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4 years ago

Vertical angles are supplementary, true or false?

Mathematics

2 answers:

scoundrel [369]4 years ago

6 0

Answer:

False.

Step-by-step explanation:

Supplementary angles always equal up to 180 degrees.

beks73 [17]4 years ago

4 0

Answer:

False

Step-by-step explanation:

Vertical angles are a pair of opposite angles created by intersecting lines. The Vertical Angles Theorem states that if two angles are vertical, then they are congruent.

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A political candidate has asked you to conduct a poll to determine what percentage of people support her.

Sergio039 [100]

Answer:

666

Step-by-step explanation:

From this question,

a = 1-99%

a = 1-0.99

a = 0.01

5% = z(0.05) = 2.58 when we check the standard normal table

Therefore we calculate n as:

n = (z/E)²*p*1-p

Z = 2.58

E = 0.05

P = 0.5

1-p = 0.5

(2.58/0.05)²x0.5x0.5

= 51.6²x0.5x0.5

= 665.64

Therefore n is approximately 666.

5 0

3 years ago

Can someone help I’ll give brainliest??

adelina 88 [10]

They were multiplied by 4 each week

7 0

3 years ago

Which step is missing from the following proof?

Ray Of Light [21]

Answer:

1)commutative property of addition

2)commutative property of addition

3)B

6 0

4 years ago

Please help need this done by tomorrow thank you [PHOTO]

Harman [31]

Hey there!

4x - 16 + 2x + 16 = 180 (linear pair)

4x + 2x - 16 + 16 = 180

6x = 180

x = 180/6

x = 30.

Hope it helps ya!

4 0

2 years ago

X + y = 152, 8.5x + 12y = 1,656 How many hats were sold?

Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

$x+y = 152\\8.5x+12y=1656$

From equation 1:

$x = 152-y$

Putting the value of y in equation 2

$8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104$

Now we have to put the value of y in one of the equation to find the value of x

Putting y = 104 in the first equation

$x+y = 152\\x+ 104 = 152\\x = 152-104\\x = 48$

Hence,

The solution of the system of equations is x = 48 and y = 104

The value of variable which was assumed for number of hats, is the total number of hats.

6 0

3 years ago