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MAVERICK [17]
2 years ago
10

Tyler needs at least $205 for a new video game system. he has already saved $30. he earns 7$ an hour at his job. write and solve

an inequality to find how many hours he will need to work to buy the system. interpret the solution. 
inequality:



interpretation:





solution:
Mathematics
2 answers:
saul85 [17]2 years ago
7 0

Answer:

he has to work for total 25 hours to buy the system

posledela2 years ago
4 0

Answer: 25 hours is the answer

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4. Tikili wants to invest $3500 at her local bank. She will receive an interest rate of 5% compounded
alexandr402 [8]

Answer:

3863.35 = 3500(1 +  \frac{0.05}{2} )^{(2 \times 2)}

Step-by-step explanation:

The formula for this equation is

a = p(1 +  \frac{r}{n} )^{(n \times t)}

a is the final result

p is the starting amount (deposited)

r is the interest rate

n is the number of times it's compounded

t is the time

because it says compound annually and it's after 2 years both t and n equal 2. I rounded a for you, but if you don't need it rounded here it is: 3863.345117

Please double check me I may be wrong, this is my second time doing these type of questions

3 0
3 years ago
8m-6(-8m+4)= ??????????????????
dangina [55]
The answer is 8m im serious
5 0
3 years ago
The population of bacteria in a culture grows at a rate proportional to the number of bacteria present at time t. After 3 hours
ella [17]

Answer:

137

Step-by-step explanation:

Use the model A = Pe^(kt), where P is the initial number and k is the growth constant.  Then, in case 1,

300 = Pe^(k*3)

and in case 2,

4000 = Pe^(k*10).  We need to find P and e^k.

300 = Pe^(k*3) can be rewritten as (300/P) = [e^k]^3, which in turn may be solved for e^k:

∛(300/P) = e^k

Now we go back to 4000 = Pe^(k*10) and rewrite it as (4000/P) = [e^k]^10.  Substituting ∛(300/P) for e^k, we obtain:              

(4000/P) =  (300/P )^(10/3)

which must now be solved for P.  Raising both sides by the power of 3, we get:

(4000/P)^3 = (300/P)^10.  Therefore,

4000^3       300^10

------------- = -------------

   P^3             P^10

which reduces to:

4000^3       300^10

------------- = -------------

       1             P^7

or

        1         P^7

------------  =  -----------

4000^3       300^10

or:

           300^10

P^7 = ---------------- = 9.226*10^13  = 92.26*10^12

           4000^3

Taking the 7th root of both sides results in P = (92.26*10^12)^(1/7), or

                                                                        P = 137.26

The initial number of bacteria was 137.

7 0
2 years ago
What is 1 and 5/8 rounded to the nearest half
Anna35 [415]
<span>1 and 5/8 rounded to the nearest half = 1 1/2

hope it helps</span>
3 0
3 years ago
3/4 of the pupils in Year 9 say their favourite colour is red. There are 144 pupils in Year 9. How many students said red is the
eimsori [14]

Answer:

108 students

Step-by-step explanation:

Take the fraction and multiply by the number of students

3/4 *144 =108

108 students

6 0
3 years ago
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