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irakobra [83]
3 years ago
8

HELPPP PLZZZ

Mathematics
1 answer:
iogann1982 [59]3 years ago
7 0

Answer:

Step-by-step explanation:

Given: A square tabletop has an area of (9x^2-90x+225)cm^2.The dimensions of the tabletop have the form cx-d, where c and d are whole numbers.

To find: Expression for the perimeter of the tabletop and the perimeter when x=25 centimeters.

solution: Since, we know that area of square =(side)^2, and we are given Area=(side)^{2}=9x^2-90x+225

⇒s^{2}=(3x-15)(3x-15)

⇒s^2=(3x-15)^2

⇒s=3x-15

Thus, side=3x-15.

Now, Perimeter of square is given as =4s

⇒4s=4(3x-15)=12x-60 which is the required expression for the perimeter.

Perimeter when x=25cm, 12x-60=12(25)-60=300-60=240cm.

Therefore, Perimeter=240 cm.

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A scuba diver swam 96 feet beneath the surface of the lake. He then climbs up 49 feet. What is his depth now?
klemol [59]

Answer:

96 - 49 = 47

Step-by-step explanation:

Subtract 49 from 96 to get 47.

6 0
3 years ago
I need help on 8. Find the area
maria [59]

Answer:

<h2>894 mi²</h2>

Step-by-step explanation:

First, let's view the formula which we will use to solve this problem. The area of a parallelogram is: A = bh. A is the area, b is the base, h is the height.

A = bh

Insert the values

A = 37\frac{1}{4} * 24

A = 894 mi^{2}

PLEASE MARK BRAINLIEST!

4 0
3 years ago
You have some tigers. You have some cages. If you put one tiger in each cage, your will have one tiger left over. If you put two
vredina [299]

Answer:

The correct answer is there are 3 cages and 4 tigers.

Step-by-step explanation:

Let there be x cages and y tigers.

According to the first condition, if we put one tiger in each cage, one tiger is left over.

∴ y - x =1

According to the second condition, if we put two tigers in each cage, one cage is left over.

∴ x - \frac{y}{2} =1

⇒ 2x - y = 2

Therefore adding both the equations we get,

y - x + 2x - y = 2 + 1

⇒ x = 3

⇒ y = 4

Therefore there are 4 tigers and 3 cages.

6 0
4 years ago
Please please please help
sattari [20]

Answer:

Part A: It would be a rectangle because the top face is a triangle and since the cut is parallel it would be the same shape.

Part B: It would be a rectangle because the faces that are perpendicular to the base of the rectangle are rectangles so the cut would be the same shape.

Note: The perpendicular sides look like squares, but you do not want to assume that they are squares unless it is stated.

Step-by-step explanation:


4 0
4 years ago
PLEASSEEE HELP ME !
aleksandr82 [10.1K]
(g+f) (3).

=16 hope this helps<3
8 0
2 years ago
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