One of the last questions for today and for 20 points!

Answers

Answer 1

Answer: This formula says that the bank will TAKE three percent of the money
in your account whenever the account is inactive for a year. Nice bank !
Personally, I'd get ALL of my money out of that bank ASAP, and run,
don't walk, to a different bank.

Anyway, the equation is y = 7500(0.97)^x .
They want to know the y-intercept.
Just like the graph of ANY equation, the y-intercept is the place
where the graph is on the y-axis ... the place where x=0 .
What's the value of 'y' in this equation when x=0 ?
What's the value of (0.97)⁰ ?
Do you remember that ANY number raised to the zero power is ' 1 ' ?
(0.97)⁰ = 1
So, when x=0, y = 7500.

What does that mean ?
Well, the question tells you that 'y' is the value of an account "that was
left inactive for a period of 'x' years".
So x=0 at the beginning, when the money is first deposited, and
the account hasn't been inactive for ANY period yet.

When x=0, y=7500. The y-intercept is the amount of money that
the person originally deposited in the account. If he leaves the
account inactive, then the bank will multiply it by 0.97 each year ...
the same as reaching in and grabbing 3% of the money in the account !

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The length of a rectangle is 2/5 meter. Its width is 1/4 of its length. What is the perimeter of the rectangle?

Answers

P= 2(2/5 + 1/4)
2/5 + 1/4 = 8+5/20 = 13/20
P= 2 x 13/20 = 13/10

2(2/5) + 2(2/5 x 1/4)
0.8 + 0.2
= 1

It has a perimeter of 1 metre.

Emily pays 15 % on her total income. if she earns 11500 dollars a year how mich money does she have left

Answers

Answer: 9775 dollars

====================================

Explanation:

There are two ways to find the answer

Method 1: Take 15% of 11500 to get 0.15*11500 = 1725. This is the amount Emily pays, so she has 11500-1725 = 9775 dollars left over

Method 2: She pays 15% of her income, so she has 85% left over. This is because 100% - 15% = 85%. Now apply 85% to her income to get 0.85*11500 = 9775

Answer:

$97750

Step-by-step explanation:

-15 + 12x = 5x + 7 -3x
SOLVE FOR X

Answers

Answer:

$x = 2.2$

Step-by-step explanation:

$- 15 + 12x = 5x + 7 - 3x \n + 12x - 5x + 3x = 15 + 7 \n 10x = 22 \n (10x)/(10) = (22)/(10) \n x = 2.2$

Answer: $x=(11)/(5)$

Simplify both sides of the equation

$-15+12x=5x+7+-3x$

$12x-15=(5x+-3x)+(7)$ (Combine Like Terms)

$12x-15=2x+7$

Subtract 2x from both sides

$12x-15-2x=2x+7-2x\n10x-15=7$

Divide both sides by 10

$(10x)/(10) =(22)/(10)$

$x=(11)/(5)$

Hank has cards that are 8 inches by 4 inches. a stack of these cards fits inside a Box that is 8 inches long 4 inches deep 4 inches high. the cards use up to 32 cubic inches of volume how tall is the stack of cards? What percent of the Box's volume is taken up by the cards?

Answers

32 cubic inches of cards
V=area of bsase times height
area of base=4*8=32
32=32*height
1=height
card stack is 1 inch high

find volume of box
v=8*4*4=128

32 cubic inches of cards
percent means parts out of 100
x%=x/100
32/128=0.25/1
0.25/1 times 100/100=25/100=25%

answer is 25%

1 inch tall
25% taken up

Answer:

the answer is 32 cubic units

Step-by-step explanation:

How can I get straight A's