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Vikentia [17]
3 years ago
13

Units are squared when dealing with area but not when dealing with perimeter

Mathematics
1 answer:
Mashcka [7]3 years ago
7 0
The answer is true I believe 
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Helpppppppp will mark brainlest​
Shkiper50 [21]

Answer:

-8

Step-by-step explanation:

what do you think, when you look at the examples given in the problem definition ?

don't you see the pattern, that f(x) = x+2 ?

f(1) = 1+2 = 3

f(2) = 2+2 = 4

f(3) = 3+2 = 5

so, if we follow this assumption, then

f(-10) = -10 + 2 = -8

5 0
2 years ago
If sin(Ф)=3/5, and cos(Ф)=-4/5, which of the following is true?
Juli2301 [7.4K]

Answer:

Step-by-step explanation:

b.) cos((π/2)-Ф)=-3/5 is true because :

cos((π/2)-Ф)= sin(Ф)

8 0
3 years ago
Together, Tom and max have 72 football cards. Tom has 2 more than 4 times as many cards as max has. How many football cards does
frosja888 [35]

Tom has 58 football cards

4 0
3 years ago
D'John saves $8 per week. Arthur saves 4 times the amount D'John saves in the same week. Write an equation that shows how to fin
maw [93]
The variable 'a' represents how much Arthur saves. Because D'John saves $8 per week (7 days), he saves $56. Arthur saves four times more than D'John so $56*4 equals Arthur's total savings for the week; $224. a=$8(7)*4 a=$56*4 a=$224
7 0
3 years ago
Find the volume V of the described solid S. The base of S is the triangular region with vertices (0, 0), (3, 0), and (0, 3). Cro
Reil [10]

Answer:

27/2

Step-by-step explanation:

Given

Vertices (0, 0), (3, 0), and (0, 3)

Since the base of the equilateral in the plane perpendicular to the x-axis goes from the x-axis to the line y = 3 - x.

So, the length of each side of the triangle is (3-x)

Calculating the area;

Area = ½bh

Where b = base = 3 - x

height is calculated as;

h² = (3-x)² + (½(3-x))² --- from Pythagoras

h² = 9 - 6x + x² + (3/2 - ½x)²

Let h² = 0

0 = 9 - 6x + x² + (9/4 - 6/4x + ¼x²)

0 = 9 + 9/4 - 6x - 6/4 + x² + ¼x²

0 = 45/4 - 30x/4 + 5x²/4

0. = 5x²/4 - 30x/4 + 45/4

0 = 5x² - 15x/4 - 15x/4 + 45/4

0 = 5x(x/4-¾) - 15(x/4 - ¾)

0 = (5x - 15)(x/4 - ¾)

5x = 15 or x/4 = 3/4

x = 3 or x = 3

So, h = 3

Area = ½bh

Area = ½ * (3-x) * 3

Area = ½(9-3x)

Volume= Integral of ½(9-3x) {3,0}

V = 9/2 - 3x/2 {3,0}

V = 9x/2 - 3x²/4 {3,0}

V = 9(3)/2 - 3(3)²/4

V = 27/2 - 27/4

V = 27/2

4 0
3 years ago
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