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padilas [110]
3 years ago
14

. 15 pens at $. 79 each 13 erasers at $.29 each.​

Mathematics
1 answer:
gregori [183]3 years ago
3 0

Answer:

15.62

Step-by-step explanation:

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A car dealer reported a 7.5% drop in sales from 895 cars. How many cars were sold?
Evgesh-ka [11]

Answer:

its is 38.6

Step-by-step explanation:

4 0
3 years ago
James invested $250 in a savings account for 16 years. At the end of 16 years, his savings account had $700 in it.
Nikolay [14]
I=Prt
700=(250)*r*(16)
700=4000*r
700/4000-(4000*r)/4000
0.175=r
17.5%=r

The simple interest rate is 17.5%
5 0
3 years ago
2.) Bob has two weekend jobs. Last weekend he made a total of $77 after
Butoxors [25]

Answer:

Step-by-step explanation:

x= money earned per hour working as a cashier.

y=money earned per hour working delivering newspapers.

We propose the following system of equations:

5x + 4y =77

6x + 3y=78

We solve the system by reduction method:

-6*(5x+4y=77) ⇒  -30x-24y=-462

5*(6x+3y=78)⇒     30x+15y=390

                             ---------------------------

                                     -9y=-72  ⇒   y=-72 /-9=8

Now, we get the value of "x" replacing the value of "y" by "8" in any part of the equation above.

5x + 4(8)=77

5x+32=77

5x=77-32

5x=45

x=45/5=9

therefore;  

money earned per hour working as a cashier= $9/ hour

money earned per hour working delivering newspapers=$8/hour

7 0
3 years ago
Read 2 more answers
Solve the inequality. Explain all steps and identify the properties used.
solniwko [45]
Multiply everything by -3 so it will be n-15>4 then add 15 to both sides so it will be n>19 and thats the answer.
3 0
3 years ago
A kite flying in the air has a 4-m line attached to it. Its line is pulled taut and casts a 3-m shadow. Find the height of the k
NNADVOKAT [17]

Answer:

2.6

Step-by-step explanation:

I used the a^2+b^2=c^2 to get this answer. I squared all the number given and got 16 and 9. Then I subtract them to get 7. Finally square 7 off and got 2.6 as the final answer

Hope this helped

\sqrt{7}  = 2.6

3 0
2 years ago
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