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Lena [83]
4 years ago
8

These are the fees for sending a package by Media Mail: $2.41 for the first pound $0.41 per additional pound for the next six po

unds $0.39 per additional pound after that For example, a two-pound package costs $2.82 to send by Media Mail. If a package full of books costs $7.99 to send by Media Mail, how many pounds does the package weigh? Explain your work in complete sentences. PLZ HELP
Mathematics
1 answer:
den301095 [7]4 years ago
3 0
2.41+6(0.41)+(lb-7)0.39=7.99

2.41+2.46-2.73+0.39lb=7.99

0.39lb=5.85

lb=15

The package of books weights 15 pounds...
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A student graphed f(x)=x and g(x)= f(x)-8 on the same coordinate grid. Which statement best describes how the graph of f and g a
luda_lava [24]

Answer:

The correct option is D

The graph of f is shifted 8 units down to create the graph of g.

Explanation:

Given f(x) = x

If the graph of this function is shifted 8 units down, we have

x - 8

This is the function f(x) - 8

Since g(x) = f(x) - 8, we conclude that the graph of f is shifted 8 units down to create the graph of g.

7 0
1 year ago
What is 50 plus 30 divided by 4
Aloiza [94]

Answer: 57.5

Step-by-step explanation: The first thing you need to know about the order of operations is that multiplication and division come before addition and subtraction.

So in this problem, we are going to divide before we add.

Since 30 divided by 4 is 7.5, our next step will read 50 + 7.5 and 50 + 7.5 simplifies to 14.

6 0
3 years ago
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Element X is a radioactive isotope such that every 90 years, its mass decreases by half. Given that the initial mass of a sample
steposvetlana [31]

Answer:

approximately 27 grams

Work Shown:

Half life formula

y = A*(0.5)^(x/H)

where,

A = starting amount = 30 grams

H = half life period = 90 years

x = number of years that pass by = 12

y = amount left over after x years

Let's plug the values for x, A and H into the formula to find y

y = A*(0.5)^(x/H)

y = 30*(0.5)^(12/90)

y = 27.3516746567466

y = 27 .... rounding to the nearest whole number

4 0
3 years ago
3/4 divided by 15 =<br> need help plz
vova2212 [387]

Answer:

Step-by-step explanation:

3/4 divied by 15 = 1/20

4 0
3 years ago
Nvmmm jdkslkdijewkl,jdkr3tfrrrrrrrrredsw
kaheart [24]

hmmm, between the three options I would go with the second one since the number of 1-foot cubes equals exactly the volume of the fish tank.

But to truly calculate the volume

5 x 3 = 15

15 x 3 = 45

45 is the volume of the fish tank

3 0
2 years ago
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