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avanturin [10]
3 years ago
14

If the cost price of an article is 25% of its selling price , then what is the profit in percentage?

Mathematics
1 answer:
Radda [10]3 years ago
4 0

Answer:

I think 75%.................

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What are the coordinate of the point that is 1/5 of the way from A9-7, "-4)" to B(3, 6)? (1, 4) (-5, 0) (-5, "-2)" (0, 3)
Mkey [24]

Answer:

-5 - 2

Step-by-step explanation:

4 0
2 years ago
For which function will both ordered pairs (2, 8) and (6, 12) be solutions?
olchik [2.2K]
Y= 6 + x

Plug the numbers into the equations, for each ordered pair substitute the first number (2) for x and the second number (8) for y...

Do the same thing with (6, 12) and if the number on each side of the equals sign is the same for both ordered pairs then you have the solution.
Hope that helps!
7 0
3 years ago
Without drawing the graph of the equation, determine how many points the given equation have in common with the x-axis and where
Gala2k [10]
Remark
It's asking you to complete the square to find the vertex. 

Solve
y = -2x^2 + x + 3 Put brackets around the first 2 terms.
y = (-2x^2 + x) + 3    Pull out the 2.
y = -2(x^2 - 1/2 x) + 3 Be especially observant of the sign on 1/2x Divide the middle term's number by 2 and square it. 
y = -2(x^2 - 1/2 x + [(1/2) / 2]^2 ) + 3 [1/2 divided by 2 is 1/4. (1/4)^2 = 1/16; 2*(1/16) = 1/8
y = - 2(x^2 - 1/2 x + (1/4)^2 ) + 3 + 1/8
y = -2(x - 1/4)^2 + 3 1/8

Comment
Answer to your question. The maximum value (3 1/8) is above the y axis. That means the graph of the equation crosses the x axis twice. I'm going to include the graph because in answering the question, there is no harm in seeing the graph.

4 0
3 years ago
What is the volume of the composite figure? round to the nearest hundredth
Mariana [72]

Answer:

Composite figures are composed of several geometric shapes and are three-dimensional shapes. To find the volume of the entire shape you find the volume of each individual shape and add them together. The second figure consists of a cylinder and a hemisphere

5 0
2 years ago
What is the value of a?
Annette [7]

Answer:

<h2>a = 16</h2>

Step-by-step explanation:

Look at the picture.

The formula of an area of a trapezoid is:

A=\dfrac{b_1+b_2}{2}\cdot h

b_1,\ b_2 - bases

h - height

We have:

A=128,\ b_1=a+2,\ b_2=a-2,\ h=8

Substitute:

128=\dfrac{a+2+a-2}{2}\cdot8\\\\128=\dfrac{2a}{2}\cdot8

128=8a          <em>divide both sides by 8</em>

16=a\to a=16

8 0
3 years ago
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