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UkoKoshka [18]
3 years ago
5

The amount of time it takes p people to paint d doors varies directly with the number of doors and inversely with the number of

Mathematics
2 answers:
Talja [164]3 years ago
4 0

Step-by-step explanation:

time ∝ number of door 1

time . ∝ 1/number of people. 2

compare equation 1 and 2

time . ∝ number of door / number of people

put k as constant

time = k number of door / number of people. 3

time =2. people=4 door = 10

putting in equation 3

2 = k (10)/(4)

2×4/10 = k

8/10 =k

4/5 =k

putting in equation 3

time= 4/5 number of door / number of people

now time =5 door= 25 people=?

5=4/5 (5)/ (number of people)

number of people =4/5 ×25/5

number of people= 4

Tatiana [17]3 years ago
4 0

Answer:

4

Step-by-step explanation:

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Find the value of x. Write it as a decimal.
makkiz [27]

Answer:

68.5

Step-by-step explanation:

Arc ABE = 360 - 2x

Arc AE = 2x

half the difference between the two arcs is 43

43 = \frac{1}{2} [360 -2x - (2x)]    

7 0
3 years ago
Two angle of a tranigle measure 55 and 20 what is the measure of the third angle
wariber [46]

Answer:

105 degrees

Step-by-step explanation:

Recall that the sum of angles in a triangle is 180 degrees. As such, where a, b and c are the angles of a triangle then

a + b + c = 180 ( all in degrees)

Given that two angles of a triangle measure 55 and 20, let the size of gthe 3rd be T then

55 + 20 + T = 180

simplify

75 + T = 180

Subtract 75 from both sides

T = 180 - 75

T = 105

7 0
3 years ago
The table shows the total profits earned from magazine sales.
coldgirl [10]

Answer:

C. y= 14x+20

Step-by-step explanation:

By looking at the table, you can put in the x-values into all of the equations until you find the corresponding y-values that matches with the values in the table. For example: y= 14(2)+ 20, y=48. y= 14(20) +20, y=300. Hope this helped!

8 0
3 years ago
Read 2 more answers
Martin was going to the market to buy apples. The price for apples is $3.50 times the number of apples bought plus one-dollar ta
boyakko [2]

A(n) = 3.50n + 1.00


Martin bought 3^3 apples or 27 apples.


Let n = 27


A(27) = 3.50(27) + 1.00


A(27) = $95.50

3 0
3 years ago
Which of these points lies on the line described by the equation below? y - 4 = -2(x - 6)
ch4aika [34]
Y - y₁ = m(x - x₁)
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   + 4          +   4
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The answer is D, (6, 4).
3 0
4 years ago
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