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Whitepunk [10]
3 years ago
14

A used bookstore sells hardback books and paperback books.A hardback book costs $11, including tax.A paperback book costs $5, in

cluding tax.Jamal bought 3 more paperback books than hardback books.Jamal spent $47. How many paperback books did Jamal buy? A.2 B.3 C.4 D.5
Mathematics
1 answer:
Ket [755]3 years ago
6 0

Answer:

D.5

Step-by-step explanation:

You can write the following equations from the information given:

y=x+3 (1)

11x+5y=47 (2)

x is the number of hardback books

y is the number of paperback books

You can replace (1) in (2):

11x+5(x+3)=47

11x+5x+15=47

16x=47-15

16x=32

x=32/16

x=2

Then, you can replace the value of x in (1) to find the value of y:

y=2+3

y=5

According to this, the answer is that Jamal bought 5 paperback books.

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Zinaida [17]

Answer:

3.92 × 10 ^18

Step-by-step explanation:

(7 x 10^*9)(5.6 x 10^*8)

(7000000000)(560000000)

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3 0
3 years ago
I just need like a step by step I haven't understood what my teacher has taught me here ​
motikmotik
You are trying to find the side between the right angle and the degree (This is known as the adjacent)
You are given degree 42
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x = 19 * 0.7431448255
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7 0
2 years ago
please help me please if some one answers my question next i will post 100 points free if some one answers this question please
kari74 [83]

Answer:

Step-by-step explanation:

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use the point-slope formula  y-y1 = m(x-x1) and plug in either given point for (x1,y1)

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4 0
2 years ago
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Natasha_Volkova [10]

Answer:

(5, 0) and (4, 0)

Step-by-step explanation:

According to the graph shown, the parabola passes trough the points (4,0) and (5,0). Therefore, they are the x-intercepts of the parabola.

3 0
3 years ago
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What is 10^0+10^1+10^2=​
Komok [63]

\text{Hey there!}

\bf{10^0+10^1+10^2}\\\\\bf{10^0=1}\\\\\bf{10^1=10}\\\\\bf{10^2=10\times10\rightarrow100}\\\\\bf{1+10+100}\\\\\bf{1 + 10 = 11}\\\\\bf{11 + 100=111}\\\\\boxed{\boxed{\bf{Answer: 111}}}\checkmark

\text{Good luck on your assignment and enjoy your day!}

~\frak{LoveYourselfFirst:)}

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