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3 years ago

If oyu answer ill mark you as a brainlest it gives you 70 points and i will follow and answer any questions you have i promise.

Mathematics

2 answers:

leva [86]3 years ago

8 0

B
27+90=117
180-117=63
Angle A = 63
A + B = 180
180-63=117
Angle B = 117
B + C = 180
180-117=63
Angle C = 63

lutik1710 [3]3 years ago

7 0

Answer:

Step-by-step explanation:

brainliest?

also u lied 70 points?!?!?!

also u better answer my questions

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The diagram below gives the dimensions of a swimming pool. 18 ft , 20ft, 36ft (c) What is the total area of the swimming pool? E

WARRIOR [948]

The picture in the attached figure

Part 1) <span>What is the total area of the swimming pool?
</span>
we know that
<span>area of the swimming pool=area rectangle-area semi circle

area rectangle=20*36-----> 720 ft</span>²

area semicircle=pi*r²/2
r=18/2----> 9 ft
area semicircle=pi*9²/2----> 127.17 ft²

area of the swimming pool=720 ft²-127.17 ft²----> 592.83 ft²

the answer Part 1) is
The area of the swimming pool is 592.83 ft²

Part 2) <span>What is the perimeter of the swimming pool?
</span>
perimeter of the swimming pool=perimeter of rectangle-18 ft+perimeter semi circle
perimeter of rectangle=2*[20+36]---> 112 ft

perimeter semi circle=2*pi*r/2----> pi*r
r=9 ft
perimeter semi circle=pi*9----> 28.26 ft
so
perimeter of the swimming pool=112 ft-18 ft+28.26 ft----> 122.26 ft

the answer Part 2) is
122.26 ft

6 0

3 years ago

The sales tax in one state is 5%. Write a function rule for finding the total cost of an item with selling price x. Then find th

Svetradugi [14.3K]

Answer:

f(x) = .05x; $5.50

Step-by-step explanation:

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2 years ago

What is the least possible value of (x+1)(x+2)(x+3)(x+4)+2019 where x is a real number?

Mrrafil [7]

The least possible value of (x+1)(x+2)(x+3)(x+4)+2019 where x is a real number is 2018

<h3>What is an Expression ?</h3>

An expression is a mathematical statement consisting of variables , constant and mathematical operators.

The expression given is

(x+1)(x+2)(x+3)(x+4)+2019

To find the minimum value

(x+1)(x+2) = ( x² +3x +2) = ( x +5/2)² - 9/4

(x+3)(x+4) = (x² +7x +12) = ( x +5/2)² -1/4

(x+1)(x+2)(x+3)(x+4) = ( x +5/2)⁴ - 5/2 ( x +5/2)² +9/16

Considering ( x +5/2)² = y

(x+1)(x+2)(x+3)(x+4) = y² - 5/2y + 9/16

(x+1)(x+2)(x+3)(x+4) = ( y - 5/4)² - 1

(x+1)(x+2)(x+3)(x+4) = ( ( x +5/2)² -5/4)² - 1

The minimum value when x is a real number is -1

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-1 +2019 = 2018

x has two possible real solution

and the least possible value of (x+1)(x+2)(x+3)(x+4)+2019 where x is a real number is 2018.

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4 0

2 years ago

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Twice the sum of m and n.

Sholpan [36]

2(m+n) is the answer. The question is asking for the sum of m and n then multiplying that sum by 2

3 0

3 years ago

Solve the system using elimination.<br> 2x + 3y = -2<br> 3х – 6у = 18

Mashutka [201]

Answer:

x = 2 and y = -2

Step-by-step explanation:

We must first eliminate the y-variable:

2x + 3y = -2

3x - 6y = 18

4x + 6y = -4

3x - 6y = 18

_________

7x = 14

x = 2

Since we know x=2, we plug that back into one of the original equations to find y:

2x + 3y = -2

2(2) + 3y = -2

4 + 3y = -2

3y = -6

y = -2

Therefore, x = 2 and y = -2

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2 years ago

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