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4 years ago

*77. The holder of an $8000 savings certificate gets a

Mathematics

1 answer:

Damm [24]3 years ago

7 0

Answer: 8 %

Step-by-step explanation:

SI = prt / 100

640 = 8000 x r x 1

r = 640 / 8000 = 0.08

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87.6 ×.14 rounde to the nearest hundredth is

kakasveta [241]

87.6x.14= 12.264.
12.264 rounded to the nearest hundredth is 12.26

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3 years ago

The average salary for a teacher is $55,000 per year. A physician makes on average $220,000. If you consider the earning potenti

Evgen [1.6K]

Answer:

The difference between the teacher's earnings as compared to the physician's earning over 30 years is $4,950,000

Step-by-step explanation:

Given as :

The average salary for a teacher in a year = $55,000 per year

The average salary for a physician in a year = $220,000 per year

Let The difference between the teacher's earnings as compared to the physician's earning over 30 years = $x

Now,

The average salary for a teacher for 30 years = $55,000 × 30 = $1,650,000

The average salary for a physician for 30 years = $220,000 × 30 = $6,600,000

So,

The difference between the teacher's earnings as compared to the physician's earning over 30 years = The average salary for a physician for 30 years - The average salary for a teacher for 30 years

Or, $x = $6,600,000 - $1,650,000

∴ x = $4,950,000

So, The difference between the teacher's earnings as compared to the physician's earning over 30 years = x = $4,950,000

Hence, The difference between the teacher's earnings as compared to the physician's earning over 30 years is $4,950,000 . Answer

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3 years ago

Calculate the rate of change.<br> 0 1 2 3 4 5<br> 15 25 40 60 85 115

Arte-miy333 [17]

Dy/dx=10,15,20,25,30

d2y/dx2=5,5,5,5,5 (there is no "rate of change" that is constant because acceleration is positive meaning that velocity keeps increasing...)

Since d2y/dx2 is constant, acceleration is constant, and this means that it is a quadratic equation of the form y=ax^2+bx+c

There are only three unknowns so we can use just three data points.

9a+3b+c=60
4a+2b+c=40
a+b+c=25 getting differences between these...

5a+b=20
3a+b=15 and again...

2a=5, so a=2.5, making 3a+b=15 become:

7.5+b=15, so b=7.5, making a+b+c=25 become:

2.5+7.5+c=25, so c=15

So the quadratic which produced the table is:

y=2.5x^2+7.5b+15

This is the regular old position function you see with any object moving with constant acceleration (like gravity when simplified).

The acceleration is 2.5 it has an initial velocity of 7.5 and an initial position of 15.

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3 years ago

Alice wants to buy some paper towels. She has two options. She can either buy a package of four rolls or she can buy one roll no

Evgesh-ka [11]

Buying 4 rolls. If she buys 4 rolls, whenever she used up one roll she already has 3 to replace it. If she buys one roll and then one later, when she uses up the one roll she will have to go buy more

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4 years ago

Chapter 4: Explain how you can

xxTIMURxx [149]

x-intercept(s):

( 7 , 0 ) , (-1,0)

y-intercept(s):

(0,-7)

Step-by-step explanation:

3 0

2 years ago