3 years ago

Probably really annoying well please please please please please please help me

Mathematics

1 answer:

Elodia [21]3 years ago

8 0

Answer:

What are the top 2 angle measures? i need it to answer.

a=80 (assuming the other 2 angle in that triangle are 55 and 45)

b=80 adjacent angles are equal

c=48

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A ladder leans against the side of a house. The angle of elevation of the ladder is 66 degrees when the bottom of the ladder is

Ierofanga [76]

Answer:

The length of the ladder = 6.5077 ft

Step-by-step explanation:

Given A ladder leans against the side of a house

Given the angle of elevation of the ladder is 66° when the bottom of the ladder is 16 ft from the side of the house

Let 'C' be the point of observation.

Given CA= 16 ft

From right angle triangle

$cos C = \frac{CB}{CA}$

$cos 66 = \frac{x}{16}$

x = 16 × cos 66°

x = 16 × 0.4067

x = 6.5077

x = 6.5 ft

The length of the ladder = 6.5 ft

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4 years ago

A colony of ants has 50,000 members. Sione thinks the colony will grow at a rate of 3.1% each hour. How many ants should he expe

Lubov Fominskaja [6]

3.1% of 50,000 is 1,550 if I were to multiply that by 10 that would equal 15,500 add that to 50,000 it equals 65,500

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3 years ago

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Find the limit, if it exists. (if an answer does not exist, enter dne.) lim (x, y) → (0, 0) x4 − 20y2 x2 + 10y2

Firdavs [7]

Traveling along the x-axis, we have

$\displaystyle\lim_{(x,y)\to(0,0)}\frac{x^4-20y^2}{x^2+10y^2}=\lim_{x\to0}\frac{x^4}{x^2}=\lim_{x\to0}x^2=0$

On the other hand, along the y-axis we get

$\displaystyle\lim_{(x,y)\to(0,0)}\frac{x^4-20y^2}{x^2+10y^2}=\lim_{y\to0}\frac{-20y^2}{10y^2}=\lim_{y\to0}(-2)=-2$

Therefore the limit doesn't exist.

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3 years ago

In a population distribution, a score of x= 28 corresponds to z= -1 and a score of X =34 corresponds to z= -0.50. Find the mean

katovenus [111]

Z = (X - mean)/sd
-1 = (28 - mean)/sd
mean - sd = 28 . . . (1)
-0.5 = (34 - mean)/sd
mean - 0.5sd = 34 . . . (2)

(1) - (2) => -0.5sd = -6
sd = -6/-0.5 = 12
From (1), mean = sd + 28 = 12 + 28 = 40

mean = 40
standard deviation = 12

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3 years ago

Find the perimeter. Use 3.14 for pi.

77julia77 [94]

3.14 the perimeter is the 4 in 3.14

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