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Alex777 [14]
3 years ago
9

Write a story for 3/9=21/k

Mathematics
1 answer:
nata0808 [166]3 years ago
4 0

Answer:

David contributes 3 dollar for every 9 dollars that Ken contributes, how dollars will Ken contribute when David contributed 21 dollars.

Step-by-step explanation:

David and Ken are contributing money to buy a textbook.

They agreed, that every 3 dollars that David contributes, Ken should contribute 9 dollars.

Find how much Ken contributed if David when David contribute 21 dollars.

If we set up a proportion equation to solve this problem, we get;

\frac{3}{9}  =  \frac{21}{k}

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John has 15 1/4 gallons of gas in his truck. John can drive his truck 7 1/2 miles on each gallon of gas. About how many miles ca
photoshop1234 [79]

Answer:

114 3/8 gallons

Step-by-step explanation:

To solve the question, we multiply by the number of gallons and the amount travelled per gallon:

Let's convert all fractions to improper fractions:

15 1/4 = (15*4 + 1)/4 = 61/4

7 1/2 = (7*2 + 1)/2 = 15/2

Multiply the numerators and the denominators:

61/4 * 15/2 = 61*15/4* 2 = 915/8 = 114 3/8

-Chetan K

3 0
3 years ago
1 ) Old Navy is offering a 20 % discount on all sweaters. If the regular price of a sweater is $45,what is the sale price?​
deff fn [24]

Answer:

Sale Price = $36

Step-by-step explanation:

To find the sale price, you need to find what 10% of the original price is. 10% of $45 is $4.50. Now we need to find what 20% is, 20% is double 10% so we multiply the answer we got by 2. This equals to $9. The question is asking for the sale price, to find it you have to subtract $9 (the discount) from $45 (regular price). The answer you should get is $36.

Equation:
$45 ÷ 10 = $4.50
$4.50 × 2 = $9
$45 - $9 = $36

7 0
3 years ago
Graph y = -2x + 5 and y = -1/2x - 3
Umnica [9.8K]
Take a look at the document I had attached to my answer for what the graph looks like:

8 0
3 years ago
Simplify 15.6 divided by negative 3..
MaRussiya [10]
The Great common factor is 3.

So divide both numerator and denominator by 3 and you have -5.2.
8 0
4 years ago
Read 2 more answers
How to solve for probability
kirill [66]
Solution: The sum of probabilities of all the sample points must equal 1. And the probability of getting a head is equal to the probability of getting a tail. Therefore, the probability of each sample point (heads or tails) must be equal to 1/2. Let's repeat the experiment of Example 1, with a die instead of a coin.
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3 years ago
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