

Finally the answer is $27+8a$

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Sam owns a chain of fast food restaurants that operated 200 stores in 1999. If the rate of increase is 8% annually, how many sto

yawa3891 [41]

Answer:

370 stores

Step-by-step explanation:

Given data

initial number of stores P= 200

r= 8%

t= 1999-2007= 8 years

Let us apply the compound interest expression to find the final amount of stores

A= P(1+r)^t

A= 200(1+0.08)^8

A= 200(1.08)^8

A= 200*1.85

A=370

Hence the number of stores in 2007 is 370 stores

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

RATHER THAN USE DECIMALS-convert it to cents..

stepan [7]

Answer:

<h2>there are 22 dimes</h2><h2>there are 44 nickles</h2><h2 />

Step-by-step explanation:

D be dimes and N be nickles

2 nickles as dime

nickle = 5 cents and dime =10 cents

N=2D

0.10 D + 0.05 (N)=4.4 substitute N=2D

0.10 D +0.05(2D)=4.4

0.10D+0.10D=4.4

0.20 D=4.4

D=4.4/0.2 = 22

<h2>there are 22 dimes</h2>

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N=44

<h2>there are 44 nickles</h2>

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3 years ago

Please help me on this

umka2103 [35]

Answer:

YZ = 8.5

Step-by-step explanation:

Since RY is an angle bisector then the ratio of the sides of the triangle are equal to the corresponding ratio of the base, that is

$\frac{YX}{YZ}$ = $\frac{XR}{ZR}$ , substitute values

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3 years ago

Write the expanded notation for 15,729?

pshichka [43]

Step-by-step explanation:

15,729 = 10 000 + 5 000 + 700 + 20 + 9

= (1 x 10000) + (5 x 1000) + (7 x 100) + (2 x 10) + (9 x 1)

We can also write it like this :

(1 x 10⁴) + (5 x 10³) + (7 x 10²) + (2 x 10¹) + (9 x 10⁰)

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3 years ago