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Scorpion4ik [409]
3 years ago
15

The school store buys granola bars for $0.40 each and sells them for 0.65 .What is the percent markup?

Mathematics
1 answer:
Olegator [25]3 years ago
8 0

The percent markup is 62.5%

The work is attached in the image.

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here is a variable, y, with five observations: 42, 86, 6, 14, 22 the mean of y is 34. here is the formula for calculating the st
34kurt

                           

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5 0
1 year ago
Which of the following are identities? Check all that apply
Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}

Double angle tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula sin2\alpha =2sin\alpha *cos\alpha

sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)

D) False No further development towards a Trig Identity

[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)

7 0
4 years ago
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Furkat [3]
Please explain more to the question where do the numbers go
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4 years ago
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This is Anya's solution for the equation x ^ 2 - 6x - 7 = 0 Is her solution correct ? Explain your answer in detail points ANSWE
tia_tia [17]

Answer:

Anya is incorrect.

Step-by-step explanation:

=)

The correct answer is x = −1 or x = 7

=)

5 0
3 years ago
Read 2 more answers
How do you factor n^2-4n=0
Sveta_85 [38]
     n² - 4n = 0
n(n) - n(4) = 0
    n(n - 4) = 0
n = 0    or    n - 4 = 0
                     + 4 + 4
                        n = 4

Solution Set: {0, 4}
3 0
3 years ago
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