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Amanda [17]
3 years ago
10

What is 4km-280m equal to

Mathematics
1 answer:
satela [25.4K]3 years ago
8 0
4km - 280km = -276km
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K=m-n÷y (make y the subject)​
Mkey [24]

Answer:

y = \frac{n}{K - m}

Step-by-step explanation:

When doing problems like these, you should go through the process like using PEMDAS:

P - Parenthesis ()

E - Exponents x^{2}

M - Multiply x

D - Division ÷

A - Addition +

S - Subtraction -

1) Since there aren't any Parentheses, or exponents, we should then check for any use of Multiplication.

As shown, there are no shown methods of multiplying.

BUT there is Division, so we will do the opposite of division, which is multiplication.

K = m - n ÷ y

y(K = m - n ÷ y)y

^ Trying to multiply 'y' onto both sides, because when you do something to one side, you do to the other. ^

'y' then cancels out on one side, so you will be left with:

= m - n

But on the other side you will have:

Ky

So your problem will look like:

Ky = m - n

2) Since we are trying to get 'y' by itself, instead of multiplying now, we will be dividing, because:

K(y) = Ky  or you can also say K x y = Ky

Back to the problem, we will now divide 'K' to both sides, as stated before:

What you do to one side, you do to the other:

\frac{Ky}{K} = \frac{m - n}{K}

'K' will cancel out on one side:

\frac{Ky}{K} = y

Leaving you with:

'y'

While the other side, will be left as:

\frac{m - n}{K}

So your final answer will be:

y=\frac{m - n}{K}

7 0
3 years ago
Please help me find the missing angle
alexgriva [62]

Answer:

64

Step-by-step explanation:

7 0
3 years ago
Solve: 4x-4=2(×-1)-4y+2y. show some work please:))​
Papessa [141]

your answer is x = -7+1/2

7 0
3 years ago
100POINTS!!!! PLEASE HELP EXPLAIN YOUR ANSWER!!! BRAINLIEST!!!
Nitella [24]

Example: Does the point (5, 2) lie within the solution set of the given system of inequalities?

y ≤ x − 5

y ≥ −x − 4

Focus on the first inequality. Does (5,2) satisfy this inequality? Is 2 ≤ 5 - 0 true? Yes, it is true. Before we call (5,2) a solution, we must determine whether or not (5,2) also satisfies the 2nd inequality: Is 2 ≥ -(5) - 4 true?

Is 2 ≥ -9? Yes! So, yes, (5,2) is a solution of this system of inequalities.

We must check out the other three possible solutions in the same fashion.


Try out the point (5,-2). Does it satisfy both inequalities?

Focusing on the first inequality: Is -2 ≤ 5 - 5 true? Yes, it is. The key question here and now is whether or not (5,-2) also satisfies y ≥ −x − 4. Is

-2 ≥ -(5) - 4 true? Is -2 ≥ -9 true? Yes. Thus, (5,-2) satisfies both inequalities and is thus another solution.

Check out (-5,2) and (-5,-2) in precisely the same way. Is either one, or are both, a solution (or solutions) to the given set of inequalities?

6 0
3 years ago
Read 2 more answers
Verify each identity:<br> (tanx+tany)/(1-tanxtany)=(sinxcosy+cosxsiny)/(cosxcosy-sinxsiny),
Lapatulllka [165]
Solution:
(tanx + tany)/(1-tanxtany) is equal to the formula of  tan(x+y) 
sinxcosy + cosxsiny =  is equal to the formula of sin(x+y)formula 
cosxcosy - sinxsiny) = is equal to the formula of cos(x+y) 

So this means that
 tan(x+y) = sin(x+y)/cos(x+y)
8 0
3 years ago
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