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MAXImum [283]
3 years ago
5

Please someone help me on these questions

Mathematics
2 answers:
NikAS [45]3 years ago
6 0

Hey there! :)

Answer:

a) 24 cm²

b) 40.04 cm²

--------------------

Use the formula A = l × w to solve for each rectangle's area:

a)

8 × 3 = 24 cm².

b)

5.2 × 7.7 = 40.04 cm²

Inessa [10]3 years ago
4 0

Answer:

a) 24

b) 40.04

Step-by-step explanation:

a) Area of a rectangle: length x width

length = 8

width = 3

Plug these values into the equation above:

8 x 3 = 24

b) Same steps as above except with different values for length and width

5.2 x 7.7 = 40.04

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Suppose that y varies inversely with x. Write a function that models the inverse function. x = 15 when y = 2.
shutvik [7]
Inverse variation means y=k/x (direct variation is y=kx)

You are given a point, so you can solve for the constant k...

2=k/15

k=30 so the function is:

y=30/x
8 0
3 years ago
-7(-2x - 3) = 35<br>x=?<br><br>-8(4x + 3) = 40<br>x=?<br><br>2(8 - 5x) = -44<br>x=?
STALIN [3.7K]
Use distributive property: multiply the number outside the bracket by each number inside it

1. 14x+21=35 14x=14 x=1
2. -32x-24=40 -32x=64 x= -2
3. 16-10x=-44 -10x=-60 x=6
5 0
3 years ago
Need answer fast u better give it to me<br> i love u
Basile [38]

Answer:

  • <u>B) A = 2x² - 8x + 8</u>

Step-by-step explanation:

<u>Area of a triangle</u>

  • A = 1/2bh

Here,

  • b = 2x - 4
  • h = 2x - 4

<u>Solving</u>

  • A = 1/2 (2x - 4) (2x - 4)
  • A = 1/2 (2x - 4)²
  • A = 1/2 (4x² - 16x + 16)
  • <u>A = 2x² - 8x + 8</u>
5 0
3 years ago
Read 2 more answers
A neighborhood was given a vacant lot in the shape of a rectangle on which to build a park. The base of the lot is 72.2 feet and
Darya [45]

Answer:

We are given a rectangular lot with dimensions 72.2 feet long and 50 feet wide.

1. To find the size of the park, we need to find the AREA of the rectangular lot.

Area of a rectangle = Length × Width

i.e. Area of a lot = 72.2 × 50

i.e. Area of a lot = 3610 feet²

Thus, the size of the park is 3610 feet².

2. To find the amount of fencing needed, we need to find the PERIMETER of the rectangular lot.

Perimeter of rectangle = 2 × ( Length + Width )

i.e. Perimeter of the lot  = 2 × ( 72.2 + 50 )

i.e. Perimeter of the lot  = 2 × 122.2

i.e. Perimeter of the lot  = 244.4 feet.

Thus, the amount of fencing needed for the park of the park is 244.4 feet.

7 0
3 years ago
Read 2 more answers
The length of a rectangle is 7 inches longer than it is wide. If the area is 44 square inches, what are the dimensions of the re
MatroZZZ [7]
Area = *Longer Side* x *Shorter side*

44 = (x + 7) * x
44 = x^2 + 7x
0 = x^2 + 7x - 44
0 = (x + 11)(x - 4)
0 = x + 11 OR 0 = x - 4
x = -11*impossible* OR x = 4
So x = 4
8 0
3 years ago
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