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lidiya [134]
2 years ago
10

If 2/15 is 40 then 1/15 is?

Mathematics
1 answer:
Stells [14]2 years ago
8 0

Answer:

20

Step-by-step explanation:

\frac{2}{15} = 40

\frac{2}{15} ÷ \frac{2}{1} = \frac{1}{15}

40 ÷ \frac{2}{1} = 20

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The distance from the Earth to the Moon is 384 000 km. Work out the time it would take a car travelling at 100 km/h to travel 38
suter [353]

Answer:

3840

Step-by-step explanation:

thbyrtjnbyj

8 0
3 years ago
The heights of women in the united states are normally distributed with a mean of 64 inches and a standard deviation of 2.75 inc
9966 [12]
According to the normal distribution curve:

<span>"the percent of women whose heights are between 64 and 69.5 inches"</span> represents the values within 2 standard deviation ,,,

And that value is 95% of the whole data



7 0
3 years ago
All about simulitious equations​
Korolek [52]

Answer:

On occasions you will come across two or more unknown quantities, and two or more equations

relating them. These are called simultaneous equations and when asked to solve them you

must find values of the unknowns which satisfy all the given equations at the same time.

Step-by-step explanation:

1. The solution of a pair of simultaneous equations

The solution of the pair of simultaneous equations

3x + 2y = 36, and 5x + 4y = 64

is x = 8 and y = 6. This is easily verified by substituting these values into the left-hand sides

to obtain the values on the right. So x = 8, y = 6 satisfy the simultaneous equations.

2. Solving a pair of simultaneous equations

There are many ways of solving simultaneous equations. Perhaps the simplest way is elimination. This is a process which involves removing or eliminating one of the unknowns to leave a

single equation which involves the other unknown. The method is best illustrated by example.

Example

Solve the simultaneous equations 3x + 2y = 36 (1)

5x + 4y = 64 (2) .

Solution

Notice that if we multiply both sides of the first equation by 2 we obtain an equivalent equation

6x + 4y = 72 (3)

Now, if equation (2) is subtracted from equation (3) the terms involving y will be eliminated:

6x + 4y = 72 − (3)

5x + 4y = 64 (2)

x + 0y = 8

5 0
3 years ago
2,500 principal earning 4% compounded quarterly after 4 years
Kay [80]
A=p(1+r/100)^n
A=2500(1+4/400)^16
A=2931.45
5 0
3 years ago
How many terms are in a^2-ab+8b+b^2-1
DanielleElmas [232]
Remember that the terms of a polynomial are the parts of the polynomial separating by addition and subtraction; in other words, the parts separated by (+) and (-) signs. Knowing this, we can separate the terms of our polynomial:
a^2-ab+8b+b^2-1
- First term: a^2
- Second term: -ab
- Third term: 8b
- Fourth term: b^2
- Fifth term: -1

We can conclude that there are 5 terms in the polynomial a^2-ab+8b+b^2-1.
8 0
3 years ago
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