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Gennadij [26K]
3 years ago
12

HELPPP! I need step by step!

Mathematics
2 answers:
DochEvi [55]3 years ago
5 0

Answer:

Step-by-step explanation:

P(A) = 144/200  = 0.72

P(B) = 141/200  = 0.705 = 0.71

The two probabilities are similar but different. From the table, a large number of students who play guitar are also left-handed: 116. So the two probabilities are NOT independent - if u are left-handed, u are more likely to play guitar n vice versa.

skad [1K]3 years ago
3 0

Answer:

Step-by-step explanation:

P(A) = Probability of a student knowing how to play guitar

= no. of students who know how to play guitar / total no. of student

= 144/200

= 0.72

P(B) = Probability of a student is left-handed

=  no. of students who is left-handed / total no. of student

= 141/200

= 0.705

P(A) and P(B) are calculated to be two real numbers and do not depend on each other. So event A and B are independent.

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How are angles used in daily life?
Gennadij [26K]

Answer: Angles are used in daily life. Engineers and architects use angles for designs, roads, buildings and sporting facilities. Carpenters use angles to make chairs, tables and sofas. Artists use their knowledge of angles to sketch portraits and paintings.

Step-by-step explanation:

6 0
2 years ago
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I need help with this​
Ostrovityanka [42]

Answer:

A

Step-by-step explanation:

ABC triangle is 1/2 the size of DEF triangle. In order to transform ABC to DEF, the scale has to be doubled and the point on the y-axis has to move down to 10

8 0
3 years ago
I need help 8th grade math
vladimir1956 [14]

Answer:

the slope shows that the average rating increased 0.4 points per month

Step-by-step explanation:

the equation is written in slope-intercept form. aka y=mx+b. m represents the slope and b represents the y-intercept. therefore in the equation y=0.4x+3 the slope is 0.4

hope this made sense and helped you for future problems :)

6 0
2 years ago
Read 2 more answers
Please help ASAP it’s due in 4 minutes
maxonik [38]

Answer:

a) well we know the hypotenuse and we know that all sides are 90 degrees, and that its an even square, so if we split it into a triangle , we know that the other 2 angles are 45 degrees total, with this we can calculate  the other 2 sides, which round to 10 inches.

b) if we know the sides of the first side, knowing the fact that its a square we know that all sides are even, therefore, all sides are 10 inches, the formula the finding the perimeter is basic:

P=L(2) + W(2)

L being length, W being width and P being perimeter

so we add up all 4 sides, here is the equation:

10 + 10 + 10 + 10 = 10 x 4 = 40

With this, we know that the perimeter is 40 inches total

c) knowing how long the sides are, we can figure out the area through another basic formula:

A=L X W

With A meaning Area

since its a square, we know all the sides are even, so the width and length are both 10...

10 X 10 = 100

Step-by-step explanation:

I Hope I Helped!

3 0
3 years ago
Find the area of an equilateral triangle (regular 3-gon) with the given measurement. 6-inch radius A = sq. in.
katovenus [111]
\bf \textit{area of an equilateral triangle}\\\\
A=\cfrac{s^2\sqrt{3}}{4}\qquad 
\begin{cases}
s=length~of\\
\qquad a~side\\
-------\\
s=6
\end{cases}\implies A=\cfrac{6^2\sqrt{3}}{4}\implies A=\cfrac{36\sqrt{3}}{4}
\\\\\\
A=9\sqrt{3}
8 0
3 years ago
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