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3 years ago

Helpplsssssssssssssss number 2

Mathematics

1 answer:

IceJOKER [234]3 years ago

6 0

Answer:

Step-by-step explanation:

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Of the 74 people who answered "yes" to a question, 15 were male. Of the 71 people that answered "no" to the question, 6 were mal

san4es73 [151]

Answer:

55.2%

Step-by-step explanation:

We have that 74 people answered yes and 71 answered no. So the total number of people who answered the question was 74 + 71 = 145.

Now, of those 145, 74 answering yes, then the probability of saying yes is:

P (Y) = 74/145

We know that 21 (15 + 6) are men, therefore the probability of being a man is:

P (M) = 21/145

Finally, we also know how many people answering that yes, they are men, they are 15, therefore the probability is:

P (Y and M) = 15/145

Finally, we use the "sieve" formula, for the probability that he is a man or that he answered yes.

P (Y or M) = P (Y) + P (M) - P (Y and M)

Replacing we have:

P (Y or M) = 74/145 + 21/145 - 15/145

P (Y or M) = 80/145

P (Y or M) = 0.552

In other words, the probability is 55.2%

7 0

3 years ago

Evaluate f(x) = 5(x-4) when x=10

Tcecarenko [31]

Answer:

Value of $f(10)=30$

Step-by-step explanation:

We have

$f(x) = 5(x-4)$

We need to find $f(10)$

$f(10) = 5(10-4)\\\\=5\cdot6\\\\=30$

7 0

3 years ago

A student spends the same amount each week for bus fare in 5 weeks he spends 115 which equation shows his relationship let's= nu

Damm [24]

Let c represent the cost of bus fare per week

5c = $115

c = $25

The student spends $25 per week for bus fare so the rate is $25

The equation to determine the total cost for "x" number of weeks is:

y = $25x

4 0

4 years ago

Choose the graph that represents the following system of inequalities: y ≥ −3x + 1 y ≤ 1 over 2x + 3 In each graph, the area for

svet-max [94.6K]

Answer:

Correct graph is C

Step-by-step explanation:

Given two inequalities are:

1. $y\leq -3x+1$

2. $y\leq x+3$

Step1 : Remove the inequalities

1. $y=-3x+1$

2. $y=x+3$

Step2 : Finding intersection points of equations

By solving linear equation

$y=-3x+1=x+3$

$-3x+x+3$

$x=-0.5$

Replacing value of x in any equations

we get,

$y=x+3\\$

$y=-0.5+3$

$y=2.5$

Therefore, Point of intersection is (-0.5,2.5)

Step3: Test of origin (0,0)

Here, If inequalities holds true for origin then, shades the graph towards the origin.

For equation 1.

$y\leq -3x+1$

$0\leq -3(0)+1$

$0\leq +1$

True, Shade graph towards origin.

For equation 2.

$y\leq x+3$

$0\leq 0+3$

$0\leq 3$

True, Shade graph towards origin.

Thus, Correct graph is C

6 0

3 years ago

Which of the following statements is true about the three quadrilaterals?

emmasim [6.3K]

A. D and E are similar but not congruent.

8 0

3 years ago