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3 years ago

What is 3/4- (-5 1/4) = NEED HELP ASAP

Mathematics

1 answer:

Fantom [35]3 years ago

3 0

Answer:

Step-by-step explanation:

$\frac{3}{4} - (-5\frac{1}{4})$

-5 1/4 is a mixed fraction. so we convert it into improper fraction

$-5\frac{1}{4}=-\frac{5*4 +1}{4}=-\frac{21}{4}$

$\frac{3}{4} - (-\frac{21}{4})$

negative and negative becomes positive

$\frac{3}{4} +\frac{21}{4}$

Both fractions have same denominators. so we can combine the numerators

$\frac{3+21}{4}=\frac{24}{4}$

Divide the fraction

$\frac{24}{4}=6$

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3 years ago

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3 years ago

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3 years ago

If h(-8), find 1/3*h(x) = x^2-5x+7

Lynna [10]

The value is 333

<h3>How to determine the function</h3>

From the information given, we have:

x = - 8
1/3*h(x) = x^2-5x+7

Now, let's substitute the value of 'x' in the function:

1/3*h(x) = x^2-5x+7

1/ 3 × h(-8) = ( - 8)² - 5 ( -8) + 7

Make 'h ( -8)' the subject of formula

h ( -8) = $\frac{( -8)^2 - 5(-8) + 7}{1/ 3}$

h ( -8) = $\frac{64 + 40+ 7 }{1/ 3}$

Take the sum of the numerator

h ( -8) = $\frac{111}{1/3}$

Take the inverse of the denominator and multiply

h ( -8) = 111 × 3/ 1

h ( -8) = 333

We can see that through the substitute of the value of x as - 8, we get 333

Thus, the value is 333

Learn more about algebraic expressions here:

brainly.com/question/723406

#SPJ1

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2 years ago