MATHEMATICS HIGH SCHOOL

Decrease 40 by 12.5%

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

Multiply 40 by 0.125 (12.5%) and you get 5

Subtract 5 from 40

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I have a Triangle and I need to find the side BC?

Answers

Looking at this problem in the book, I'm guessing that you've been
introduced to a little bit of trigonometry. Or at least you've seen the
definitions of the trig functions of angles.

Do you remember the definition of either the sine or the cosine of an angle ?

In a right triangle, the sine of an acute angle is (opposite side) / (hypotenuse),
and the cosine of an acute angle is (adjacent side) / (hypotenuse).

Maybe you could use one of these to solve this problem, but first you'd need to
make sure that this is a right triangle.

Let's see . . . all three angles in any triangle always add up to 180 degrees.
We know two of the angles in this triangle ... 39 and 51 degrees.
How many degrees are left over for the third angle ?
180 - (39 + 51) = 180 - (90) = 90 degrees for the third angle.
It's a right triangle ! yay ! We can use sine or cosine if we want to.

Let's use the 51° angle.
The cosine of any angle is (adjacent side) / (hypotenuse) .
'BC' is the side adjacent to the 51° angle in the picture,
and the hypotenuse is 27 .

cosine(51°) = (side BC) / 27

Multiply each side of that equation by 27 :

Side-BC = (27) times cosine(51°)

Look up the cosine of 51° in a book or on your calculator.

Cosine(51°) = 0.62932 (rounded)

Side BC = (27) x (0.62932) = 16.992 (rounded)
============================================

You could just as easily have used the sine of 39° .
That would be (opposite side) / (hypotenuse) ... also (side-BC) / 27 .

Please help me please

Answers

Answer:

Step-by-step explanation:

its number 2

X^a+b/x^2a. x^b+c/x^2b. xc+a/x^2c

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Answer:

See the image for the answer... Hope this helps!

What is the ratio 7 to 12 as a fraction in simplest form?

Answers

The ratio 7 to 12 is 7/12 as a fraction in simplest form.

What are ratio and proportion?

A ratio is a comparison between two similar quantities in simplest form.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

Given, Are two fractions 7 and 12.

We know we can write a : b as a fraction a/b.

Therefore, The ratio of 7 to 12 is 7 : 12 which can be written as a fraction in 7/12.

learn more about proportion here :

brainly.com/question/7096655

#SPJ2

The ratio 7 to 12 is written as 7/12 as a fraction in its simplest form. It is not possible to simplify this fraction any further because 7 and 12 have no common factors.

Does anybody know the answer to this question please I need help?!

Answers

Answer:

Juan earns 10 dollars a week at his job

Step-by-step explanation:

What is 4-6h-8h=60 answer

Answers

First you can subtract 6h-8h =-2h
4-2h=60
-4-2h=-4
------------
2h=56
Now divide and you get 56/2 =28

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Help me please:)....

Simplify 2 over squareroot 5