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mina [271]
2 years ago
11

I really need help on this one...ASAP!

Mathematics
2 answers:
Agata [3.3K]2 years ago
7 0
4(a+12)=32\\
a+12=8\\
a=-4
Leokris [45]2 years ago
6 0
4(a+12)=32
4a+48=32
4a=-16
a=-4
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Use substitution to solve the system.<br> x = 2y +13<br> - 2x + 3y = -21
il63 [147K]
The answer is
(x,y) = (3,-5)
7 0
3 years ago
Liam bought a comic book and had $5 left. If he had a total of $8 walking into the store, how much did he spend on the comic boo
laiz [17]

Answer: The comic book was $3.

Step-by-step explanation:

Instead of 5x=8, it should have been 5+x=8 because he only purchased a single comic book. Subtract 5 from 8 and your X value is 3.

7 0
3 years ago
Read 2 more answers
Please fast answers.​
serg [7]

Answer:

<4

Step-by-step explanation:

The vertex of the angle is on the lighthouse and one ray/angle is on the boat.

4 0
2 years ago
PLEASE HELP ASAP!!!!
Bond [772]

Answer: 518

Step-by-step explanation:

4 0
2 years ago
A new DVD is available for sale in a store one week after its release. The cumulative revenue,
ratelena [41]

Answer:

f(2) = $180.22

f'(2) = $130.00/week

f'(2)/f(2) = 72.13%

Two weeks after the DVD was released,  the revenue from sales is $180.22 and is increasing at a rate of $130 per week,  or 72.13% per week.

Step-by-step explanation:

The revenue from sales, in dollars, as a function of time, in weeks, is given by:

f(t)=260ln(t)

After two weeks (t=2), the revenue from sales is:

f(2)=260ln(2)\\f(2) = \$180.22

The rate of change, which is given by the derivate of the revenue function, at t = 2 weeks is:

f'(t)=\frac{d}{dt} 260ln(t)\\f'(t) = \frac{260}{t}\\f'(2) = \frac{260}{2}=\$130.00/week

The relative rate of change is:

\frac{f'(2)}{f(2)}=\frac{130}{180.22}=0.7213=72.13\%

Therefore, Two weeks after the DVD was released,  the revenue from sales is $180.22 and is increasing at a rate of $130 per week,  or 72.13% per week.

5 0
3 years ago
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