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Daniel [21]
4 years ago
9

1) Irene places a mirror on the ground 24ft from base of an oak tree.she walks backward until she can see the top of the tree in

the middle of the mirror. At that point, Irene’s eyes are 5.5 above the ground, and her feet are 4 ft from the mirror.How tall is the oak tree?

Mathematics
1 answer:
zimovet [89]4 years ago
6 0

<u>Answer:</u>

Oak tree is 33 ft tall.

<u>Step-by-step explanation:</u>

We know that Irene places a mirror on the ground and walks backwards such that the mirror is in between her and the oak tree (as shown in the attached picture).

Given the distance of Irene's eyes from ground, distance between oak tree and mirror and distance between mirror and Irene, we are to find the height of the tree.

For this, we will use the ratio method:

\frac{T}{24} =\frac{5.5}{4}

T = 33 ft

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An experiment consists of drawing 1 card from a standard​ 52-card deck. Let E be the event that the card drawn is a 10. Find​ P(
viva [34]

The are 4 different possibilities to draw a ten, namely a ten of the four different suits. The probability of the event is the ratio of the 4 possibilities and the total number of possible choices, whcih is 52:

P(E) = 4/52 = 1/13 or about 7.7%

6 0
3 years ago
Thank you guys for helping me :) :)
Ainat [17]

Answer:

The second one is right

Step-by-step explanation:

Hope it helpssss

4 0
3 years ago
Which one ????????????
gregori [183]
B is your answer because if u look at it the
5 0
4 years ago
5*9 (sqrt 10)^3= Help please
Nikitich [7]
Use BODMAS or BIDMAS (Brackets, over Indices, Division, Multiplication, Addition, the Subtraction, this tells you which order to do things in)

As you cant do √10 in the brackets you do the indices, so (√10)³
Split this up to make it easier
(√10)³= √10 x √10 x √10 = 10√10

You the multiply this by 9

9 x 10√10 = 90√10

then multiply by 5

5 x 90√10 = 450√10 = 1423.024947 (using calculator)
7 0
3 years ago
Pls help
solong [7]
Ok let’s solve it

5(x-2)^2-20=0

first let’s foil (x-2)

5(x^2-4x+4) -20=0

now distribute the 5

5x^2 -20x +20 -20 = 0

combine like terms

5x^2-20x=0

take the gcf

5x(x-4)=0

x=0, 4

solutions are (4,0) and (2, -20) because the original vertex form a(x-h)^2+k

7 0
4 years ago
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