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coldgirl [10]
3 years ago
14

grade 8 , if the mine drum diameter is 6m, calculate how far the counterweight will lift for each single rotation of the drum us

e the formula C=2πr​
Mathematics
1 answer:
mash [69]3 years ago
7 0

Answer:

ok

Step-by-step explanation:

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Answer:

number 1 is 5x 1/2 the others I'd not know

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Which of the following is equivalent to sin theta csc(–theta) wherever sin theta csc(–theta) is defined?
Firlakuza [10]
sin\theta csc(-\theta)=sin\theta\cdot\frac{1}{sin(-\theta)}=sin\theta\cdot\frac{1}{-sin\theta}=\frac{1}{-1}=-1\\\\Answer:F
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What is the coefficient of x4 in the expansion of (3x + 1)??
bulgar [2K]
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7 0
3 years ago
43.
aleksklad [387]

Answer:

4.12 kg

Step-by-step explanation:

Regular cakes:

1 dozen normal sponge cakes: 264 g plain flour

Vegetarian cakes:

1 dozen cakes: 264 g plain flour

4 eggs are replaced by 4 * 30 g of flour = 120 g flour

total flour for 1 dozen vegetarian cakes = 264 g + 120 g = 384 g

Proportion for regular cakes:

12 cakes to 264 g flour = 100 cakes to x grams flour

12/264 = 100/x

12x = 26400

x = 2200

2200 g flour for 100 regular cakes

Proportion for vegetarian cakes:

12 cakes to 384 g flour = 60 cakes to y grams flour

12/384 = 60/y

12y = 384 * 60

12y = 23040

y = 1920

1920 g flour for 60 vegetarian cakes

Total flour needed:

2200 g + 1920 g = 4120 g

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Answer: 4.12 kg

4 0
3 years ago
On a map the perimeter of the is 0.251 meters. The actual perimeters of the park is 1,000 times as large. What is the actual per
raketka [301]

The actual perimeter of the park is \boxed{\bf251{\text{ meters}}}.

Further explanation:

Given:

The perimeter of the park is on a map 0.251{\text{ meters}}. The measured perimeter of the park is 1000 times as large.  

Calculation:

The distance of the closed figure is called as the perimeter.

The perimeter of the attached Figure 1 can be calculated as,

\begin{aligned}{\text{Perimeter}}&=a+a+b+b\\&=2\left({a+b}\right)\\\end{aligned}

Here, x,y{\text{ and }}z is the length of the shape.

From place value chart, 10 tens is equal to 1 hundreds.

Tenths are one place after the decimal and hundredths are two places after the decimal.

Two tenths can be written in the form of decimal as follows:

\dfrac{2}{{10}}=0.2

Five hundredths can be written in the form of decimal as follows:

\dfrac{5}{{100}}=0.05

One thousandths can be written in the form of decimal as follows:

\dfrac{1}{{1000}}=0.001

Therefore, the number 0.251 can be written as,

\begin{aligned}0.251&=\frac{2}{{10}}+\frac{5}{{100}}+\frac{1}{{1000}}\\&=0.2+0.05+0.001\\&=0.251\\\end{aligned}

On the map the perimeter of the park is 0.251{\text{ meters}}.

Let {\text{P}} be the actual perimeter of the park.

The actual perimeter of the park can be calculated as follows,

\begin{aligned}{\text{P}}&=0.251\times1000\\&=251{\text{ meters}}\\\end{aligned}

Thus, the actual perimeter of the park is \boxed{\bf251{\text{ meters}}}.

Learn more:

1. Learn more about problem on function brainly.com/question/1632445

2. Learn more about problem on triangle brainly.com/question/7437053

3. Learn more about problem on range and domain of functions brainly.com/question/3412497

Answer details:

Grade: Middle school

Subject: Mathematics

Chapter: Numbers

Keywords: Perimeter, park, map,  , measured, 1000 times large, distance, closed figure, length, shape, place value chart, hundreds, tenths.

6 0
3 years ago
Read 2 more answers
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