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umka2103 [35]
3 years ago
11

Can someone help me plz

Mathematics
1 answer:
Reika [66]3 years ago
3 0
If we represents a book's cost as x, that would mean that 5*x would represent the cost of 5 books (as x+x+x+x+x=5x) and 4x would be 4, resulting in 5x+4x=9x. After that, we get that 19 books is 19x as the cost, but since Agnus gets a 10 dollar discount, it's 19x-10. After that, to combine the two, we notice that Agnus still spends 5$ more than what they spent combined (9x) so we get that 9x+5=19x-10. Subtracting 9x from both sides, we get 10x-10=5. Adding 10 to both sides there, we get 10x=15 and we can divide 10 by both sides to get x=1.5
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The local parts shop buys a machine that costs $500,000. Its value depreciates exponentially each year by 10%. What is the machi
pychu [463]
If you would like to know what is the machine's value after 5 years, you can calculate this using the following steps:

1 year: $500,000 - 10% * $500,000 = 500,000 - 10/100 * 500,000 = $500,000 - $50,000 = $450,000

2 years: $450,000 - 10% * $450,000 = 450,000 - 10/100 * 450,000 = $450,000 - $45,000 = $405,000

3 years: $405,000 - 10% * $405,000 = 405,000 - 10/100 * 405,000 = $405,000 - $40,500 = $364,500

4 years: $364,500 - 10% * $364,500 = 364,500 - 10/100 * 364,500 = $364,500 - $36,450 = $328,050

5 years: $328,050 - 10% * $328,050 = 328,050 - 10/100 * 328,050 = $328,050 - $32,805 = $295,245

The correct result would be $295,000.
7 0
4 years ago
Read 2 more answers
Solve for u: 2(u + 6) - 8 > 3(u - 5)
Wittaler [7]
I’m pretty sure the answer is u<19
7 0
3 years ago
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Find the equation of the line that passes through the following lines points (0,-1) and (3,12).​
Temka [501]

Answer:

y=13/3x-1

Step-by-step explanation:

k=(y2-y1) /(x2-x1)

A(0,-1) x1=0,y1=-1

B(3,12) x2=3, y2=12

k=(12-(-1))/(3-0)

k=(12+1)/3

k=13/3

y-y1=k(x-x1)

y-(-1)=13/3(x-0)

y+1=13/3*x

y=13/3*x-1

8 0
3 years ago
What is the value of x in the figure at the right?
Ksju [112]

Answer:

B

2x + 42 \degree= 90 \degree \\ 2x = 48\degree \\ x =  \frac{48}{2}  \\ x = 24

8 0
3 years ago
Read 2 more answers
Help this question for me?!
iogann1982 [59]

Answer:

2.8 pounds

Step-by-step explanation:

6 0
3 years ago
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