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fenix001 [56]
3 years ago
14

Simplify the expression. Make sure to show all steps. Write in standard form 6•9i + (4i)(2i)

Mathematics
1 answer:
Alex73 [517]3 years ago
4 0
6 x 9 x i = 54i
4(i) x 2(i) = 8i^2
54i +8i^2= 8i^2 +54i
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There were 15 students on the school bus before Brad's stop. Twelve students, including Brad, got on the bus at his stop. The bu
valina [46]

Answer:

24 students got off at the middle school.

Step-by-step explanation:

15 students

+

12 students

-

6 students

+

3 students

=

24 students (remaining students).

8 0
3 years ago
Lin solved the equation
Alekssandra [29.7K]

Answer: x=1/2

she was wrong, it's supposed to be

Step-by-step explanation: 8(x−3)+7=2x(4−17)

Step 1: Simplify both sides of the equation.

8(x−3)+7=2x(4−17)

(8)(x)+(8)(−3)+7=2x(4−17)(Distribute)

8x+−24+7=−26x

(8x)+(−24+7)=−26x(Combine Like Terms)

8x+−17=−26x

8x−17=−26x

Step 2: Add 26x to both sides.

8x−17+26x=−26x+26x

34x−17=0

Step 3: Add 17 to both sides.

34x−17+17=0+17

34x=17

Step 4: Divide both sides by 34.

34x/34=17/34 x=1/2

3 0
2 years ago
To find the height of a tower, a surveyor positions a transit the is 2 meters tall at a spot of 40 meters from the base of the t
Mrac [35]
The height of the tower roughly equals 41.421 meters.
5 0
3 years ago
In a survey, of the voters support a particular referendum. If 40 voters are chosen at random, find the mean and variance for th
Katyanochek1 [597]

This question is incomplete, the complete question is;

In a survey, 55% of the voters support a particular referendum. If 40 voters are chosen at random,

find the mean and variance for the number of voters who support the referendum.

Answer:

a) The Mean is 22

b) Variance is 9.9

Step-by-step explanation:

Given that;

55% of the voters support a particular referendum p = 0.55

q = 1 - p = 1 - 0.55 = 0.45

sample size n = 40

a)

Mean = sample size n × p

Mean = 40 × 0.55

Mean = 22

Therefore the Mean is 22

b)

Variance = n × p × q

so we substitute

Variance = 40 × 0.55 × 0.45

Variance = 9.9

Therefore the Variance is 9.9

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B5%5D%7B1150%3F%20%7D%20%20%3D%20" id="TexFormula1" title=" \sqrt[5]{1150? } = "
zimovet [89]
=4.0939
If you only need 1 d.p then it’s 4.1
3 0
2 years ago
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