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Rama09 [41]
3 years ago
12

(3 + 4i) - (8 -5i) Write answer in standard form a +bi Group of answer choices

Mathematics
1 answer:
Anton [14]3 years ago
5 0

Answer:

A=-5+9i

Step-by-step explanation:

\left(3+4i\right)-\left(8-5i\right)\\\\\mathrm{Group\:the\:real\:part\:and\:the\:imaginary\:part\:of\:the\:complex\:number}\\\left(a+bi\right)\pm \left(c+di\right)=\left(a\:\pm \:c\right)+\left(b\:\pm \:d\right)i\\\\=\left(3-8\right)+\left(4+5\right)i\\3-8=-5\\4+5=9\\\\=-5+9i

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An object that weighs 24 pounds on Mercury weighs approximately 80 pounds on Earth. A rock weighs 240 pounds on Mercury. What is
AnnyKZ [126]

Answer:

800 pounds.

Step-by-step explanation:

We have been given that an object that weighs 24 pounds on Mercury weighs approximately 80 pounds on Earth. A rock weighs 240 pounds on Mercury. We are asked to find the weight of rock on Earth.

We will use proportions to solve our given problem as proportions state that the ratio between two proportional quantities is equal.

\frac{\text{Weight on Earth}}{\text{Weight on Mercury}}=\frac{80}{24}

Upon substituting our given value, we will get:

\frac{\text{Weight on Earth}}{240}=\frac{80}{24}

\frac{\text{Weight on Earth}}{240}\cdot 240=\frac{80}{24}\cdot 240

\text{Weight on Earth}}=\frac{80}{1}\cdot 10

\text{Weight on Earth}=800

Therefore, the weight of rock on Earth would be approximately 800 pounds.

4 0
3 years ago
Which questions are statistical questions?
topjm [15]

Answer:

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8 0
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I need help with multiplying and dividing powers
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You need to know these two formulas:

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PLEASE HELP W THIS I WILL Give YOU THE BRAINLIEST PLEASE ! - What does it mean to have a skewed distribution? What causes a skew
nata0808 [166]

Answer:

Explained below

Step-by-step explanation:

A) A skewed distribution in a dataset is when the median is not equal to the mean in such a manner that the bell curve is tilted to the left or right.

B) If in a data set, if there are outliers which are extremely large or extremely small in comparison to other values in that same dataset, then we can say that such a curve will be pulled towards the outlier and thus the distribution is skewed.

Also, if the curve is inclined to the left, it means there are few extreme values to the left and it is negatively skewed.

Similarly, if the curve is inclined to the right, it means there are few extreme values to the right and is positively skewed.

C) Example of a research question is;

If in a developed country where the poverty level is about 0%, if we collect the data of income of the households, we will discover majority of people with average income and very few people with extreme high levels of income. This condition means the data is positively skewed.

4 0
3 years ago
What is the equation in point-slope form that represents the line going through (1,3) and (4,6)
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