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yan [13]
3 years ago
9

If a = - i and b = 3 , then find the value of the a ^ 2 * b in fully simplified form .

Mathematics
1 answer:
LiRa [457]3 years ago
7 0

Answer:

a^2 * b = 3i^2

Step-by-step explanation:

Given

a = -i

b = 3

Required

Determine a^2 * b

To do this, we simply substitute -i for a and 3 for b in a^2 * b

This gives:

a^2 * b = (-i)^2 * 3

Evaluate the expression in bracket

a^2 * b = i^2 * 3

This gives:

a^2 * b = 3i^2

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Just wondering what 4r x 3f is? If I could get a reply ASAP that would be nice. I think it's 12rf?
Korolek [52]

Answer:

12rf

Step-by-step explanation:

4 times 3 is 12 and r times f just becomes rf so you are correct.

6 0
4 years ago
Round 1.965 to the nearest tenth.
Ne4ueva [31]

Answer: 2.0

Step-by-step explanation:

To round 1.965 to the nearest tenth consider the hundredths’ value of 1.965, which is 6 and equal or more than 5. Therefore, the tenths value of 1.965 increases by 1 to 0.

1.965 rounded to the nearest tenth = 2.0

3 0
3 years ago
What is the area of a triangle, in square meters, whose base is meters and whose height is half its base, in terms of ?
zhuklara [117]

Answer:

Remember, double the area and then divide by the known side length. To calculate the area of a triangle, we multiply the base times the height and divide by 2. If you are given the area, follow the steps backwards. You will multiply by 2 and divide by the given length.

For instance, there's the basic formula that the area of a triangle is half the base times the height. This formula only works, of course, when you know what the height of the triangle is. ... That is to say, the area of a triangle is half the product of two sides times the sine of the included angle.

5 0
3 years ago
What is the volume of this prism?
Fiesta28 [93]

Answer:

36 cubic inches

Step-by-step explanation:

v=(3)(6)(2)=36

Hope this helps

3 0
3 years ago
Consider this quadratic equation.
enot [183]

Answer:

1 positive solution (and 1 negative)

the greatest solution is about 2.87

Step-by-step explanation:

so, it is

x² + 2x + 7 = 21

x² + 2x - 14 = 0

the general solution to such a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = 2

c = -14

x = (-2 ± sqrt(2² - 4×1×-14))/(2×1) =

= (-2 ± sqrt(4 + 56))/2 = (-2 ± sqrt(60))/2 =

= (-2 ± sqrt(4×15))/2 = (-2 ± 2×sqrt(15))/2 =

= -1 ± sqrt(15)

x1 = -1 + sqrt(15) = 2.872983346... ≈ 2.87

x2 = -1 - sqrt(15) = -4.872983346...

3 0
2 years ago
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