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oee [108]
3 years ago
5

Can someone please help me ASAP

Mathematics
1 answer:
dimulka [17.4K]3 years ago
7 0
-2,8 is the correct answer
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Marla bought one necklace and two bracelets for $67.50. Use the following information to determine the amount she paid for each
alexdok [17]
Ooh, scary math

n+2b=67.5
n=27
27+2b=67.5
minus 27 both sides
2b=40.50
divide both sides by 2
b=20.25

a bracelet costs $20.25
8 0
3 years ago
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Complete the sentence to explain how to multiply 4.56x1000
s2008m [1.1K]
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4.56 X 1000
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2 years ago
Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE
Viktor [21]

Answer:

<h2> (2, -1)</h2>

Step-by-step explanation:

Given the function f(x) = 8x³ − 12x² − 48x, <em>the critical point of the function occurs at its turning point i,e at f'(x) = 0</em>

First we have to differentiate the function as shown;

f'(x)= 3(8)x^{3-1}- 2(12)x^{2-1} - 48x^{1-1}\\  \\f'(x) = 24x^2 - 24x-48x^0\\\\f'(x) = 24x^2 - 24x-48\\\\At \ the\turning\ point\ f'(x)= 0\\24x^2 - 24x-48 = 0\\\\\\

Dividing \ through \ by \ 24\\\\x^2-x-2 = 0\\\\On \ factorizing\\\\x^2-2x+x-2 = 0\\\\x(x-2)+1(x-2) = 0\\\\(x-2)(x+1) = 0\\\\x-2 = 0 \ and \ x+1 = 0\\\\x = 2 \ and \ -1

Hence the critical numbers of the function are (2, -1)

8 0
3 years ago
Select two values of x that are roots of this equation (picture included)<br><br> x^2+2x-5=0
WINSTONCH [101]

Step-by-step explanation:

A and C are correct options

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3 years ago
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Mia did a study for a health class about the effects of the length of a person's foot and their shoe size. Based on a graph of h
mixer [17]

Answer: The answer is A.

Step-by-step explanation: The only valid conclusion that is listed in the options is choice A. The correct one is that the length of a person’s foot is a cause of their shoe size, which implies that there is also a correlation between the length of a person’s foot and their shoe size.

8 0
3 years ago
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