2 years ago

If you are given multiple choice question test, what is the odds of guessing wrong?

Mathematics

2 answers:

otez555 [7]2 years ago

6 0

If there are four choices it is 3/4

olga55 [171]2 years ago

4 0

Ussally the are four answers to a question and i u guess one you will have a 75% of gussing it wrong.

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Simplify the following expression:<br> Sqrt (-16) + sqrt(-25+5)

Studentka2010 [4]

Answer:

(4 + 2√5) i

Step-by-step explanation:

√(-16) + √(-25 + 5)

√(-16) + √(-20)

4i + 2i√5

(4 + 2√5) i

7 0

2 years ago

Is (-a + b)² = a² - 2ab + b² right or wrong, and why?

antiseptic1488 [7]

Answer:

$\huge\boxed{\sf Right.}$

Step-by-step explanation:

$(-a+b)^2$

Let's apply the formula (x+y)² = x² + 2xy + y²

Here, x = -a and y = b

So,

= (-a)² + 2(-a)(b) + (b)²

= a² - 2ab + b²

Hence, it has been proved that (-a + b)² = a² - 2ab + b².

$\rule[225]{225}{2}$

Hope this helped!

6 0

2 years ago

Help plz, just give me the points on the graph thanksss <33

Kryger [21]

Very simple, we don’t know the units on the graph but I can tell you it will be linear until when it breaks the rule and goes .2 grams one year

4 0

2 years ago

Alexander is ridiang his bime to school, after one mile, he is a third of the way there. how much farther does he have to ride?

lisov135 [29]

He has to ride 2 more miles

6 0

2 years ago

4{3sqaured+4(116-8(2×8))} I need to know ASAP it 9:30 where I live pls hwlp

inysia [295]

Start with 8*2=16
116-8= 108
108(16)=1728
3^2+4=13 13(1728)=22464
4(22464)=89856
The answer is 89,856

3 0

2 years ago