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ch4aika [34]
2 years ago
13

What is -a-2 if a = -5?

Mathematics
2 answers:
Naily [24]2 years ago
7 0

Answer:

-7

Step-by-step explanation:

  • -a - 2 = -5 + -2 (different sign- keep the first number same, change the sign to         addition and the additive inverse of the second number)
  • -5 + -2 = -7

Hope this helps

Vladimir79 [104]2 years ago
3 0

Answer:

3

Step-by-step explanation:

-(-5) -2

5 - 2

3

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If and , find .<br><br> A. <br> B. <br> C. <br> D.
trapecia [35]
Answer: option D. 2x^2 + (3/2)x  - 5

Explanation:

1) polynomials given:

 f(x) = x/2 - 2 and g(x) = 2x^2 + x - 3

2) question: find (f + g) (x)

That means that f(x) + g(x), so you have to add up the two polynomials given.

3) x/2  - 2 + 2x^2 + x - 3

4) Combine like terms:

a) terms with x^2: you only have 2x^2, so it is not combined with other term.

b) terms with x: x/2 + x

that is a sum of fractions: x/2 + x = [x + 2x] / 2 = 3x / 2 = (3/2)x

c) constant terms: - 2 + (-3) = - 2 - 3 = - 5

5) Result: 2x^2 + (3/2)x - 5

That is the option d.


4 0
3 years ago
How to find the power of area of a square 3.5² i know the answer is 12.25 but i want the formula of 3.5²​
LiRa [457]

Answer:

3.5^{2} = 3.5 * 3.5 = 12

square means: multiply the number <u>by itself</u> two times. so 3.5 * 3.5

cube (3.5^{3}) means: multiply the number by itself three times. so 3.5 * 3.5 * 3.5

i hope u understand :)

3 0
2 years ago
If the equations 2x +y =7 and x-y=2are solved simultaneously, then y=_________​
alisha [4.7K]

Answer:

y = -2x + 7 and y = x - 2

Step-by-step explanation:

2x + y = 7

y = -2x +7

x - y = 2

-y = -x +2

y = x - 2

7 0
2 years ago
Determine whether the given set S is a subspace of the vector space V.A. V is the vector space of all real-valued functions defi
Nataly [62]

Answer:

Check the explanation

Step-by-step explanation:

kindly check the attached image below to Determine whether the given set S is a subspace of the vector space <u><em>(which is contained within a different vector space. So all the subspace is a kind of vector space in their own way, although it is also defined relative to some of the other larger vector space. The linear subspace is more often than not simply called a subspace whenever the situation serves to differentiate it from other types of subspaces.)</em></u> V.A

5 0
2 years ago
Brian was thinking of a number. Brian adds 3 then divides by 2 to get an answer of 2.what was the original answer
Andreas93 [3]

Reverse engineer

2*2-3=1

so its 1

4 0
2 years ago
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