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Ymorist [56]
3 years ago
10

the first row the theater has 15 seats in it each subsequent row has 3 more seats that seats that the previous ow . if the last

row has 78 sears, how many rows are in the theater a 21 b 78 c 77 d 45 e 22
Mathematics
1 answer:
ivann1987 [24]3 years ago
7 0

Answer:

21 rows

Step-by-step explanation:

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6 divided by 11 write the quotient as a fraction or mixed number
kolbaska11 [484]
6 divided by 11 equals 0.5454545454545455
3 0
3 years ago
If you invest $100 into an account that earns 9% interest each year, how many years will it take for you to have $200?
Helga [31]
It does not say simple or compound interest.
Simple interest is rarely used these days, so assume compound.
Use the standard formula:
future value = present value*(1+rate/n)^(nt)
n=number of times interest is compounded per year (=1)
t=number of years
Plugging values,
200=100(1.09)^t
1.09^t = 2
take log
t(log(1.09))=log 2
t=log(2)/log(1.09)=0.6931/0.08618=8.04 years.
8 0
3 years ago
What is the value of x?
GenaCL600 [577]

Answer:

<h2>x = 3</h2>

Step-by-step explanation:

Look at the picture.

We have the triangles 45° - 45° - 90° and 30° - 60° - 90°.

The sides of those triangles are in ratio:

1 : 1 : √2 and 1 : √3 : 2

Therefore

If AC = 6√2 then AB = BC = 6

If BC = 6 then x = 6 : 2 = 3

7 0
3 years ago
1/2(2+a)=3a+4/3 solve it
Mumz [18]
1/2(2+a)=3a+4/3

first, you use the distributive property<span>

</span>then your problem changes to...

1 + 1/2a = 3a + 4/3

then you subtract 1/2a with 3a

1  = 2 1/2a +4/3
<span>
now you subtract 1 with 4/3
</span>
-1/3 = 2 1/2a

now you divide -1/3 with 2 1/2a 

-2/15 = a

A = -2/15 is your answer. Hope this helps :)


4 0
3 years ago
Determine which of the following sequences is arithmetic. If the sequence is arithmetic, determine the first term a, an
Ilya [14]

Answer:

the sequence is arithmetic with first term 2 and common different is 2

Step-by-step explanation:

please give me brainlest

7 0
3 years ago
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