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3 years ago

PLZ HELP WILL MARK BRANLIEST (No dum answers or I will delete your question - seriously don't be annoying)

Mathematics

1 answer:

Vsevolod [243]3 years ago

4 0

Answer:

A. tan(2π/3) = $-\sqrt{3}$

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Item 12 Seven out of every 8 students surveyed owns a bike. The difference between the number of students who own a bike and tho

AysviL [449]

so for this equation, I would do 7/8 = 72/x
1 72
- = -
8 x

Cross multiply to get 72 * 8 = 1x
solve for X 576 = x

8 0

3 years ago

An elliptical culvert is 3.5 feet tall and 6 feet wide. It is filled with water to a depth of 0.95 feet. Find the width of the s

maks197457 [2]

Answer:

$W_s \approx5.3$

Step-by-step explanation:

From the question we are told that

Height $H=3.5ft$

Weight $W= 6ft$

Depth $D=0.95ft$

Generally the equation for ellipses is given as

$\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

Where

$b=H/2\\b=3.5/2\\Therefore\\b=1.75\\a=W/2\\a=6/2\\Therefore\\a=3\\$

$\frac{x^2}{3^2} +\frac{y^2}{1.75^2} =1$

Generally to find y in the equation $\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

$y=-b+d$

$y=-1.75+0.95$

$y=-0.8$

Therefore

$\frac{x^2}{3^2} +\frac{(0.8)^2}{1.75^2} =1$

$\frac{x^2}{3^2} =1-\frac{(0.8)^2}{1.75^2}$

$\frac{x^2}{3^2} =1-0.2089795918$

$X^2 =3^2(1-0.2089795918)$

$X^2 =7.119183674$

$X =\sqrt{7.119183674}$

$X =2.66817984$

Therefore the width of the given stream is

$W_s=2.66817984*2$

$W_s=5.33635968$

$W_s \approx5.3$

3 0

3 years ago

Which of the following has the lower unit rate?<br><br> $$$$$$$$$$$$$$$$$$$$

olga55 [171]

Answer:

Options?

Step-by-step explanation:

7 0

3 years ago

(x + 4) mm <br> What is the value of x according to this picture?

irinina [24]

Answer:

x = 24

Step-by-step explanation:

The angle bisector creates proportional corresponding line segments on either side of it. That is ...

(35 mm)/(56 mm) = (x +4) mm/(44.8 mm)

Multiplying by 44.8, you have

44.8 · (35/56) = x + 4

28 = x + 4 simplify

24 = x subtract 4

8 0

3 years ago

Someone please help me answer this!!

marin [14]

Answer:

c = 85 in is the answer.

Step-by-step explanation:

a = 36 in

b = 77 in

c = ?

According to the Pythagoras theorem,

a² + b² = c²

36² + 77² = c²

1296 + 5929 = c²

7225 = c²

c = 85 in

∴ c = 85 in is the length of the missing leg.

7 0

3 years ago

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