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3 years ago

Please (you'll get 25 pts)

Mathematics

2 answers:

Anna11 [10]3 years ago

8 0

16 is "A and E"
17 is "D"
Hope this answers you question.

masha68 [24]3 years ago

8 0

For number 16 it is A and E
and for number 17 is D (I presume)

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The kindergarten class has 10 girls and 10 boys. If two students are chosen at random to be in the school play, what is the prob

Akimi4 [234]

50% because there's equal value of both variables

6 0

3 years ago

Read 2 more answers

14 = 2y/5 what is the solution?

Gnom [1K]

Answer:

y=35

Step-by-step explanation:

y in (-oo:+oo)

14 = (2*y)/5 // - (2*y)/5

14-((2*y)/5) = 0

(-2/5)*y+14 = 0

14-2/5*y = 0 // - 14

-2/5*y = -14 // : -2/5

y = -14/(-2/5)

y = 35

5 0

3 years ago

Jack looks at a clock tower from a distance and determines that the angle of elevation of the top of the tower is 40°. John, who

zmey [24]

Answer:

18.7939 m

Step-by-step explanation:

-Let x be the distance between John and clock tower.

-Let y be the vertical distance from the eyes of the two men standing to the top of the clock tower.

#Taking the right triangle ACD:

$\Tan \ theta=\frac{Perpendicular \ Height}{Base}\\\\Tan \ 60\textdegree=\frac{y+1.5}{x}\\\\y=x \ Tan \ 60\textdegree -1.5$

#Taking the right triangle ABD:

$\Tan \ theta=\frac{Perpendicular \ Height}{Base}\\\\Tan \ 40\textdegree=\frac{y+1.5}{x+20}\\\\y=(x+20)\ Tan \ 40\textdegree -1.5$

#We equate the two yo solve for x and y;

$(x+20)\ Tan \ 40\textdegree -1.5=x\ Tan \ 60\textdegree -1.5\\\\(x+20)\ Tan \ 40\textdegree=x\ Tan \ 60\textdegree\\\\0.8391x+16.7820=1.7321x\\\\x=18.7939$

Hence, John's distance from the tower's base is 18.7939 m

8 0

3 years ago

PLEASE HELP! I REALLY NEED HELP WITH THIS!!!

Papessa [141]

-19w-3

Step by Step:
Difference means subtraction so:

-14w-3-5w

-19w-3

If this helps, could you mark me brainliest please?

3 0

2 years ago

What Is The Area Of This Trapezoid?

DerKrebs [107]

80 square units
______________________________________________
The Formula for the area of a trapezoid is A= (a+b/2)h

A= 3+17/2 (8)
A= 20/2 (8)
A= 10 (8)
A = 80

5 0

2 years ago