Which of the following is an example of chemical energy? A windmill spinning. Electrons moving in an electrical circuit. Energy in an apple that a worm eats. Heat given off by a light bulb.
energy in an apple that worms eat
7. A company uses the function P(x) = 150x:-42
to determine how much profit the company
will make when it sells 150 units of a certain
product that sells for x dollars per unit. How
much more profit per unit will the company
make if it charges $25 for the product than if it
charges $20 ?
Answer:
yo this is math
Explanation:
A collection of quarters, dimes, and nickels is worth $5.00. If the ratio of quarters to dimes is 2:4:7, how many quarters are there ?
Answer:
8 quarters
Explanation:
Let's look at the ratio first off.
2 quarters: 4 dimes: 7 nickels
Let's write it in terms of money
50 cents of quarters: 40 cents of dimes: 35 cents of nickels
If we add up all the cents then we get $1.25
Then, if we divide $5 by $1.25 we get 4.
You should then multiply the original ratio by 4:
8 quarters: 16 dimes: 28 nickels
Let's check this by turning it to money:
$2: $1.60: $1.4
This all adds up to $5
Therefore your answer is 8 quarters.
Hope this helps!
- Kay
There are $0.769 worth of quarters in the collection.
How do we solve word problems with ratios?Word problems with ratios are being solved by adding the ratios together, then relating that portion we are expected to determine to the sum total of the added ratio.
Mathematically, from the given information, we have:
The total worth of the collection = $5.00In the same order of quarters, dime, and nickels, the ratios are 2:4:7The sum total of these ratios are;
= 2 + 4 + 7
= 13
Now, the number of quarters in the whole collection can be computed as:
[tex]\mathbf{= \dfrac{2}{13}\times \$5}[/tex]
[tex]\mathbf{= \dfrac{2}{13}\times \$5 } \\ \\ \\ = \mathbf{\$0.769}[/tex]
Learn more about word problems here:
https://brainly.com/question/13818690