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3 years ago

62x+2.63x = 1 Solve EN

Mathematics

1 answer:

motikmotik3 years ago

5 0

Step-by-step explanation:

answer is in photo above

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What is the principal square root of -4

devlian [24]

Answer:

The principal square root of -4 is 2i.

Step-by-step explanation:

$\sqrt{-4}$ = 2i

We have the following steps to get the answer:

Applying radical rule $\sqrt{-a} =\sqrt{-1} \sqrt{a}$

We get $\sqrt{-4} =\sqrt{-1} \sqrt{4}$

As per imaginary rule we know that $\sqrt{-1}=i$

= $\sqrt{4} i$

Now $\sqrt{4} =2$

Hence, the answer is 2i.

6 0

3 years ago

The list price of a diamond ring is $662. The jeweler is offering a chain discount of 15% less 10%. What is the final net price

Mnenie [13.5K]

672 dollars is the net price because 15 percent off of 10 percent of 662 dollars is about 10 dollars and 10 + 662 is 672

6 0

3 years ago

Not sure how to do this

irinina [24]

Answer:2x × 3 (Don't solve it cause you cant)

Step-by-step explanation:For the first one in parentheses you can't do it because their has to be an x with the two so you can do the problem.

For the next one you can do it. So for every letter that doesn't have a number their is always an invisible 1 in front of it. So it's 1x to the second power + 1x-1 so 1×1 is 1. 1x+1x=2x and the 2 and the one that doesn't have a letter equals 3. So the answer is

2x × 3 Hopefully this is correct and helps you out!

6 0

3 years ago

There are two numbers whose sum is 496 . One number is thrice the other . what are the numbers?

alexdok [17]

X + 3x = 496
x = 496/4
X = 124

Another Number equal to 496-124 equal to 372

5 0

3 years ago

According to the Shannon Diversity Index, which of the five blocks above, with each containing 36 squares, would show the greate

Sladkaya [172]

Answer:

Block 5

Step-by-step explanation:

The Shannon Diversity Index rewards larger numbers of species and more even distribution of species. On the face of it, Block 5, with its uniform distribution among 4 species, should have the highest index. When we do the calculation, we find this is the case. (see attachments)

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The SDI is the negative of the total of the products of relative frequency and the natural log of that relative frequency.

3 0

3 years ago