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viva [34]
3 years ago
12

Sarah predicts that 15 percent of all the birds she spots while bird watching will be robins. At the end of the day, she records

that 10 out of the 25 birds she spotted were robins. How does Sarah’s prediction compare with the actual results?
Mathematics
1 answer:
Mashutka [201]3 years ago
8 0
We can turn the probability 10 out of 25 as percentage

\frac{10}{25}×100=40%

The actual result is higher than prediction
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Genrish500 [490]

Answer:

B) Jill omitted a factor pair, which affected the GCF and factored expression.

Step-by-step explanation:

Jill is factoring the expression 13xy-52y. Her work is shown below.  

Factors of 13xy: 1, 13, x, y  

Factors of 52y: 1, 2, 26, 52, y       OOPSIE  she forgot 4,13

GCF: y

Factored expression: y(13x-52)   13y (x-4)

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3 years ago
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Mariulka [41]
Since supplementary angles are angles that equal to 180, you first need to subtract 40 from 180 to find out what the equation equals. This is the layout of the equation. 140=4x+20. Next you subtract 20 from each side, 120=4x then you divide by 4 four, x=30.
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List the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = x5 - 3x2 + 3x + 14
uysha [10]
f(x) = x^5 - 3x^2 + 3x + 14\\\\14\to\{\pm1;\ \pm2;\ \pm7;\ \pm14\}\ and\ \left\{\pm\dfrac{1}{14};\ \pm\dfrac{1}{7}; \pm\dfrac{1}{2}\right\}
4 0
3 years ago
Of 10<br> Find the gradient of the line segment between the points (2,-2) and (0,-6).
Veseljchak [2.6K]

Answer:

<h3>The answer is 2</h3>

Step-by-step explanation:

The gradient of a line given two points can be found by using the formula

m =  \frac{ y_2 - y _ 1}{x_ 2 - x_ 1}  \\

From the question we have

m  =  \frac{ - 6 -  - 2}{0 - 2}  =  \frac{ - 6 + 2}{ - 2}   =   \frac{ - 4}{ - 2}  = 2 \\

We have the final answer as

<h3>2</h3>

Hope this helps you

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5 rubber stamps cost $9.70.
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