Simplify (–x2 +5) – (3 – 4x2)

Answers

Answer 1

Answer: $(-x^(2) +5)-(3-4 x^(2) )$
To simplify this, use the FOIL method. First, Outer, Inner, Last.
First: Multiply the first numbers in each set of parentheses.
$-x^(2) *-3=3 x^(2)$
Outer: Multiply the two outermost numbers in the equation.
$-x^(2) *-4 x^(2) =5 x^(4)$
Inner: Multiply the two innermost numbers in the equation.
$5*-3=-15$
Last: Multiply the last numbers in each set of parentheses.
$5*-4 x^(2) =-20 x^(2)$
Then, we put them all together in an equation, from the highest exponent to the lowest, then highest prefix (number before the variable) to lowest.
$5 x^(4) -20 x^(2) +3 x^(2) -15$
And simplify.
$5 x^(4) -17 x^(2) -15$

Answer 2

Answer: when you subtract you have to change the signs so it would be -3+4x2
then you combine like terms to get 3x2+2 i am assuming the 2"s mean squared

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Marco is 6 feet 3 inches tall. There are 2.54 centimeters in 1 inch. What is Marco's height in centimeters?

Answers

Answer:

Step-by-step explanation:

First, let's convert 6 feet 3 inches to just inches. Because there are 12 inches in 1 foot, we can say that there are 72 inches in 6 feet. Combined with the other 3 inches, we can say that Marco is a 75 inches tall.

Now, we can multiply the number of inches we found by 2.54 to get Marco's height in centimeters. This gives us 190.5 cm.

Answer:

192 cm

Step-by-step explanation:

14 Jones downloaded 9 apps onto his tablet in 36 seconds. At this rate, how many apps could hedownload in one minute? (36 seconds=3/5)