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3 years ago

When do you hear/use imperial measures in Canada?

Mathematics

1 answer:

castortr0y [4]3 years ago

5 0

Answer:

Canadians typically use a mix of metric and imperial measurements in their daily lives. Although Canadian driver's licences give height in centimetres, many Canadians also use imperial units to indicate height and weight.

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From a full 50-liter container of a 40% concentration of acid, x liters are removed and replaced with 100% acid. (A) Write the a

never [62]

Answer:

A) 20+0.6 $x$

B) range is [0, 50] (i.e. both inclusive)

C) 8.33 litres

Step-by-step explanation:

Given that concentration of acid in 50 litre container is 40%.

Amount of acid in the container = 40% of 50 litres

Amount of acid in the container = $\frac{40}{100} \times 50 = 20\ litre$

$x$ litres are removed.

Amount of acid removed = 40% of $x$ litre.

Now, remaining acid in the container = (20 - 40% of $x$ ) litre

Now, replaced with 100% acid.

So, final acid in the container = (20 - 40% of $x$ + 100% of $x$ ) litre

Amount of acid in the final mixture:

$20 - \dfrac{40}{100} \times x + \dfrac{100}{100} \times x\\\Rightarrow 20 +\dfrac{100-40}{100}x\\\Rightarrow 20 +\dfrac{60}{100}x$

Answer A) Amount of acid in the final mixture = 20+0.6 $x$

Answer B) $x$ can not be greater than 50 litres (initial volume of container) and can not be lesser than 0 litres.

so, range is [0, 50] (i.e. both inclusive)

Answer C)

Given that final mixture is 50% acid.

amount of acid = 50% of 50 litres = 25 litres

Using the equation:

$20+0.6x =25\\\Rightarrow 0.6x =5\\\Rightarrow \bold{x =8.33\ litres}$

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3 years ago

Two consecutive whole numbers the square root of 76 lies between

Bas_tet [7]

8^2 = 64
9^2 = 81

Therefor the square root of 76 will lie somewhere between 8 and 9

7 0

4 years ago

What is 0.9 percent of 54

alexdok [17]

0.486 is the answer can you please give me brainiest answer

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3 years ago

A convertible is traveling at 45 miles per hour, and its wheels have a diameter of 48 inches. How many complete revolutions do t

Angelina_Jolie [31]

Answer: The wheel make 315 complete revolutions in one minute

Step-by-step explanation: Given speed of convertible =45 miles/hr

To answer this question you will need to know how many inches the car travels Per minute.

1. To find this out you will first divide 45 miles by 60 to get the number of miles per minute.

The convertible travels 0.75 mi./min.

2. Next you will convert this number of miles to inches.

There are 63,360 inches per mile.

0.75 x 63360 = 47520 inches per minute.

3. You then need to find the distance the wheel travels in one rotation. You will need to find the circumference of the wheel.

C = pi x d

3.14 x 48

C = 150.72 inches

Each rotation is about 150.72 inches.

4. Finally, divide the total distance traveled in a minute by the circumference(distance of one rotation) to get the total number of rotations in a minute.

47520/150.72 is about 315.3 rotations per minute.

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3 years ago

Stats, Practice Test 5-6 ) There is a class with 6 women and 12 men. a) If I randomly pick 5 students, with replacement. What is

vivado [14]

Step 1: Problem

There is a class with 6 women and 12 men. a) If I randomly pick 5 students, with replacement. What is the probability that at least 4 of them will be man? b) If I randomly pick 6 students, what is the probability that at least one of them will be a man?

Step 2: Concept

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1 year ago