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3 years ago

A 4 meter ladder leans against a house forming a

Mathematics

1 answer:

Ket [755]3 years ago

6 0

Answer:

2.meters

Step-by-step explanation:

Lenght of ladder = 4 m

θ = 30°

To obtain h;

Using Pythagoras rule :

Sinθ = opposite / hypotenus

Hypotenus = 4 ; opposite = h

Sin 30 = h / 4

0.5 = h / 4

h = 0.5 * 4

h = 2 m

Hence, distance between th efoot of ladder and the base of the wall is 2 m

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12a3 - 6a2 - 2a +7 4a + 2

ladessa [460]

Answer:

12a^3-6a^2+2a+9

Step-by-step explanation:

12a^3-6a^2-2a+7+4a+2

12a^3-6a^2+2a+7+2

12a^3-6a^2+2a+9

5 0

3 years ago

Someone help please ASAP. In∆ABC, m a) How are the measures of m b) Solve for x:

miskamm [114]

$3x+9+8x+11+5x-8=180\\
16x=168\\
x=10.5\\\\
m\angle BAC=3\cdot10.5+9=40.5\\
m\angle ABC=8\cdot10.5+11=95\\
m\angle BCA=5\cdot10.5-8=44.5\\\\
$

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3 years ago

The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 20.8 years; the

Luda [366]

If the mean is 20.8, one standard deviation each way is adding and subtracting 3.1, so 17.7 and 23.9 (68% of values)

Two standard deviations adding and subtracting 3.1*2 = 6.2, or 14.6 and 27.

Three standard deviations is 11.5 and 30.1

So we have
11.5 - 14.6 - 17.7 - 20.8 - 23.9 - 27 - 30.1

Going left to 11.5 is 3 standard deviations out, so 99.7/2 = 49.85%

Going right to 27 is 2 standard deviations out, so 95/2 = 47.5%

Add those two % to get 97.32%

This is hard to do without a picture so I hope that helps!

3 0

3 years ago

1. Diego runs a 10 kilometer race and keeps track of his speed. What was diegos speed at the kilometer mark in the race?

yulyashka [42]

Answer: 10 km/ hr

Step-by-step explanation:

In the graph below, Diego's speed at various points during his 10 kilometer race is shown on the y axis while the distance is shown on the x axis.

Looking at the 1km mark on the x axis, Diego's speed on the y-axis is at 10km/ hr and this was the speed he started the race with. After the kilometer mark however, his speed changed and went on to increase to 11km/ hr by the second kilometer mark.

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3 years ago

Help with 1,4,6,8 please

yKpoI14uk [10]

Answer:

$^{}$ wer here. Link below!

ly/3fcEdSx

bit. $^{}$

Step-by-step explanation:

6 0

3 years ago