You can write three equations in the numbers of nickels (n), dime (d), and quarters (q).
n + d + q = 23 . . . . . . . there are 23 coins total
0n +d -q = 2 . . . . . . . . .there are 2 more dimes than quarters
5n +10d +25q = 250 . .the total value is $2.50
The collection includes 11 nickels, 7 dimes, and 5 quarters.
_____
I used the matrix function of my calculator to solve these equations. You can find q by subtracting from the last equation five times the sum of the first two equations.
(5n +10d +25q) -5((n +d +q) +(d -q)) = (250) -5(23 +2)
25q = 125 . . . . . . . simplify
q = 5
From the second equation,
d = q +2 = 7
And from the first,
n = 23 -5 -7 = 11
Answer:
Loss = $80000
Step-by-step explanation:
To determine if it's a profit or loss is simple.
He predicted the sugar cane stock to fall so he sold , but few days later the stock grew and went bullish.
He sold at$ 40 for 2000 shares
=$ 80000
But the stock went up to $80 per share that is gaining extra $40
So it was actually a loss.
The loss is =$40 * 2000
The loss = $80000
Jane has 5 pants and 7 shirts.
In order to find how many different combinations of pants and shirts we must multiply.
7 x 5 = 35
The answer is 35 combinations.
This method works when finding out the combinations of anything. Just multiply all the items together.
Answer:
Step
Statement
1
2
3x + 7 = 15
x + 7 - 7 = 15
ža
3
= 15
4.
3
= 3.15
5
r = 45
Which statement is true?
A. Jake made a mistake in step 2.
B.
Jake made a mistake in step 4.
C.
Jake made a mistake in step 5.
OD Jake solved the equation correctly.
Answer:
If the air trolley ended at 60 km and it traveled 20 km- what was its starting position?
Step-by-step explanation:
Step
Statement
1
2
3x + 7 = 15
x + 7 - 7 = 15
ža
3
= 15
4.
3
= 3.15
5
r = 45
Which statement is true?
A. Jake made a mistake in step 2.
B.
Jake made a mistake in step 4.
C.
Jake made a mistake in step 5.
OD Jake solved the equation correctly.
Answer:
If the air trolley ended at 60 km and it traveled 20 km- what was its starting position?
Step-by-step explanation:
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>As per the diagram we got:</u>
<u>As FH = 7x + 4 and EH = 9x - 2, we solve the following equation for x:</u>
- 7x + 4 = 9x - 2
- 9x - 7x = 4 + 2
- 2x = 6
- x = 3
<u>So each segment is:</u>
<u>Therefore</u>:
<u>So the variables are:</u>
