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3 years ago

What is the probability that a student prefers chocolate given that the students is a girl?

Mathematics

1 answer:

koban [17]3 years ago

7 0

Answer:

The probability is 1/2.

Step-by-step explanation:

There are a total of 40 girls that are surveyed and 20 prefer chocolate. If you write that as a fraction 20/40, it simplifies to 1/2.

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What is the equation of the line that passes through (4,3) and (-4,-1)?

german

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ 4 &,& 3~) 
% (c,d)
&&(~ -4 &,& -1~)
\end{array}
\\\\\\
% slope = m
slope = m\implies 
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-1-3}{-4-4}\implies \cfrac{-4}{-8}\implies \cfrac{1}{2}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-3=\cfrac{1}{2}(x-4)
\\\\\\
y-3=\cfrac{1}{2}x-2\implies y=\cfrac{1}{2}x+1$

6 0

2 years ago

Write in standard form: a line through the origin with slope 2/3

nordsb [41]

Answer:

y = 2/3x

Step-by-step explanation:

Slope-intercept formula: y = mx + b

m = 2/3 because the slope is 2/3.

b = 0 because the y value of the origin is 0, as the point is at (0, 0).

That makes y = 2/3x + 0, but adding zero does nothing so you take it out to get y = 2/3x.

5 0

1 year ago

Read 2 more answers

The remaining students surveyed answered they spend no money on music. What percent of the students surveyed do they represent?

I am Lyosha [343]

Answer:

It also investigates different methods for representing survey results through graphs. ... Imagine that you wanted to know the percentage of the people in your town who eat ... For example, if there were 100 students a school, they could each be ... A biased sample does not accurately represent the intended or expected ...

Step-by-step explanation:

8 0

2 years ago

Bacgvcfbbnnnbvvbbbgggggggggggggggg

REY [17]

Answer:

2) x=u/2+1

4) a=g/c

6) x=g-c

8) =g/c

Step-by-step explanation:

hope this is helpful

5 0

2 years ago

Provide the reasons for the fol owing proof

Studentka2010 [4]

Answer:

Option d is correct.

Vertical angles are congruent;

SAS

Step-by-step explanation:

Given: $JK \cong KL$ , $NK \cong KM$

In ΔNKJ and ΔMLK

$JK \cong KL$ and [Side] {Given}

$NK \cong KM$

Vertical angles states that the two lines intersect to make an X, angles on opposite sides of the X are called vertical angles.

i.e $\angle NKJ$ and $\angle MKL$ are vertical angles.

Also, vertical angles are congruent.

$\angle NKJ \cong \angle MKL$ [Angle] [Vertical angles are congruent]

SAS(Side-Angle-Side) postulate states that if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.

then, by SAS postulates;

$\triangle NKJ \cong \triangle MLK$ Hence proved!

Therefore:

Statement Reason

1. $JK \cong KL$ , $NK \cong KM$ Given

2. $\angle NKJ \cong \angle MKL$ Vertical angles are congruent

3. $\triangle NKJ \cong \triangle MLK$ SAS

3 0

2 years ago

Read 2 more answers