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zalisa [80]
3 years ago
5

You and two friends buy snacks for a field trip. Using the

Mathematics
1 answer:
stepladder [879]3 years ago
7 0

Answer:

13.15

Step-by-step explanation:

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Math questions, pls help me and ill reward <3 : )
EastWind [94]

Answer:

X = 6

Step-by-step explanation:

See Attachment

5 0
3 years ago
Assume the random variable x is normally distributed with mean u = 90 and standard deviation o=5. Find the indicated probability
Setler79 [48]

<u>Given</u>:

Let the random variable x is normally distributed with mean \mu=90 and \sigma=5

We need to determine the probability of P(X

<u>Probability of </u>P(X<u>:</u>

The formula to determine the value of P(X is given by

Z=\frac{X-\mu}{\sigma}

Thus, we have;

P(X

Simplifying, we get;

P(X

P(X

Using the normal distribution table, the value of -2 is given by 0.0228

P(X

Thus, the value of P(X is 0.0228

6 0
3 years ago
5. 4i(-2 - 4i)
Wewaii [24]

Answer:

4i( - 2 - 4i) =  - 8i + 16 \\  \\ 5i.i.( - 2i) = 10i \\  \\  (- 5 - i)(1 + i) =  -5-5i-i+1\\=-4-6i

4 0
2 years ago
Which equation(s) represents a proportional relationship?
enyata [817]

Answer:

A and C are proportional relationships.

Step-by-step explanation:

Recall that a "proportional relationship" has no constant term.  Thus, we eliminate Answers B and D immediately.

Answer A represents a proportional relationship:  y varies directly with the square of x.

Answer C also represents a proportional relationship:  y varies directly with x.

4 0
3 years ago
5x + 3 = 7x – 1. Find x
nasty-shy [4]

Answer:

x = 2

Step-by-step explanation:

5x + 3 = 7x - 1

Subtract 3 to both sides

5x = 7x - 4

Subtract 7x to both sides

-2x = -4

Divide by -2 to both sides.

x = 2

Hope this helps and pls do mark me brainliest if you can:)

5 0
3 years ago
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