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Korolek [52]
4 years ago
12

100 students were surveyed. Of those surveyed, 60% said they had a sister. Of that group, 30% also had a brother. Of the student

s who did not have a sister, 50% had a brother.
Mathematics
1 answer:
ivanzaharov [21]4 years ago
7 0

What is the question? Is it is a true or false this is a true.

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Please help me!!! I need help bad and my parents don't know this stuff.....
galben [10]

Answer:

Option A

Step-by-step explanation:

To be considered skew lines, both must not intersect or be parallel.

4 0
3 years ago
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Select the correct answer.<br> Find the inverse of function f. F (x) = 1/3x -2
natta225 [31]

Answer:

D. F-1(x) = 3x + 6

<em>Brainliest, please!</em>

Step-by-step explanation:

y (F(x)) = 1/3x - 2

x = 1/3y - 2

x + 2 = 1/3y

y (F-1(x)) = 3x + 6

8 0
3 years ago
Multiply (3w^2-4w+7)(5w+2) Simply the answer
Blizzard [7]

Answer:

− 3 w 2 − 9 w − 4

Step-by-step explanation:

Subtract  6 w 2  from  3 w 2 − 3 w 2 − 5 w − 6 -4 w + 2 Subtract  4 w  from  − 5 w .− 3 w 2 − 9 w − 6 + 2 Add − 6 add 2 . -3 w 2− 9 w− 4

6 0
3 years ago
A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that
Alex73 [517]

Answer:  3528.25

Step-by-step explanation:Make a sideview sketch

you should have 2 triangles, one right-angled containing the height and a scalene triangle with angles 24° , 153° (the supplement of 27°) and 3°

the side opposite the 3° angle is 1000

by let the side opposite the 24° be x, (also the hypotenuse of the right-angled triangle)

x/sin24 = 1000/sin3

x = 1000sin24/sin3

let the height of the mountain be h

sin 27 = h/x

h = x sin27 = (1000sin24/sin3)(sin27)

= 3528.25

8 0
3 years ago
A salesperson works 40 hours per week at a job where she has two options for being paid. Option A is an hourly wage of ​$28. Opt
Karolina [17]
Option b!!!!!!!!!!!!!
6 0
3 years ago
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