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nadya68 [22]
2 years ago
8

PLEASE SOMEONE HELP ME

Mathematics
2 answers:
lilavasa [31]2 years ago
8 0

Answer: <em>50°</em>

Step-by-step explanation:

<em>Remember a straight line must equal 180°</em>

<em>So all angles on the line must add up to 180°</em>

<em>So let's take our given angles of 65° and add them together</em>

<em>65°+65°=130°</em>

<em>Now let's take 180°-130°=</em><em>50°</em>

Hitman42 [59]2 years ago
5 0

Answer:

50

Step-by-step explanation:

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The sum of a number, 1/6 of that number, 2 1/2 of that number, and 7 is 12 1/2. Find the number
Whitepunk [10]

Answer:

The sum of a number, 1/6 of that number, 2 1/2 of that number, and 7 is 12 1/2. Find the number?

the number is 2.409

Step-by-step explanation:

based on the question;

let the  number  N

1/6 of N = (1/6)N

21/2  of N = ( 5/2)N

now, the sum of  a number (N)  1/6 of that number(1/6)N , (5/2)N and 7  will be expressed as

N + ( 1/6)N + (5/2)N + 7 = 12 1/2

N + N/6 + 5N/2 + 7 = 25/2

find the lcm of the equation

we have;

(6N + N +15N + 42)/6= 25/2

(22N + 42)/6 = 25/2

Using cross multiplication we have

44N + 84 =  150

Collecting the like terms

44N = 150- 84

44N = 106

Divide both sides by 44

44N/44= 106/44

N = 2.409

3 0
3 years ago
Trying to help my daughter can't figure this out.
Anvisha [2.4K]

Answer:

width equals 16

length = 20

Step-by-step explanation:

Hello there!

we know that the perimeter is 72 m

and the width is 4 m less then the length

perimeter is 2w+2l

w=width and l = length

72 + (2x-4) = 72+8 = 80

80 / 4 (because there are 4 values, w, w, l, l ) = 20

so now...

20 - 4 = w

16 = w

and 20 = l

16+16 = 32

20+20 = 40

32+40 = 72

7 0
3 years ago
Plsssssss belpppppppppp
irinina [24]
Since that is a triangle the expression would be b x h  / 2. So 12*12 = 144 / 2 = 72. The answer is 72. 
8 0
3 years ago
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Kazeer [188]

Answer:

The solutions are given below:

Step-by-step explanation:

x(x-3)+4(x²+2)

= x²-3x+4x²+8

= x²+4x²+8-3x

= 5x²+8-3x

2(a+5)-3(a+7)

= 2a+10-3a-21

= 2a-3a+10-21

= -a-11

xy(x²yz-xy²z+xyz²)

= x³y²z-x²y³z+x²y²z²

-4(a²-2a+8)

= -4a²+8a-32

<h3>Hope it helps !</h3>
8 0
2 years ago
Read 2 more answers
A cylinder is sliced horizontally, parallel to its base, and vertically. Which of the following could represent cross sections o
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C- CIRCLE AND RECTANGLE!

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3 years ago
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