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FinnZ [79.3K]
3 years ago
6

What is 8+[4+(-9)] ?

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

Answer:

Positive 3

Step-by-step explanation:

you have to add 4 and -9 first and you get -5 then you add that to positive 8 and get 3

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Let A = {1, 2, 3, 4, 5} and B = {2, 4}. What is A ∩ B? (1 point)
katen-ka-za [31]

Answer:

{2, 4}.

Step-by-step explanation:

A = {1, 2, 3, 4, 5} and B = {2, 4}.

A ∩ B?

This means intersection or what is in common

A ∩ B =  {2, 4}.

8 0
3 years ago
A compter costs 1,000 and decreases to 725 how much did it decreas??
notka56 [123]

Answer:

275

Step-by-step explanation:

1000-725=275

4 0
3 years ago
A dial combination lock has dials numbered 0 to 5. The lock is set to an even number. How many different numbers could it be?
Butoxors [25]

The number of combinations will be 6 for even numbers.

<h3>What is the combination?</h3>

The arrangement of the different things or numbers in a number of ways is called the combination.

Given that:-

  • A dial combination lock has dials numbered 0 to 5. The lock is set to an even number. How many different numbers could it be?

The total sample numbers are from 0 to 5 which are 0,1,2,3,4,5.

The even numbers are 0,2,4.

The combinations will be given by:-

C = 3!

C = 3 x 2 x1

C = 6

Therefore the number of combinations will be 6 for even numbers.

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3 0
2 years ago
Which is likely to have a mass close to 700 grams?
oksano4ka [1.4K]

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D

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
X^2 - 10x + 13 = 0<br><br> Solve quadratic equation<br> In simplest form
Salsk061 [2.6K]

Answer:

5 \pm 2\sqrt{3}

Step-by-step explanation:

A quadratic equation in the form

ax^2+bx+c=0

Can be solved by using the formula

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

In this problem, the equation is

x^2-10x+13=0

So, we have

a = 1

b = -10

c = +13

Using the equation above, we find:

x=\frac{-(-10)\pm \sqrt{(-10)^2-4(1)(13)}}{2(1)}=\frac{10 \pm \sqrt{48}}{2}=\frac{10 \pm 4\sqrt{3}}{2}= 5 \pm 2\sqrt{3}

8 0
3 years ago
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