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Arte-miy333 [17]
3 years ago
13

What is the unit rate of 115miles in 2hours

Mathematics
2 answers:
maksim [4K]3 years ago
5 0
You would divide miles to hours amd get 57.5
Dimas [21]3 years ago
5 0
115 miles in 2 hours is what we call a rate: a comparison of two numbers with very different units.  This rate is 115 miles / 2 hours.  It's almost like a fraction!  The numerator is 115 miles, and the denominator is 2 hours.

<span>So, what is a unit rate?  A unit rate is a rate (comparison of two numbers) with a denominator of 1.  So we need our rate, 115 miles / 2 hours, to have a denominator of 1.  We need to make the bottom number of our rate 1 hour.  How do we do that?  Well, we need to divide both the numerator (115 miles) and the denominator (2 hours) by 2!
</span>
115/2=57.5.  2/2=1.  So, this rate is equal to 57.5 miles / 1 hour.  Since the denominator is 1, THAT's a unit rate!!

Answer: 57.5 miles / 1 hour
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What value of y would make {(-2, 18), (3, y), (6, 6), (-18, 2), (4, 9)} an inverse variation?​
love history [14]

Answer:

The value of "y" the would make the ordered pairs an inverse variation is;

y = 12

Step-by-step explanation:

The given ordered pairs are;

{(-2, 18), (3, y), (6, 6), (-18, 2), (4, 9)}

When a pair of variables, "x" and "y", vary inversely to one another, as the value of one variable increases, the value of the other variable decreases

Mathematically, we have;

y ∝ 1/x

The above relation can be represented as an equation as follows;

y = k/x

Where;

k = The constant of proportionality

Therefore, k = y·x

From the given ordered, we have;

k =  -2 × 18 = -36

k = 6 × 6 = 36

k = -18 × 2 = -36

k = 4 × 9 = 36

Therefore, the value of "k" is made constant as follows;

The inverse variation is y = k/(x × (-1)ⁿ)

Where;

n = The number of the term

Therefore, y = 36/(3 × (-1)²) = 12

y = 12

The given ordered pairs can therefore be written as follows;

{(-2, 18), (3, 12), (6, 6), (-18, 2), (4, 9)}.

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2 years ago
Which figure could be the result of dilating this rectangle with a scale factor between 0 and 1?
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A store allows customers to fill their own bags of candy. Troy decides he only wants chocolate-covered pretzels and gumdrops. Ch
kobusy [5.1K]

Answer: He bought 0.5 pounds of chocolate-covered pretzels and 1.3 pounds of gumdrops.

Step-by-step explanation:

Let Troy bought x pounds of chocolate-covered pretzels and y pounds of gumdrops.

Since, the total pounds he bought = 1.8 pounds,

That is, x + y = 1.8  ------------(1)

Also, he total spent total 1.29 dollars in which Chocolate-covered pretzels sell for $0.89 per pound, and gumdrops sell for $0.65 per pound.

That is, 0.89 x + 0.65 y = 1.29  -----------(2),

0.89 x × Equation(1),

We get,

0.89 x + 0.89 y = 1.602  ------------(3)

Equation(2)-equation(3),

We get, 0.24 y = 0.312 ⇒ y = 1.3

By Substituting this value in equation (1),

x = 1.8 -1.3 ⇒ x = 0.5

Thus, he bought chocolate-covered pretzels, x = 0.5 pounds,

And, gumdrops, y = 1.3 pounds.

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Which ratio is equivalent to 4:5?
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Answer:

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