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dexar [7]
3 years ago
15

How do i find the area of this stop sign using subtraction?

Mathematics
2 answers:
Pepsi [2]3 years ago
8 0
Split the object then find the 2 areas then subtract
harina [27]3 years ago
5 0

Answer:

745.12

Step-by-step explanation:

30 x 30 = 900 which is the sign if it were a square

then you subtract the four corner pieces

900 - 4(\frac{1}{2}(8.8 x 8.8))

900 - 2(77.44)

900 - 154.88

= 745.12

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A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is
Otrada [13]

Answer:

29.5+/-1.11

= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 29.5

Standard deviation r = 5.2

Number of samples n = 59

Confidence interval = 90%

z-value (at 90% confidence) = 1.645

Substituting the values we have;

29.5+/-1.645(5.2/√59)

29.5+/-1.645(0.676982337100)

29.5+/-1.113635944529

29.5+/-1.11

= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

7 0
3 years ago
Plz help ASAP! thank u
LiRa [457]

Answer: Choice B)

The relation is a function because there are no vertical lines that can be drawn on the graph that pass through more than one point.

This graph passes the vertical line test. Any input (x) leads to one and only one output (y). An example of a graph failing the vertical line test would be a graph that is a sideways parabola.

4 0
3 years ago
Read 2 more answers
Write the new function if the parent function f(x)=-2x-5 is translated 2 units left.
Natali [406]

Answer:

f(x)= -2x-3, im so sorry if this is wrong

Step-by-step explanation:

to translate it left you have to add 2

3 0
3 years ago
Please help me!!!! :) help much needed
Anastaziya [24]
If you had a grid handy, that would help my explanation a lot. First mark 0,0 on your grid. Then draw a line where x = -2 (this should just be a vertical line that intersects (-2,0)). Notice how 0,0 is 2 units away from that line? In order to show a reflection, add 2 units on the other side of the x=-2 line. Mark that dot. Make sure the y value is the same. The x value should be -4.

FIRST REFLECTION: (-4,0)

Onto the second reflection! This is over the y-axis, but since the first reflection is already on the y-axis it wouldn't change.

Final answer: (-4,0)
7 0
4 years ago
Use the zero product property to find the solutions to the equation (x + 2) (x + 3) = 12.
emmainna [20.7K]
The answer is 2 fishing method and divide both sides by 6
3 0
3 years ago
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