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maw [93]
3 years ago
10

Aya and Kendra want to estimate the height of a tree. On a sunny day, Aya measures Kendra's shadow as 3 meters long, and Kendra

measures the tree's shadow as 15 meters long. Kendra is 1.5 meters tall. How tall is the tree?
Mathematics
2 answers:
densk [106]3 years ago
6 0

Answer:

tree=4.5 meters tall

Step-by-step explanation:

1.5*3=4.5

Ksivusya [100]3 years ago
5 0

Answer:

7.5 meters

Step-by-step explanation:

One way to do the problem is to note that there is a dilation (scale) factor of 5 on the shadows, so there must be that factor on the heights too. Another way is to note that the shadows are twice as long as the heights.

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What’s the area of this figure
kvasek [131]

Answer:

743.25m^2

Step-by-step explanation:

Area of triangle = 1/2bh

= 1/2 x 30 x 26

= 390

Area of semi circle = 1/2 πr^2

= 1/ 2 x 3.14 x 15 x15

=353.25m^2

= 390 + 353.25

= 743.25m^2

8 0
3 years ago
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Find the sum. Enter your answer in the box below as a fraction, using the slash mark ( / ) for the fraction bar.
Rom4ik [11]

Answer:

5/7

Step-by-step explanation:

2/7 + 3/7

Denominator are equal so adding numerator,

(2+3)/7 = 5/7

5 0
3 years ago
5 Points
Simora [160]

Answer: the answer is indeed (4,8)

Step-by-step explanation:

4 0
3 years ago
What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = x2 − 4x + 5, and what does it mean about the num
Sedaia [141]
Discriminant, D = b² - 4ac

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a = 1, b = -4, c = 5

D = b² - 4ac = (-4)² - 4*1*5 = 16 - 20 = -4

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Discriminant is -4, so the equation has no real roots.

The second option is correct.   
6 0
3 years ago
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What is the simplest form of this expression? -x^3(5x+1)+4x^4
Fantom [35]

Answer:

-x^3*(x + 1)

Step-by-step explanation:

Perform the indicated multiplication and then write out all the terms in descending order by powers of x:

-x^3(5x+1)+4x^4  =  -5x^4 - x^3 + 4x^4

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7 0
3 years ago
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