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2 years ago

Pls HELP WITH THESE TWO QUESTIONS NO LINKS

Mathematics

2 answers:

Marta_Voda [28]2 years ago

7 0

Answer:

The answer to the first question is B.

The answer to the second question is C.

Amanda [17]2 years ago

4 0

Answer:

3: B or 1/4

4: C or 15%

Step-by-step explanation:

3: There are 8 letters in Geometry and 2 E's in the word so it would be 2/8, but then you would simplify it and you will get 1/4.

4: 0.85 in a percentage is 85%. So 85% that WILL rain.

100 - 85 = 15, thus there is a 15% probability it will NOT rain.

Hope that helps :)

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3 years ago

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2 years ago

Can someone please help me please

qwelly [4]

Answer:

$1) \dfrac{12+\sqrt{-16}}{4}=\dfrac{12+\sqrt{16i^{2}}}{4}\\\\\\=\dfrac{12+4i}{4}=\dfrac{12}{4}+\dfrac{4i}{4}\\\\\\= 3 + i$

Real part = 3 & imaginary part = 1

2) 4 + 7i - 8 = 4 -8 + 7i

= -4 + 7i

Real part = -4 & imaginary part = 7

$3)\dfrac{\sqrt{9}+\sqrt{-4}}{5}=\dfrac{3+\sqrt{4i^{2}}}{5}\\\\\\=\dfrac{3}{5}+\dfrac{2i}{5}\\\\\\Real \ part = \dfrac{3}{5} \ & \ imaginary \ part = \dfrac{2}{5}$

$4) -2-\sqrt{-25}=-2-\sqrt{25i^{2}}=-2-5i$

Real part = -2 & imaginary part = -5

$5)\dfrac{15-13i}{3}=\dfrac{15}{3}-\dfrac{13i}{3}\\\\\\Real \ part = \dfrac{15}{3} \ & \ imaginary \ part = \dfrac{-13}{3}$

b) 1) 6 + 4i

2) -12+ 5i

3) 5-14i

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2 years ago