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andrey2020 [161]

2 years ago

12

Kennedy served 15 3 / 4 hours of volunteer service last month. She served 21 5 / 6 hours of volunteer service this month. How ma

ny more hours did she serve this month?

1 answer:

Rasek [7]2 years ago

5 0

73/12 or 6 1/12 hours more than before

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The value of a dvd player decreases by 60% each year. If you purchased this dvd player today for $180, how much would the player

Volgvan

The formula is
A=p (1-r)^t
A future value?
P present value 180
R rate of decreases 0.6
T time 2 years
A=180×(1−0.6)^(2)
A=180×(0.4)^(2)
A=28.8

3 0

2 years ago

What is 92.9 rounded to the nersst whole number

sammy [17]

The nearest whole number would be 93 because you round up if the decimal place is greater than 5 and down if it's less.

5 0

2 years ago

Solve for m: <br> 8(m + 2) = 3(12 - 4m)

Tema [17]

Answer:

m=1

Step-by-step explanation:

step 1: 8(m + 2) = 3(12 - 4m) remove the parentheses

step 2: 8 m + 2 = 3 12 - 4m move the terms

step 3: 8m+ 12m= 36 - 16 collect like terms and calulate

step 4: 20m=20 divide both sides

solution: m=1

3 0

2 years ago

Read 2 more answers

A rectangular tank that is 5324 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes

marishachu [46]

Answer:

Side of 22 and height of 11

Step-by-step explanation:

Let s be the side of the square base and h be the height of the tank. Since the tank volume is restricted to 5324 ft cubed we have the following equation:

$V = s^2h = 5324$

$h = 5324 / s^2$

As the thickness is already defined, we can minimize the weight by minimizing the surface area of the tank

Base area with open top $s^2$

Side area 4sh

Total surface area $A = s^2 + 4sh$

We can substitute $h = 5324 / s^2$

$A = s^2 + 4s\frac{5324}{s^2}$

$A = s^2 + 21296/s$

To find the minimum of this function, we can take the first derivative, and set it to 0

$A' = 2s - 21296/s^2 = 0$

$2s = 21296/s^2$

$s^3 = 10648$

$s = \sqrt[3]{10648} = 22$

$h = 5324 / s^2 = 5324 / 22^2 = 11$

4 0

2 years ago

Use the graphing tool to graph the function f(x)=10^x. Then identify the features of the graph.

mafiozo [28]

Answer:

Step-by-step explanation:

3 0

2 years ago