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3 years ago

3 people can build a shed in 8 hours how long would it take 5 people

Mathematics

1 answer:

harkovskaia [24]3 years ago

8 0

Answer:

3howers

Step-by-step explanation:

Step-by-step exaplanation

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The average temperature in Antarctica is about -50°C. Which of the following best describes -50°C?

enot [183]

Answer:

Step-by-step explanation:

50°C below freezing point of water

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3 years ago

Frank ordered playoff tickets for himself and three friends. There is a $7 service fee per ticket and an additional shipping cos

stepan [7]

Y = 7x + 12.....x = number of tickets and y = total cost

and there are 4 tickets ordered (Frank and 3 friends)...so x = 4

y = 7(4) + 12
y = 28 + 12
y = 40 <=== so he paid 40 bucks for them

6 0

4 years ago

*An isosceles trapezoid ABCD has bases AD = 17cm, BC = 5cm, and leg AB = 10 cm. A line is drawn through vertex B so that it bise

Snowcat [4.5K]

Asked and answered elsewhere.
brainly.com/question/9635743

5 0

4 years ago

Read 2 more answers

Please help the question is in the picture I linked to the question

il63 [147K]

Answer:

$\frac{10a+300}{200}$

Step-by-step explanation:

1. take 10 times a and get 10a and put in the numerator spot of your answer

2. then do 15 times 20 which is 300 so add 300 to 10a in the numerator spot of your answer

3. multiple 20 times 10 which is 200 and make it your denominator of your answer

This method is called the butterfly method

8 0

3 years ago

Solve using law of sines or law of cosines!

malfutka [58]

Answer:

Part 5) The length of the ski lift is $1.15\ miles$

Part 6) The height of the tree is 18.12 m

Step-by-step explanation:

Part 5)

Let

A -----> Beginning of the ski lift

B -----> Top of the mountain

C -----> Base of mountain

we have

$b=0.75\ miles$

$A=20\°$

$C=180\°-50\°=130\°$ ----> by supplementary angles

Find the measure of angle B

Remember that the sum of the interior angles must be equal to 180 degrees

$B=180\°-A-C$

substitute

$B=180\°-20\°-130\°=30\°$

Applying the law of sines

$\frac{b}{sin(B)}=\frac{c}{sin(C)}$

substitute

$\frac{0.75}{sin(30\°)}=\frac{c}{sin(130\°)}$

$c=\frac{0.75}{sin(30\°)}(sin(130\°))$

$c=1.15\ miles$

Par 6)

see the attached figure with letters to better understand the problem

Applying the law of sines in the right triangle BDC

In the right triangle BDC 20 degrees is the complement of 70 degrees

$\frac{BC}{sin(70\°)}=\frac{x}{sin(20\°)}$

$BC=(sin(70\°))\frac{x}{sin(20\°)}$ -----> equation A

Applying the law of sines in the right triangle ABC

In the right triangle ABC 50 degrees is the complement of 40 degrees

$\frac{BC}{sin(40\°)}=\frac{x+15}{sin(50\°)}$

$BC=(sin(40\°))\frac{x+15}{sin(50\°)}$ -----> equation B

Equate equation A and equation B and solve for x

$(sin(70\°))\frac{x}{sin(20\°)}=(sin(40\°))\frac{x+15}{sin(50\°)}\\\\2.7475x=0.8391(x+15)\\\\2.7475x=0.8391x+12.5865\\\\2.7475x-0.8391x=12.5865\\\\x=6.60\ m$

Find the value of BC

$BC=(sin(70\°))\frac{6.6}{sin(20\°)}$

$BC=18.12\ m$

therefore

The height of the tree is 18.12 m

5 0

4 years ago