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3 years ago

2x(9x^2+5y) polynomial operations

Mathematics

1 answer:

Annette [7]3 years ago

6 0

Mathpapa will give you the answer to this and explain the steps!

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Please answer thisss <3

lawyer [7]

Answer:

i think . it is c

Step-by-step explanation:

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3 years ago

Susan has 343 cookies. She packs as many of them as she can equally in 19 boxes. She gives the rest to Mike. How many cookies do

Oksana_A [137]

Answer:

Mike gets just one cookie because she puts 18 cookies in 19 box which will be 19*18 = 342 so just one left

Step-by-step explanation:

I'm feeling bad for Mike to be honest that he just gets one

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2 years ago

Vince has a rectangular rug in his room with an area of 10 ft the length of the rug is 18 inches longer than the width what coul

aev [14]

The length of the rug is 4 ft.

The width of the rug is 2.5 ft.

Explanation:

The area of the rug is 10 ft.

The length of the rug be l.

Let us convert the inches to feet.

Thus, $18 inches = 1.5 ft$

Thus, the length of the rug is $l=1.5+w$

Let the width of the rug be w.

Substituting these values in the formula of area of the rectangle, we get,

$A=length\times width$

$10=(1.5+w)(w)\\10=1.5w+w^2\\w^2+1.5w-10=0$

Solving the expression using the quadratic formula,

$w=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Substituting the values, we have,

$$w=\frac{-15 \pm \sqrt{15^{2}-4 \cdot 10(-100)}}{2 \cdot 10}\\$

$w=\frac{-15 \pm \sqrt{4225}}{20}$

$w=\frac{-15 \pm 65}{2 0}$

Thus,

$w=\frac{-15 + 65}{2 0}\\w=\frac{50}{20} \\w=2.5$ and $w=\frac{-15 - 65}{2 0}\\w=\frac{-80}{20} \\w=-4$

Since, the value of w cannot be negative, the value of w is 2.5ft

Thus, the width of the rug is 2.5ft

Substituting $w=2.5$ in $l=1.5+w$ , we get,

$l=1.5+2.5\\l=4$

Thus, the length of the rug is 4 ft.

4 0

3 years ago

Please help !!!!!!!!!!!!!!!!!!!!!!!!!!!You survey 127 employees, and learn that the number one thing on their wish list is free

valina [46]

Answer:

Step-by-step explanation:

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3 years ago

Steven has a bag of 20 pieces of candy. Four are bubble gum, 4 are chocolates, 4 are fruit chews, and the rest are peppermints.

Delicious77 [7]

There are 20 pieces in the bag all together. Four are chocolate.
The probability of picking a chocolate with his eyes closed is 4/20.

In simplest form, that's 1/5 or 20% .

6 0

4 years ago