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BARSIC [14]
4 years ago
8

Simplify. −2i⋅(−3i)

Mathematics
2 answers:
krok68 [10]4 years ago
8 0

Answer:

-6

Step-by-step explanation:

-2i * -3i

6 i^2

Remember that i^2 = -1

6 * -1

-6

MissTica4 years ago
7 0

Answer:

the answer is -6

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5x
ValentinkaMS [17]

This question is incomplete

Complete Question

If the measurement of a central angle is 5pi/6, find the length of its intercepted arc in a circle with a radius of 15 inches

a 33.4 inches

b. 35.6 inches

C. 37.5 inches

d. 39.3 inches

Answer:

d. 39.3 inches

Step-by-step explanation:

We are to find the Arc length of the circle

To solve the above question, the formula is given as:

Arc length = Central angle × radius

From the above Question, we are given:

Central angle = 5pi/6 = 5π/6

Radius = 15 inches

Hence,

Arc length = 5π/6 × 15 inches

Arc length = 235.61944901923448/ 6

Arc length = 39.26990817 inches

Approximately , the Arc length

= 39.3 inches.

Therefore, Option d is the correct answer.

6 0
3 years ago
All boys grow up 3.75 inches per year. You measure a boy who is 9 years old
Brilliant_brown [7]

Answer:

UwU UwU UwU UwU

Step-by-step explanation:

5 0
3 years ago
What is the solution to the equation 2 ( 5 + 2 x ) = − 4 + 6 x ? x = 3 2 x = 3 2 x = 7 6 x = 7 6 x = 2 x = 2 x = 7 x = 7
soldi70 [24.7K]

Answer:

7=x

Step-by-step explanation:

multiply 5 and 2x by 2, you'll then have (10+4x)=-4+6x. Then add 4 to both sides and you have (14+4x)=6x. Subtract 4x from both sides and that'll get you 14=2x and you divide 2 from each side to get x by itself so 7 is your answer.

5 0
3 years ago
Bananas are on sale at 8 for 96. find the cost of 7 bananas
loris [4]

This is a proportion problem. Set up your equation:

8/96 = 7/x

Now cross multiply

96 x 7 = 672

672/8 = 84


Answer is $84

3 0
3 years ago
Read 2 more answers
Find (3a2 - 2a + 4) - (a2 - 3a + 7) .
melisa1 [442]
<span>(3a^2 - 2a + 4) - (a^2 - 3a + 7) = (distribute the negative sign)
3a^2 - 2a +4 - a^2 + 3a - 7 = (add like terms)
2a^2 + a - 3
So, the answer is A!

</span>
6 0
3 years ago
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