Steven has a collection of nickels and dimes. In all, he has 17 coins. The total value of the collection
is $1.15. How many nickels and how many dimes does he have?

11 nickels and 6 dimes

Step-by-step explanation:

Let n be the number of nickels and d be the number of dimes.

n + d = 17 (1)

Since 1 nickel is 5 cents, n nickels will be 5n cents

Since 1 dime is 10 cents, d dimes would be 10d cents.

$1.15 = 115 cents

5n + 10d = 115

Dividing by 5,

n + 2d = 23 (2)

Equation (2) - Equation (1)

d = 23 - 17 = 6

n + d = 17

n + 6 = 17

n = 17-6

n = 11

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.