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andre [41]
3 years ago
5

PLEASE HELP Simplify the expression to a + bi form: √ 25- √ -25 – √ 36 – √ -4

Mathematics
1 answer:
klasskru [66]3 years ago
7 0

Answer:

-1+3i

Step-by-step explanation:

\sqrt{25}  -  \sqrt{ - 25}  -  \sqrt{36}  -  \sqrt{ - 4}

Sqr root of 25 and 36 are 5 and 6 respectively

Sqr root of -25 and -4 are 5i and 2i respectively

Combine like with like

5-6=-1

5i-2i=3i

-1+3i

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Please can you give me help with answers. Thanks
Margaret [11]
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a = 180-140 = 40
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C=180-100 =80
Acute angled triangle

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b =180-90 = 90 
Right angled triangle

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C = 180-105 =75 
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Obtuse angled triangle

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5 0
3 years ago
Find the percent of increase from 40 gallons to 89 gallons. Round to the nearest tenth of a percent if necessary.
fredd [130]

Solution

- 89 gallons contains 40 gallons twice such that:

89=40+40+9

- This means that we can find at least 200% of 40 gallons in 89 gallons. This gives us what to expect.

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\frac{\text{new}}{\text{old}}\times100\text{ \%}

New, in this case, is 89 gallons, Old is 40 gallons.

- Thus, we can calculate the percentage as follows:

\begin{gathered} \frac{89}{40}\times100 \\ =2.225\times100 \\ =222.5\text{ \%} \end{gathered}

Thus, the answer is 222.5%

8 0
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I am interested in determining how long students take on average, to finish the first exam in my class. I specifically am intere
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Step-by-step explanation:

6 0
3 years ago
Help me please, its really easy.
notka56 [123]

Hey there. To find the answer solve 8^3=512.

Count the rows and columns of each to get C as your answer.

3 0
3 years ago
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Can someone create two expressions that are equivalent to 3(4j + 4 + j). Please show all steps in your work.
NNADVOKAT [17]
12j + 12 + 3j or 15j + 12. This is because if you use Distributive Property to distribute the 3, then you multiply 3 by all the number inside the parentheses. I have two expressions because once you get get the answer after you use the property, then you can combine like terms, such as 12j and 3j which is 15j. Hope this helps!
4 0
3 years ago
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