My teacher doesn't explain she just gives you the paper and I don't get this. I NEED ANSWER ASAP

Answers

Answer 1

Answer: The answer to the first one is 67 because 6.7% of 100 is 6.7% and 6.7% times 10 is 67. This is the correct answer because 100 times 10 is 1000 and 6.7 times ten is 67. Hope you understand!

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Write an algebraic expression with the variable x that has a value of 3 when evaluated
There are 27 red or blue marbles in the bag. The number of red marbles is 5 less than 3 times of the blue marbles. How many red marbles are in the bag? How many blue marbles are in the bag?

Two cars start from the same place driving at the same rate, one heading north and the other heading east. After two hours the car heading north has traveled 150 miles and the car heading east has traveled 100 miles. How far apart are the cars at this time?

Answers

Answer:

180.2776 miles

Step-by-step explanation:

Given that two cars start from the same place.

One car is heading towards north and another east.

that means the two cars travel path make 90 degrees at the origin.

Imagine the triangle with one vertex at the starting place right angled at 90 and other two vertices are the locations of the two cars.

We find this triangle has legs of 150 miles and 100 miles respectively.

The distance between the two cars = length of the hypotenuse of the right triangle with legs 150 and 100 miles

= √(150^2)+100^2 (Using Pythagorean theorem)

= √32500

= 180.2776 miles

Answer:

they are 250 miles apart

|150|+|-100|=250

Which store gives you the best deal?Metromarket
18cans of soda for $9
Wal-Town
10cana of soda for $7.50
ShopStop
14cans of soda for $7.00

Answers

Metromarket sounds most logical to me because it is only $2.00 more than shopstop and you get 4 extra drinks. Out of shopstop and Wal-town you'd be better of at shopstop.

To find which store gives you the best deal we will find the unit rate for each store. Then we will check our work. Then at the end we will compare and see which stores is the cheapest. Lets do it;-

Metro market:-

18 ÷ 9 = 2
1 can = $2

CHECK OUR WORK:-

2 × 9 = 18
We were RIGHT!!

Wal-Town:-

10 ÷ 7.50 = 1.3333....≈ 1.35
1 can ≈ $1.35.

Shop Stop

14 ÷ 7.00 = 2
1 can = $2

CHECK OUR WORK:-

2 × 7 = 14
We were RIGHT!!!

Price per can:-

Metro market = $2
Wal - Town ≈ $1.35
Shop Stop = $2

So the cheapest in this would be Wal-Town ($2).

Hope I helped ya!!

You have 18 stamps from Mexico in your stamp collection. These stamps represent 38 of your collection. The rest of the stamps are from the United States. How many stamps are from the United States?

Answers

It’s 20, 38-18=20 so yea:)

3x+y=15 5x-4y=8

resolucion de sistema por el metodo de sustitucion

Answers

Answer:

x=4

y=3

Step-by-step explanation:

we have the following equations

3x+y=15 equation 1

5x-4y=8 equation 2

using equation 1 we have:

y=15-3x equation 3

using equation 3 in equation 2 we have:

5x-4(15-3x)=8

5x-4*15+4*3x =8

5x-60+12x = 8

17x=68

x=68/17

so we have x=4

finally in equation 3:

y = 15-3(4)

y = 15-12

y = 3

If 45% of x is 200, what is x?

Answers

' 45% ' means ' 0.45 ' .
' of ' means ' times '.

0.45 times 'x' = 200

Divide each side by 0.45 : x = 200/0.45

x = 444 and 4/9 .

45% of x=200
(45/100)x=200
x=(200*100) / 45=444.4444....≈444.44

Answer: x=444.44

To check
45% of 444.44=0.45 * 444.44≈200

You've been given a scholarship of $10,000. If you invent it at a 3.4% annual interest rate, how much interest will you have earned a year's time?

Answers

You can do this by multiplying 10000 by 103.4 percent
10,000 times 100 percent is 10,000 so 10,000 times 103.4 percent is the extra 3.4 percent
You would have earned 340 dollars in a years time

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Abc bookstore sells new books, n, for $12, used books, u, for $8, and magazines, m, for $5 each. The store earned $340 revenue last month. The store sold 5 more used books than new books, and twice as many magazines as new books. Using substitution method, how many magazines, new books, and old books did ABC bookstore sell?