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hjlf
3 years ago
11

16. If Owen's house is point A (11, 3) and David's house is point B (15, 13),

Mathematics
1 answer:
Sati [7]3 years ago
4 0

Answer:

about 16.248 units

Step-by-step explanation:

Using the distance formula, and rounding to the nearest thousandth, we get 16.248

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• a helicopter hovering at 10 m above the ground is shining a spotlight at a person 30 m away1 . if the person is 2 m tall how l
pshichka [43]

As shown in the figure

Height of helicopter above the ground=30 m

Distance from the base to the point where the person is standing=30 m

height of the person=2 m

Now the person cast the shadow of length x m.

Triangle ABC and triangle EDC are similar.

∵ ∠B= ∠D=90°

∠C is common.

So by AA similarity ΔABC and ΔEDC are similar.

As we know when triangles are similar their sides are proportional.

AB/AD =BC/DC

Let DC=x meter

⇒\frac{10}{x}=\frac{30+x}{x}

⇒5=\frac{30+x}{x}[/tex]

⇒5x=30+x

⇒4x = 30

⇒ x=30/4

⇒ x=7.5 meter

So length of shadow=7.5 meter

2. volume of a sphere of radius r is v (r) =\frac{4}{3}π r^{3}

\frac{\mathrm{d} }{\mathrm{d} r}V=4/3π×3r^2

       =4πr^2


surface area of a sphere of radius r is 4πr^2

b)  Ratio of derivative of volume of sphere to surface area of sphere=\frac{4\pi r^2}{4\pi r^2}

             =1  [ incomplete question but you have written few words ]

4 0
3 years ago
Detroit received 8 over 5 inches of snow in the morning. The city recorded of an 3 over 5inch of snow in the evening. What was t
xenn [34]

Answer:

11/5 inches

Step-by-step explanation:

total snowfall for the day = snowfall in morning + snowfall in evening

= 8 over 5 + 3 over 5 (all in inches)

= 8/5 + 3/5 (all in inches)

Since the denominators are the same (5), we can simply add the numerators up while keeping the denominator

(8/5 + 3/5) inches= (8+3)/5 inches = 11/5 inches = total snowfall for the day

7 0
2 years ago
Divide.<br><br> 38/733<br> Enter your answer in the boxes.
fenix001 [56]

Answer: 0.051

Step-by-step explanation: Am very big brain, My IQ is above your comprehension.

8 0
3 years ago
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Ethan has a total of $5,800. He deposits $4,500 into a savings account which earns an
Anastaziya [24]

Answer:

4.8% of $4,500 = $216

Step-by-step explanation:

use https://www.calculator.net/percent-calculator.html?cpar1=4.8&cpar2=4500&cpar3=&ctype=1&x=112&y=12

it is a calculator for percentages i feel that this will help you out

hope this helps!

4 0
3 years ago
Evaluate teh expression. 4 + 3 × [6 ÷ (4 + 2)]2 <br> A) 7 <br> B) 8 <br> C) 9 <br> D) 12
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FOLLOW ME FOR CLEARING YOUR NEXT DOUBT

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3 years ago
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