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FrozenT [24]
3 years ago
12

You time someone completing a single task the first time at 100 minutes and the fourth time they do the task it takes 81 minutes

. You should use a 90 percent learning curve to estimate the length of time this worker will take to complete this task in the future.
Mathematics
1 answer:
kolezko [41]3 years ago
3 0

Answer:

given statement is false

Step-by-step explanation:

given data

first time = 100 minutes

fourth time  = 81 minutes

solution

as here time for 1st unit is multiply by learning percentage for obtain time for 2nd unit

so here time for 2nd unit divide by time of 1st unit so 100 is here learning curve

so \frac{81}{100} × 100 = 81 percent

but it say 90 percent learning curve

so given statement is false

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Help would be greatly appreciated
Nesterboy [21]
I believe A 5 is correct
8 0
4 years ago
Asif makes a cuboid of plasticine of sides 75cm, 35cm and 21cm. How many such cuboids will he need to form a cube?
algol [13]

Answer:

The number of cuboids that will be needed to form a cube is 2625 cuboids

Step-by-step explanation:

To form a cube, we have;

The length = The height = The depth

The dimensions of the given cuboid = Length = 75 cm, the width = 35 cm, the depth = 21 cm.

Therefore;

The lowest common multiple of 75, 35, and 21, for the cuboid is given as follows;

75 = 5 × 5 × 3

35 = 5 × 7

21 = 3 × 7

Therefore, multiplying 75 by 7, we get;

75 × 7 = 525

Since 7, 5 and 3 are factors of 525, 35 and 21, can also be factors as we check;

525/35 = 15

525/21 = 25

Therefore, the cube will be;

The length of the cube will consist of 7 pieces of the cuboid, arranged with the side 75 cm facing the front

The depth of the cuboid will be 15 cuboids with the side 35 cm facing the sides

The height of the cuboid will be 25 cuboids with the side 21 cm high

The total number of cuboids is therefore;

7 × 15 × 25 = 2625 cuboids

The number of cuboids that will be needed to form a cube = 2625 cuboids.

8 0
3 years ago
I need help someone please
Alja [10]

Answer:

easy

Step-by-step explanation:

Download txt
4 0
3 years ago
A Cat, sitting in the top of a tree, spots a dog and a Firefighter both on the flat ground below. From the cats point of view ,
dezoksy [38]
This is the concept of application of trigonometry;
The height of the tree will be given by:
tan theta=opposite/adjacent
theta=65
opposite=h
adjacent= 10
thus;
tan 65=h/10
h=10 tan 65
h=21.45 m

The distance between the dog and the man is x;
the distance of the man to the tree is (x+10) m
this will be given by:
tan 50= 21.45/(10+x)
getting the reciprocal of the expression we get;
1/tan 50=(10+x)/21.45
cross multiplying the above expression we get;
21.45=(10+x)tan 50
21.45=(10+x)1.2
21.45=12+1.2x
1.2x=21.45-12
1.2x=9.45
x=9.45/1.2
x=7.875
We conclude that the distance of the Firefighter and the dog is x=7.875 m



4 0
4 years ago
Read 2 more answers
Help meeeeee!!!!!?????
miss Akunina [59]

Answer:

Equation: 48t + 265 = 553

t = 6

Step-by-step explanation:

48t + 265 = 553

48t = 228

t = 228/48

t = 6

6 0
3 years ago
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