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Vsevolod [243]
4 years ago
7

In this figure, a and b areA. verticalB. equalC. complementary.D. supplementary.

Mathematics
1 answer:
Andreas93 [3]4 years ago
8 0
It is a supplementary angle. D because the add up to 180.
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A shopkeeper buys two types of tea one at $20 for 10 kg and the other at $23 for 10 kg. He mixes the two types and the mixture i
lorasvet [3.4K]
Let us take the case of first type of tea
Cost of 10 kg of tea one = $20
Then
Cost of 1 kg of tea one = (20/10) dollars
                                     = 2 dollars
Now let us take the case of the second kind of tea
Cost of 10 kg of tea = $23
Then
Cost of 1 kg of tea = (23/10) dollars
                               = 2.3 dollars
So
The mixture of 1 kg of tea one
and 1 kg of second type of tea will cost = (2.0 + 2.3) dollars
                                                                = 4.3 dollars
Then the cost of 2kg mixture of tea costs = 4.3 dollars
So
The cost of 10 kg mixture will cost = (4.3/2) * 10 dollars
                                                         = 4.3 * 5 dollars
                                                        = 21.5 dollars
Then
The amount of profit made by selling 10 kg tea at $38 = (38 - 21.5) dollars
                                                                                       = 16.5 dollars
So
Percentage of profit made = (16.5/21.5) * 100
                                           = 1650/21.5
                                           = 76.74 percent
So the percentage of profit made is 76.74%.
3 0
3 years ago
How do you answer the picture below?
3241004551 [841]

Answer:

42cm²

Step-by-step explanation:

because if the perimeter of the rectangle is 28 then the length is 5, 5 - 11 = 6, the formula for finding the trapezium is to add the 2 parallel sides, half them, then times them with the length so your sum will look like this, 5+9=14, (i knew the other side was 9 as the length of AB is the same as the length of FC, which is the one of the parallel sides of the trapezium) then we do 14÷2=7, finally we times 7 by 6 which is 42cm²

3 0
3 years ago
What is the answer tie this problem (show ALL work please and thankyou) 1/3(18+12q)=6(2q-7)
qaws [65]
\frac{1}{3}(18 + 12q) = 6(2q - 7)   Use the Distributive Property on both sides
  6 + 4q = 12q - 42   Subtract 12q from both sides
   6 - 8q = -42          Subtract 6 from both sides
       -8q = -48           Divide both sides by -8
          q = 6
7 0
3 years ago
A hunter is at a point on a riverbank. He wants to get to his cabin located 2 Miles North and 8 Miles West. He can travel 5 Mph
miskamm [114]

Answer:

Option A

Step-by-step explanation:

A hunter travels to his cabinet located at 2 Miles North and 8 Miles West.

Let "d" be the distance traveled before reaching the rocky ground at point say "P". Let the cabin be at "C"

The distance between C and P is given by

\sqrt{(2^2+(8-d)^2}\\

Let "t" be the time taken to travel distance CP.

T = \frac{d}{5} + \frac{\sqrt{2^2+(8-d)^2} }{3}

Minimum time will be when "t" is equal to zero

Differentiating the above equation wrt "d", we get -

= \frac{1}{5} + \frac{1}{3} (\frac{-2(8-d)}{2\sqrt{2^2+(8-d)^2} } )= 0\\\frac{1}{5} = \frac{1}{3} \frac{(8-d)}{\sqrt{4+(8-d)^2} } \\3\sqrt{4+64+d^2-16d} = 40-5d\\

On squaring both the sides , we get -

3\sqrt{4+64+d^2-16d} = 40-5d\\9(68+d^2-16d)= 1600+25d^2 -400d\\612+9d^2-144d=1600+25d^2 -400d\\16d^2-256d+988=0\\d_1 = 9.5\\d_2 = 6.5

"d" cannot be greater than 8 miles.

Hence, the value of "d" is equal to 6.5

Option A

8 0
3 years ago
while taking attendance Mrs.Lee noticed 2 out of 25 students were absent. What percent of students were absent?
Maurinko [17]

Answer:

0.5%

Hope this helps!!

If it's right i'm trying to get 5 brainlyest

8 0
3 years ago
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