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JulijaS [17]
4 years ago
6

How to subrtact a negative from a negative?

Mathematics
2 answers:
Kamila [148]4 years ago
8 0

Here, this website explains it perfectly

Step-by-step explanation:

https://www.k5learning.com/blog/subtracting-positive-and-negative-numbers

Radda [10]4 years ago
5 0
You can subtract a negative from a negative depending on what the problem is. There are different ways to do it but they depend on what the problem is.
You might be interested in
The lengths of the legs of a right triangle are consecutive even integers. The hypotenuse is 58 inches. What is the sum of the l
miskamm [114]

Answer:

82 inches

Step-by-step explanation:

The difference between consecutive even integers is 2, thus

let the legs be n and n + 2

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

n² + (n + 2)² = 58² ← expand and simplify left side

n² + n² + 4n + 4 = 3364 ( subtract 3364 from both sides )

2n² + 4n - 3360 = 0 ( divide all terms by 2 )

n² + 2n - 1680 = 0 ← in standard form

(n + 42)(n - 40) = 0 ← in factored form

Equate each factor to zero and solve for n

n + 42 = 0 ⇒ n = - 42

n - 40 = 0 ⇒ n = 40

But n > 0 ⇒ n = 40

and n + 2 = 40 + 2 = 42

Thus sum of legs = 40 + 42 = 82 inches

3 0
3 years ago
Evaluate the function.<br> f(x) = -22 – 3x + 3<br> Find f(7)
Artemon [7]
F(7)= -22 - 3(7) + 3
f(7)= -22 - 21 +3
f(7)= -40

Hope that helps!
3 0
3 years ago
Nasir has an annual salary of 64,000 and his company pays him twice a month. What is the gross income per paycheck that Nasir re
ryzh [129]

64,000/2=32,000

32,000/12= $2,666.67 per paycheck

5 0
3 years ago
When given a quadratic equation, how do I graph it, and find the vertex?
NemiM [27]
So let’s say the equation is x^2 (x squared) -4x + 8 = 0. So you have to eventually graph a palabara. So to get the vertex, you have to find the line of symmetry (this plays a big part). So the formula for the line of symmetry is x= -b/2a. So A is this equation is 1. B is -4. C is 8. So you would plug these numbers in and you get 2. So (2,0) is your like of symmetry. Now you have to plug 2 back in for x. So when you do that you get 4 so the vertex is (2,4). So the vertex is (2, 4) and basically what the vertex is is it is the highest or lowest point of a palabara. So you can tel if it opens up or down by looking is A is negative or positive. If A is negative the it opens down. If it is positive then it opens up. So now you just put points in. Create a t chart. Like x/y. So when X is 1 for example, y is 5. So you graph (1, 5) and you graph the point that is the same distance from the line of symmetry. You do this until you have 5 points. I hope this helps. It’s hard to teach this over text.
4 0
4 years ago
What is the difference between the median and the range in the data set shown below?
Snezhnost [94]
Median is 7, two numbers in the middle is 8 and 6, 8+ 6 = 14 divided by 2 is 7.

Range is largest number minus the smallest number. Largest number is 13 and smallest number is 1. 13-1 equals 12. Range is 12.

12 - 7 = 5 answer is 5
8 0
3 years ago
Read 2 more answers
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