MATHEMATICS MIDDLE SCHOOL

kevin’s savings accounts had x dollars in it at the beginning of the month.at the end of the month,there was 4% more money in kevin’s account.which expression represents the number of dollars in kevin’s account at the end of the month?

Answers

Answer 1

Answer:

Answer:

$1.04x$

Step-by-step explanation:

Let

x -----> Kevin’s savings accounts amount at the beginning of the month

Remember that

$100\%+4\%=104\%=104\100=1.04$

we know that

The amount in Kevin’s account at the end of the month is equal at the amount at the beginning of the month multiplied by 1.04

$1.04x$

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You and your friend play a game. You have a final score of 30 points, and your friend has a score of -21. By how many points did you win?

A number of miles driven this month was 30% decrease of the number of miles driven last month ?

Answers

Answer:

70 miles driven this month

Step-by-step explanation:

This is an algebra problem and denote A number of miles driven this month as x to be found

30 % decrease of x number of miles for this month
last month miles driven = 100 %
then 100 % /100% * 100 miles = 100 miles
thus this month = 100 % - 30 % = 70 %

then for this month in miles = 70 %/ 100 % * 100 miles = 70 miles

Answer:

70 miles were driven this month

Step-by-step explanation:

suppose 100 miles were driven last month

30%= 30/100*100=30 miles

30% decreasewould be 100-30= 70 miles

Ben's Bicycle Helmets makes bicycle helmets at a cost of 3000 + 12x dollars per month toproduce x helmets. They sell the helmets for $21 each.
1. Determine the cost to produce 500 helmets.

Answers

Answer:

Cost to produce 500 helmets will be $9000.

Step-by-step explanation:

Expression that represents the cost of the bicycle helmets is given as

C = 3000 + 12x

where x = number of helmets produced.

1. Cost of production of 500 helmets can be calculated by putting x = 500 in the expression.

C = 3000 + 12×500

= 3000 + 6000

= $9000

Therefore, cost to produce 500 helmets will be $9000.

Answer:

$9000

Step-by-step explanation:

3000+12x

x = 500

3000 + (12*500)

3000+6000

$9000

The expression 1/4 X 3/4 represents a fraction of a circle that is shaded

Answers

1/4 * 3/4 = 3 /16 of a circle

Given y=x2 + 9x + 20 find the zeroes.

Answers

Answer:

x=-5 x=-4

Step-by-step explanation:

y=x^2 + 9x + 20

We need to factor the equation

What 2 numbers multiply to 20 and add to 9

4*5 = 20

4+5 =9

y=(x+5) (x+4)

To find the zero's we set the equation equal to zero

0= (x+5) (x+4)

Using the zero product property

x+5 = 0 x+4=0

x=-5 x=-4

stewie brought 2 trains and 3 hats for $18.00. Each trains costs the same amount. Each hat cost the same amount. The price of a hat is $4.00. what is the cost of 1 train