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NNADVOKAT [17]
3 years ago
10

What is the percent change of 20 - 60?

Mathematics
2 answers:
Mrrafil [7]3 years ago
7 0

Answer: 40%

Good luck on future problems.

Sergeeva-Olga [200]3 years ago
3 0
40% is the answer ...
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Given the equation f(x) = (x + 3)2 – 8, fill in the blanks:
Neko [114]
Quadratic f(x) = (x -h)² +k has vertex (h, k) and axis of symmetry x=h. When k is negative, the number of real solutions is 2, because both branches of the function cross the x-axis.

In your equation, h = -3 and k = -8.

Axis of symmetry: x = -3
Vertex: (-3, -8)
Number of real solutions: 2

4 0
3 years ago
Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2
r-ruslan [8.4K]

Answer:

The value of given expression is \frac{21}{128}.

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

q=1-p=1-\frac{1}{2}=\frac{1}{2}

The given expression is

C(n,x)p^xq^{n-x}

It can be written as

^nC_xp^xq^{n-x}

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}

\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}

\frac{7!}{2!5!}(\frac{1}{2})^{2+5}

\frac{7\times 6\times 5!}{2\times 5!}(\frac{1}{2})^{2+5}

21(\frac{1}{2})^{7}

\frac{21}{128}

Therefore the value of given expression is \frac{21}{128}.

7 0
3 years ago
an article when sold at a profit of 5% yields rupees 50 more than when sold at a loss of 5% what was the cost price of the artic
ziro4ka [17]

I'm going to assume that the question should say “at a profit of 5%”.

Restate question in the form of a equation.

Let C = the cost price of the item.

C + 0.705 C = C - 0.05 C + Rs 50

0.05 C = - 0.05 C + Rs 50

0.10 C = Rs 50

C = Rs 500

The cost price of the item is Rs 500

I hope this help you

6 0
3 years ago
Helppppppppppppppppppppppp fasttttt
WARRIOR [948]
Iit is the first choice where it says the side length of the white square is b -a....
7 0
4 years ago
How do you interpret the value of the mean or the median in a situation
natka813 [3]

Answer:

Adding all the numbers together and dividing by the number of numbers

Example:

1, 3, 5, 6, 6, 6, 8, 8, 35, 46

Adding them together results in 124

124 divded by the number of numbers is 124 / 10 = 12.4

So the mean / median in this example is 12.4

(I think, hopefully this helps and I hope you have a nice day!)

3 0
3 years ago
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