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3 years ago

Pls help! will mark brainliest

Mathematics

2 answers:

OlgaM077 [116]3 years ago

5 0

Answer:

Step-by-step explanation:

Alexxx [7]3 years ago

3 0

Answer:

Step-by-step explanation:

The only equation where the y gets bigger when the x gets bigger is y=mx.

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Bob and Anna are planning to meet for lunch at Sally's Restaurant, but they forgot to schedule a time. Bob and Anna are each goi

Viktor [21]

Answer:

The expected cost is $8.75

Step-by-step explanation:

Given

$Time = \{1pm, 2pm, 3pm, 4pm\}$

$C_1 = \$5$ --- If Bob and Anna meet

$C_2 = \$10$ --- If Bob and Anna do not meet

Required

The expected cost of Bob's meal

First, we list out all possible time both Bob and Anna can select

We have:

$(Bob,Anna) = \{(1,1),(1,2),(1,3),(1,4),(2,1),(2,2),(2,3),(2,4),(3,1),(3,2),(3,3)$ $,(3,4),(4,1),(4,2),(4,3),(4,4)\}$

$n(Bob, Anna) = 16$

The outcome of them meeting at the same time is:

$Same\ Time = \{(1,1),(2,2),(3,3),(4,4)\}$

$n(Same\ Time) = 4$

The probability of them meeting at the same time is:

$Pr(Same\ Time) = \frac{n(Same\ Time)}{n(Bob,Anna)}$

$Pr(Same\ Time) = \frac{4}{16}$

$Pr(Same\ Time) = \frac{1}{4}$

The outcome of them not meeting:

$Different = \(Bob,Anna) = \{(1,2),(1,3),(1,4),(2,1),(2,3),(2,4),(3,1),(3,2)$

$,(3,4),(4,1),(4,2),(4,3)\}$

$n(Different) = 12$

The probability of them meeting at the same time is:

$Pr(Different) = \frac{n(Different)}{n(Bob,Anna)}$

$Pr(Different) = \frac{12}{16}$

$Pr(Different) = \frac{3}{4}$

The expected cost is then calculated as:

$Expected = C_1 * P(Same) + C_2 * P(Different)$

$Expected = \$5 * \frac{1}{4} + \$10 * \frac{3}{4}$

$Expected = \frac{\$5}{4} + \frac{\$30}{4}$

Take LCM

$Expected = \frac{\$5+\$30}{4}$

$Expected = \frac{\$35}{4}$

$Expected = \$8.75$

The expected cost is $8.75

4 0

3 years ago

Please help I don't get this question

Anna [14]

Answer:

10x+30

Step-by-step explanation:

Using distributive property, we have to take the x and 3 out of the parenthesis and simplify the equation.

10(x+3)

We can write this equation out as...

10 · x + 10 · 3

since 10 · x is 10x and 10 · 3 is 30 we can rewrite the simplified version as...

10x+30

Hope this Helps!!! :)

5 0

3 years ago

Read 2 more answers

Find the area of the trapezoid.

bija089 [108]

The answer is 27 cm squared

8 0

3 years ago

Is the value of the expression greater than 1, equal to 1, or less than 1? 3^-3

kompoz [17]

Answer:

less than one if you're math is right you should know

Step-by-step explanation:

1 is always less than 3^-3

5 0

3 years ago

I need help with this please

Flauer [41]

Isosceles i’m pretty sure

6 0

3 years ago