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Nutka1998 [239]
3 years ago
11

Simplify: –3(y + 2)^2 – 5 + 6y

Mathematics
2 answers:
GREYUIT [131]3 years ago
8 0
The answer is -3y^2-6y-17
jarptica [38.1K]3 years ago
5 0
I got the same answer as that person^^
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Tracy needs to find the length and width of the equipment storage room where she works. The room is 2 meters longer than it is w
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Answer:

3 meters

Step-by-step explanation:

We assume the storage room is a rectangle, like most rooms, no indication it is otherwise.

We know it's a rectangle and not a square because it is longer than wide.

We have the perimeter measurement (16 meters).

So, we can make the following equation:

2x + 2y = 16

x being the width of the room, y being it's length.  A perimeter is the sum of all sides.

We also know the room is 2 meters longer than wide... so:

y = x + 2

If we replace y in the first equation by its value relative to x, we get:

2x + 2(x + 2) = 16 which becomes

2x + 2x + 4 = 16

4x =12

thus x = 3

Width: 3 meters

Length: 5 meters.

Confirms the 16 meters perimeter.

5 0
3 years ago
Read 2 more answers
What is 63 divided by 28
Mariana [72]

Answer:

2.25

Step-by-step explanation:

63 \div 28 =  \frac{63}{28}  =  \frac{9}{4}  = 2 \frac{1}{4}   = 2.25

4 0
3 years ago
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Is 3 1/2 a whole number
Alina [70]
No it isnt. hope this helps
7 0
3 years ago
Read 2 more answers
An electrician has a piece of wire that is 4 and 3/8 centimeters long. She divides the wire into pieces that are 1 and 2/3 centi
Vlada [557]

Answer:

She has approximately 3 pieces ( 2.625)

Step-by-step explanation:

To get the number of pieces, we need to divide the length of the wire by the individual length of the pieces.

To get the division done, it would be easier to convert what we have into improper fractions

For the piece of wire, the length which is 4 and 3/8 centimeters long will be 35/8 centimeters

while;

the individual length of each of the piece which is 1 and 2/3 centimeters long will be 5/3 centimeters

The number of pieces is thus 35/8 divided by 5/3 = 35/8 * 3/5 = 21/8 = 2.625 which is approximately 3 pieces

6 0
3 years ago
A tabletop in the shape of a trapezoid has an area of 5,658 square centimeters. Its longer base measures 119 centimeters, and th
Sedaia [141]
The formula for finding the area of a trapezoid is: sum of bases*height*1/2
By plugging in the information that we already have, we know: (119+65)*height*1/2=5658
184*1/2*height=5658
92*height=5658
height=61.5cm.

Check:
119+65=184
184*61.5=11316
11316*1/2=5658
3 0
3 years ago
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