All categories

3 years ago

A ramp AB, 4 metres long, is attached to the back of a lorry at a point, B 1.2 metres above the ground.

Mathematics

1 answer:

fomenos3 years ago

4 0

Answer:

AC=

$2 \sqrt{91 } \div 5$

The angle the ramp makes with the ground is approx. 17.4576

Step-by-step explanation:

see picture above

You might be interested in

According to the scale on a road map, 3 cm represents 45 kilometers. if two cities measure 10 cm apart on the map, how many kilo

denpristay [2]

150 Km.

Good luck! :)

4 0

3 years ago

If the population of a country increases at a rate of 1.5% annually and it's current population is 430000 how many years will it

aliina [53]

The his makes no sense to me sorry just trying to get points 1.5

5 0

3 years ago

A researcher obtained M = 27 for a sample of n = 36 scores selected from a population with µ = 30 and σ = 18. This sample mean c

dusya [7]

Answer:

True

Step-by-step explanation:

Given that:

M = 27, sample of n = 36 scores, µ = 30 and σ = 18.

The z score is used in statistics to determine by how many standard deviations the raw score is above or below the mean. If the z score is positive, the raw score is greater than the mean and if the z score is negative the raw score is less than the mean. The z score is given as:

$z=\frac{x-\mu}{\sigma}$

Given that M = 27, this means that x = 27. Therefore:

$z=\frac{x-\mu}{\sigma}\\\\for \ a\ sample\ size(n):z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\z=\frac{27-30}{18/\sqrt{36} } =\frac{-3}{3}=-1$

This sample mean corresponds to a z-score of z = –1.00.

7 0

3 years ago

A company makes wax candles shaped like rectangular prisms. Each candle is 4 cm long, 3 cm wide, and 10 cm tall. If the company

MatroZZZ [7]

Answer:

Step-by-step explanation:

You can solve this problem by finding the volume of the candle first. The formula for rectangular prism is multiplying all three of its dimension. In this case, you would multiply 3, 10, and 4 together to get 120 cm^3. Assuming the question meant "the company used 4080 cm^3 of wax", divide 4080 by 120 to see the number of candles the company made, which is 34.

6 0

3 years ago

Area of composite shapes!!

Sidana [21]

Answer:

Step-by-step explanation:

hope it help

4 0

3 years ago