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Oksanka [162]
2 years ago
9

Find all solutions to the equation. (sin x)(cos x) = 0

Mathematics
1 answer:
Sindrei [870]2 years ago
6 0
Hello : 
 <span>(sin x)(cos x) = 0
sinx = 0  or cosx= 0 
all solutions in : R
1) sinx= 0  : x = k</span>π......  k<span>∈ Z
2) cosx= 0 : x= </span>π/2 + kπ ....k∈ Z
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Greek city-states began to form in 800 B.C. and in 200 A.D, Christians began getting persecuted. How many years passed between t
asambeis [7]

Answer: 1000 years

Step-by-step explanation:

-Greek city-states began to form in 800 B.C i.e 800 years Before Christ appearance

- up till 200 A.D i.e 200 years of After Christ disappearance

Hence, the number of years between the time that Greek city-states began to form and the persecution of Christians began is equal to the sum of years Greek city States started formation and Year persecution began

i.e 800 BC + 200 A.D = 1000 Years

Thus, the number of years of that passed was 1000 years

6 0
3 years ago
Question 10
kozerog [31]

The regular selling price per unit for the laptop is $298.6.

<h3>How to calculate the price?</h3>

Let the regular price per unit be x.

The expense is 19% of the selling price and profit is 25% of the selling price. This will be illustrated as:

x + (19% × x) + (25% × x) = 430

x + 0.19x + 0.25x = 440

1.44x = 430

Divide

x = 430 / 1.44

x = 298.6

The price is $298.6

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7 0
1 year ago
Which of the following represents the correct calculation of the sampling interval?
Goshia [24]

Answer:

The correct answer is

d. Sampling Interval = Population size ÷ Sample size.

Step-by-step explanation:

According to Johnstone et al., (2014) "<em>Once the auditor has determined the appropriate sample size, a sampling interval is calculated by dividing the population size by the sample size.</em>"

Thus,

Sampling Interval = Population size ÷ Sample size.

Johnstone, K., Rittenberg, L. and Gramling, A. (2014). <em>Auditing: A Risk-Based Approach to Conducting a Quality Audit.</em> Ninth Edition.

4 0
3 years ago
A length of rope is stretched between the top edge of a building and a stake in the ground. The head of the stake is at ground l
4vir4ik [10]
X - height of the tree.
A proportion is:
1/2  : x = 1 : 36
x = 36 * 1/2
x = 18
Answer. the tree is 18 feet tall.
6 0
3 years ago
Read 2 more answers
John sells apples for $5 per bunch and watermelons for $3 a piece. He made $100 today and sold 10 watermelons. How many bunches
harina [27]

Answer:

14

Step-by-step explanation:

3*10=30

5*14=70

30+70=100!!!  

4 0
2 years ago
Read 2 more answers
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