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Nataly [62]
3 years ago
8

How do you find if fractions are equivalent to eachother

Mathematics
2 answers:
maw [93]3 years ago
8 0
A simple way to look at how to check for equivalent fractions<span> is to do what is called “cross-multiply”, which means multiple the numerator </span>of<span> one </span>fraction <span>by the denominator </span>of<span> the </span>other fraction<span>. Then do the same thing in reverse. Now compare the two answers to see </span>if<span> they are </span>equal<span>.</span>
aksik [14]3 years ago
8 0
Equivalent fractions<span> are different fractions that name the same number.

to find multiply or divide the numerator and denominator by the same number</span>
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Wich is equivalent to sqrt10^3/4 x
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Answer:

( \sqrt[4]{10} ) ^{3x}

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50 people are selected randomly from a certain population and it is found that 12 people in the sample are over 6 feet tall. wha
Taya2010 [7]

Answer:

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Step-by-step explanation:

To find this, simply start with the number of people over 6 ft and total people as a proportion.

12:50

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3 years ago
A. what's 7 X 8?<br> B. what's 9 X 8?<br> C. what's 8 X 8?
Liula [17]

Answer:

a. 56

b. 72

c. 64

Step-by-step explanation:

5 0
3 years ago
The gas mileage for a certain vehicle can be approximated by m=−0.05x2+3.5x−49, where x is the speed of the vehicle in mph. Dete
Whitepunk [10]

Answer:

<h2>14mph</h2>

Step-by-step explanation:

Given the gas mileage for a certain vehicle modeled by the equation m=−0.05x²+3.5x−49 where x is the speed of the vehicle in mph. In order to determine the speed(s) at which the car gets 9 mpg, we will substitute the value of m = 9 into the modeled equation and calculate x as shown;

m = −0.05x²+3.5x−49

when m= 9

9 = −0.05x²+3.5x−49

−0.05x²+3.5x−49 = 9

0.05x²-3.5x+49 = -9

Multiplying through by 100

5x²+350x−4900 = 900

Dividing through by 5;

x²+70x−980 = 180

x²+70x−980 - 180 = 0

x²+70x−1160 = 0

Using the general formula to get x;

a = 1, b = 70, c = -1160

x = -70±√70²-4(1)(-1160)/2

x = -70±√4900+4640)/2

x = -70±(√4900+4640)/2

x = -70±√9540/2

x =  -70±97.7/2

x = -70+97.7/2

x = 27.7/2

x = 13.85mph

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Hence, the speed(s) at which the car gets 9 mpg to the nearest mph is 14mph

4 0
3 years ago
A person invested $2,500 in an account growing at a rate allowing the money to
sveta [45]

Answer:

Step-by-step explanation:

A person invested $2,500 in an account growing at a rate allowing the money to double every 11 years. How long, to the nearest tenth of a year would it take for the

value of the account to reach $3,800?

The formula for exponential growth given as:

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Hence,

3800 = 2500(1/2)^t/11

Divide both sides by 2500

3800/2500 = 2500(1/2)^t/11/2500

3 0
3 years ago
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