MATHEMATICS HIGH SCHOOL

1. The price of one share of a stock fell 4 dollars each day for 8 days. Howmuch value did one share of the stock lose after 8 days?
2. A credit card company charges a late fee of 25 dollars each time a customer
fails to pay on time. A customer missed the payment 4 times last year. At
the customer's request and out of courtesy, the credit card company
decides to cancel all late fees for that year. Write a numerical expression to
show how much money was return.

Answers

Answer 1

Answer:

Step-by-step explanation:

$4 for 8 days. that means $4 on each and every day, 8 times.

so, in total that is 4 × 8 = $32

that is how multiplications work.

m×n means that m is added n times (or vice versa and n is added m times).

similar here.

$25 each time the customer missed a payment. and he missed 4 times that year.

the bank returned the fees for all 4 occasions. so,

returned money = 25 × 4 = $100

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Use cross multiplication to solve the following proportion. 1. /6 = 15/18

Answers

Answer:

x=5

Step-by-step explanation:

x/6=15/18

18x=6 times 15

18x=90/18

x=5

If 6m + 4 = 8m, then 4m

Answers

6m + 4 = 8m

Subtract 6m from each side:

4 = 2m

Multiply each side by 2 :

8 = 4m

$6m + 4 = 8m$
$4 = 2m$
$2 = m$

$4m$
$4(2)$
$8$

$4m = 8$

Write the expression in simplest form. Assume that all variables are positive.

Answers

2x+5+3x-2
Answer is: 5x+3

Find the volume of the square based pyramid.

Answers

A = 1/3 * s^2 * h where s is a side of the base and h is the height.

Finding the height of the pyramid:

$\left((6)/(2) \right )^(\!\!2)+h^(2)=8^(2)\n \n \n 3^(2)+h^(2)=8^(2)\n \n h^(2)=8^(2)-3^(2)\n \n h^(2)=64-9\n \n h^(2)=55\n \n h=√(55)\mathrm{~m}$

Finding the base area:

$S=6^(2)\n \n S=36\mathrm{~m^(2)}$

Formula for the volume of the pyramid:

$V=(S\cdot h)/(3)\n \n \n V=(36\cdot √(55))/(3)\n \n \n V=(\diagup\!\!\!\! 3\cdot 12\cdot √(55))/(\diagup\!\!\!\! 3)\n \n \n \boxed{\begin{array}{c} V=12√(55)\mathrm{~m^(3)} \end{array}}$

Complete the following statement.
100% of $12 = $____

Help pls