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sammy [17]
3 years ago
8

6a+ -12a plz explain (a=1/2) I don't know evaluating expressions

Mathematics
1 answer:
Marianna [84]3 years ago
7 0

Plug in the 1/2 where the a’s are answer is -3

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okay since the first step is parenthesis, the next step would be exponents but you have none so you skip to multiplication, then you divide

divide is your answer
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3 years ago
Christina goes to market with $50. She buys one papaya for $20 and spends the rest of the money on bananas. Each banana costs $6
maria [59]
x-\ number\ of\ bananas\\\\
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7 0
2 years ago
Which correctly describes the graph shown below
Alborosie
The answer is C. Explanation: The line isn’t a straight line, so it can’t be a linear line. Then, do the vertical line test to see if the line is a function (to do this, draw a vertical line through the graph, and see if it passes more than one point on the graph. If the vertical line passes any more than one point on the graph on any spot, it is not a function), and since the graph fails the vertical line test, it is not a function. Therefore, the answer is C.
5 0
3 years ago
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sampl
pickupchik [31]

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Step-by-step explanation:

Since we have given that

Standard deviation = 4.8 hours

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At 98% level of confidence, z = 2.33

So, It becomes,

0.65=z\times \dfrac{\sigma}{\sqrt{n}}\\\\0.65=2.33\times \dfrac{4.8}{\sqrt{n}}\\\\\dfrac{2.33\times 4.8}{0.65}=\sqrt{n}\\\\n=(\dfrac{11.184}{0.65})^2\\\\n=17.206^2\\\\n=296.051

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vlabodo [156]
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because the number "0" multiplied by any value is still zero we can exlude that from the final equation of the line. In this case since m=0, the line is y=b.

b is the y intercept, or the value of y when x = 0.

So, because y=1 when x is 0, "b"= 1

y=b
y=1

Any questions?
5 0
3 years ago
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