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Snowcat [4.5K]
3 years ago
15

6 . The scale of a map is 1: 250 000. (a) The actual distance between two cities is 80 km. Calculate this distance on the map. G

ive your answer in centimeters. (b) On the map a large forest has an area of 6 cm?. Calculate the actual area of the forest. Give your answer in Square kilometres. ​
Mathematics
1 answer:
Airida [17]3 years ago
6 0

Answer:

The scale of a map is 1:250000.The actual distance between two cities is 80 km. Calculate this distance on the map. Give your answer in centimetre

Step-by-step explanation:

1 m = 100 cm

1 km = 1000 m = 100 000 cm

1:250 000 mean that 1 cm on the map represents an actual distance of 250 000 cm = 2.5 km

1:250 000 = 2.5 km / cm

80 km / 2.5 km / cm = 32 cm

OR

80 km = 8 000 000 cm

8 000 000 cm ∙ 1 / 250 000 = 8 000 000 cm / 250 000 = 32 cm

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Since it is a fraction, it is NOT irrational (which means "not rational" or "not a fraction).

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5 0
3 years ago
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Find the break - even points for company X, which sells all it produces, if the variable cost per unit is $3, fixed costs are $2
ohaa [14]

Given:

The variable cost per unit is $3, fixed costs are $2.

The revenue function is:

Y_{TR}=5\sqrt{q}

where q is the number of thousands of units of output produced.

To find:

The break - even points for company X.

Solution:

The variable cost per unit is $3, fixed costs are $2.

So, the cost function is:

Total cost = Fixed cost + Variable cost × Quantity

Y_{TC}=2+3q

The revenue function is:

Y_{TR}=5\sqrt{q}

At break - even points the profit is zero. It means the cost and revenue are equal.

Y_{TC}=Y_{TR}

2+3q=5\sqrt{q}

Squaring both sides, we get

(2+3q)^2=(5\sqrt{q})^2

2^2+2(2)(3q)+(3q)^2=25q

4+12q+9q^2-25q=0

4-13q+9q^2=0

Splitting the middle term, we get

4-4q-9q+9q^2=0

4(1-q)-9q(1+q)=0

(4-9q)(1-q)=0

Using zero product property, we get

4-9q=0 and 1-q=0

q=\dfrac{4}{9} and q=1

q\approx 0.444 and q=1

Therefore, the break even points are 0.444 and 1.

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3 years ago
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Mazyrski [523]

Answer:

the older sister is 27 and the younger is 25.

Step-by-step explanation:

C+2=Y

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2C+2=52

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insens350 [35]

Answer:

-2.03, 2.03

Step-by-step explanation:

The degree of freedom (df) ;

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