How do i simplify this expression?

Mathematics

1 answer:

levacccp [35]3 years ago

8 0

First, you try to make sure that both the denominators are the same. In order to do this, you multiply both fractions' numerator and denominator by the other fraction's denominator. Next, you combine like terms in the numerator, and then you simplify the fraction.

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Solve.

baherus [9]

The correct answer is: [C]: " 5 " .
__________________________________________________________
→ " a = 5 " .
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Explanation:
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Given: " a + 1 − 2 = 4 " ; Solve for "a" ;

4 + 2 = 6 ;

6 − 1 = 5 ; → a = 5 ;

To check our work:

5 + 1 − 2 = ? 4 ?? ;

5 + 1 = 6 ;

6 − 2 = 4. Yes!

So the answer is: [C]: " 5 ".
_________________________________________________________
→ " a = 5 " .
_________________________________________________________

4 0

3 years ago

Let f(x)=8/(1+3e)^(-0.7x)

Troyanec [42]

For x = -3, (-0.7x) equals (-0.7[-3]), or 2.1.

8 8 8
Then f(-3) = ------------------- = ---------------- = ------------ = 0.31 (approx)
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3 years ago

A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 5 hours, while the outlet pipe can empty it

Rashid [163]

Answer:

$time=40/3hours\approx 13.3hours$

Step-by-step explanation:

The rates are additive: you can calculate the inlet rate and the outlet rate and add them algebraically, i.e. the inlet rate will be positive and the outlet rate will be negative.

1. Inlet rate:

$1vat/5hours$