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2 years ago

How to convert fractions?

1 answer:

6 0

You can convert a fraction into a decimal by taking the numerator or the top number and such as 3/4 and the numerator would be 3 and divided it by the denominator 4 so the problem you set up should be 3 diveded by 4 which will give you .75

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Why can you use the constant of proportionality with any representation?

pantera1 [17]

Answer:

The number k is called the constant of proportionality. One important way of thinking about this constant k is that it tells us how much y increases by if we increase x by exactly 1. to express that y is directly proportional to x.

3 0

2 years ago

Determine the average speed of the current in a river if a boat moves at 20 miles/hour in still water and takes 3 hours to trave

Taya2010 [7]

The speed of the current in a river is 6 miles per hour

Solution:

Given that,

Speed of boat in still water = 20 miles per hour

Time taken = 3 hours

Distance downstream = 78 miles

To find: Speed of current

If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then:

Speed downstream = (u + v) km/hr

Speed upstream = (u - v) km/hr

Therefore, speed downstream is given as:

$\text{ speed downstream } = \frac{distance}{time} = \frac{78}{3}\\\\\text{ speed downstream } = 26 \text{ miles per hour }$

We know that,

Speed downstream = (u + v)

26 = 20 + v

v = 26 - 20

v = 6 miles per hour

Thus speed of the current in a river is 6 miles per hour

3 0

2 years ago

Add or subtract each expression.Simplify your final answer show all work.

Elan Coil [88]

1) 2x-1 or x=1/2
2) 5a-16 or a=16/5

8 0

3 years ago

Need help with questions 2. and 3.

emmainna [20.7K]

9514 1404 393

Answer:

2) x = 7

3) x = 5

Step-by-step explanation:

When a transversal crosses parallel lines, all of the acute angles are congruent, and all of the obtuse angles are congruent. When it crosses at right angle, all of the angles are right angles.

2) All of the angles are right angles.

11x +13 = 90

11x = 77 . . . . . . subtract 13

x = 7 . . . . . . . divide by 11

3) The two marked angles are acute.

16x = 80 . . . . the acute angles are congruent

x = 5 . . . . . . divide by 16

5 0

2 years ago

A taxi driver charges a fixed rate of $2 and he charges $19.50 for a 7-mile trip

KiRa [710]

You will pay $2.78 per mile for a total of 7 miles you will pay $19.50, but you must remember the taxi driver charges a $2.00 fixed rate so your final total will be $21.50

7 0

3 years ago