4 years ago

Subtracting a positive and adding a negative number are completely different operations. T/F?

Mathematics

1 answer:

bezimeni [28]4 years ago

6 0

Here's how you can solve this question yourself:

$4 - 2 = 2$

$-4 + -2 = -6$

So, the answer would be "false" or the second option. As you can see from the examples above they're not the same one equals a negative one equals a positive.

Hope this helps.

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In a class, there are 15 students. 8 of them like playing soccer, 6 of them like swimming, and 2 like both and swimming and play

Katena32 [7]

I think 3
There are 15 students
-8 like soccer
-6 like swimming
-2 like both
Well if there are 8 that like soccer and 6 that like swimming and 2 like both subtract 2 from the six because they like both they are counted twice
Add 8+4=12
15-12=3
So I think 3 out of the 15 kids don’t like either

3 0

4 years ago

Given the figure below, find the values of x and z

rosijanka [135]

Vertical angles equal each other so (13x-85) = 97
we can solve for x:

13x-85 = 97
add 85 to each side:
13x = 182
divide both sides by 13

x = 182 / 13
x = 14

z and 97 are supplementary angles and need to equal 180 degrees

z = 180 - 97 = 83

6 0

3 years ago

In a test consisting of 12 questions, each student gets a score of +23 for every correct answer and −13 for every incorrect answ

pentagon [3]

Answer:

96 scores

Step-by-step explanation:

Score for each correct answer = +23

Score for each incorrect answer = $-13$