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3 years ago

HELPPPPPP PLSSSSSSSSSS ASP HELPPPPPPPPPPPPPPPPPPPPPP

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

5 0

Answer:

if it helps please mark brainliest!

Step-by-step explanation:

essays= x

quizzes=y

2x=60

x=30 1 essay per 30 days

4y=40

y=10 1 quiz every 10 days

120/30=4

120/10= 12

so 4 essays and 12 quizzes in 120 days

if it helps please mark brainliest!

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COMPLEX NUMBERS AND DEMOIVRE'S THEOREM: HELP ASAP

alisha [4.7K]

Answer:

a = 0, b = -15

Step-by-step explanation:

Given two complex number Z1=3cispi and z2=5cis(pi/2)

In polar form;

z1 = 3(cospi + isinpi)

z1 = 3(-1+i0)

z1 = -3+0i

Z2 = 5(cospi/2 + isinpi/2)

Z2 = 5(0+i)

Z2 = 0+5i

Z1*Z2 = (-3+0i)(0+5i)

Z1*Z2 = 0 - 15i +0i + 0i²

Z1*Z2 = 0-15i

comparing 0-15i with a + bi;

a = 0 and b = -15

8 0

2 years ago

If the first term of the series is 30 and the 14th term is 95, what is the sum of all the terms of the series?

RideAnS [48]

Answer:

D) $S_{14} = 875$ .

Step-by-step explanation:

Given : If the first term of the series is 30 and the 14th term is 95,

To find : what is the sum of all the terms of the series.

Solution : We have given

First term = 30 .

14 th term = 95.

Sum of all term = $S_{n} =\frac{n(first\ term +\ last\ term)}{2}$ .

Here, n = 14.

$S_{14} =\frac{14(30 +95)}{2}$ .

$S_{14} =\frac{14(125)}{2}$ .

$S_{14} =\frac{1750}{2}$ .

$S_{14} = 875$ .

Therefore, D) $S_{14} = 875$ .

7 0

3 years ago

Read 2 more answers

Х2 + 2x, 3х + 5, x2 + 1, 6x - 4

professor190 [17]

Answess

Step-by-step explanation:

6 0

2 years ago

( (8 times 1.95) + (3 times 2.95) +10.95) times 1.06

deff fn [24]

The answer is 36.057

5 0

3 years ago

What's y in: 21y=(-205) +75+47y

Alenkinab [10]

The Answer Is A Fraction y= 151/47

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3 years ago

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