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koban [17]
3 years ago
12

I need help!! Please explain so I can learn

Mathematics
2 answers:
saveliy_v [14]3 years ago
8 0
What is the question asking?
kompoz [17]3 years ago
8 0
The equation you need is y=mx+b (slope-intercept form). Since the y-intercept, b, is 0 (x=0 when y=0) the remaining part is y=mx. M is your slope/rate of change. It can be expressed as rise over run (y over x) of one ordered pair- so, -3/1 -> -3. Your equation is y= -3x
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Can someone help me? Thanks! :D
Over [174]

Answer:

V = 16 pi h

Step-by-step explanation:

If the diameter is 8, the radius is d/2 =4

The volume is given by

V = pi r^2h

V = pi (4^2)h

V = 16 pi h

6 0
3 years ago
5[3(x+4)-2(1-x)]-x-15=14x+55 what is x
Nostrana [21]

Answer:

x=2

Step-by-step explanation:

I hope you will understand the way I solved it

if not, dont hesitate to ask questions in the comments...

4 0
3 years ago
Darcie wants to crochet a minimum of 3 blankets to donate to a homeless shelter. Darcie crochets at a rate of 1/15 blanket per d
Sauron [17]

Answer:

Since Darcie wants to crochet a minimum of 3 blankets and she crochets at a rate of 1/5 blanket per day, we can determine how many days she will need to crochet a minimum of 3 blankets following the next steps:

- Finding the number of days needed to crochet one (1) blanket:

\begin{gathered}1=\frac{1}{5}Crochet(Day)\\Crochet(Day)=5*1=5\end{gathered}

1=

5

1

Crochet(Day)

Crochet(Day)=5∗1=5

So, she can crochet 1 blanket every 5 days.

- Finding the number of days needed to crochet three (3) blankets:

If she needs 5 days to crochet 1 blanket, to crochet 3 blankets she will need 15 days because:

\begin{gathered}DaysNeeded=\frac{NumberOfBlankets}{Rate}\\\\DaysNeeded=\frac{3}{\frac{1}{5}}=3*5=15\end{gathered}

DaysNeeded=

Rate

NumberOfBlankets

DaysNeeded=

5

1

3

=3∗5=15

- Writing the inequality

If she has 60 days to crochet a minimum of 3 blankets but she can complete it in 15 days, she can skip crocheting 45 days because:

AvailableDays=60-RequiredDaysAvailableDays=60−RequiredDays

AvailableDays=60-15=45DaysAvailableDays=60−15=45Days

So, the inequality will be:

s\leq 45s≤45

The inequality means that she can skip crocheting a maximum of 45 days since she needs 15 days to crochet a minimum of 3 blankets.

Have a nice day!

3 0
3 years ago
3( 2x - 9) + 15 = 60
GarryVolchara [31]

Answer:One solution was found : x = 12. Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the ...

Step-by-step explanation:

8 0
3 years ago
A businessman buys 1,440 dozen pens at $2.50 a dozen and then sells them at a price of 25¢ apiece. what is his total profit on th
Harlamova29_29 [7]
Profit (P) is calculated by subtracting the total cost (C) from the total revenue (R). The calculations are shown below, 

       R = (1440 dozens) x (12 pieces / 1 dozen) x (25 cents/ piece) = $4320
                   C = (1440 dozens) x ($2.50 / dozen) = $3600
 
                          Profit = R - C = $4320 - $3600 = $720

Thus, the businessman's profit is $720. 

7 0
3 years ago
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