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3 years ago

4[1 2 -1 5] Someone help me with this bs

Mathematics

2 answers:

Korolek [52]3 years ago

8 0

Answer: -12

Step-by-step explanation:

We have 4[12 -15]

Next, we have subtract in the parentheses since it's part of PEDMAS

12-15

After that, we get -3. Whenever a you multiply a whole number with a negative number, the whole becomes negative.

12- 15= -3

And Lastly, we multiply.

4x -3= -12

Hope this helps!

natulia [17]3 years ago

7 0

Answer:

<u>-12</u>

Step-by-step explanation:

12 - 15 = -3

4 ( -3 )

= -12

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Molly and James tracked the average temperature in their city for the past 8 days. They recorded their temperature findings in t

marusya05 [52]

Answer:

4.25

Step-by-step explanation:

Here in this question, we want to calculate the mean absolute deviation of the data.

The first thing we will do here is to calculate the mean;

= (74 + 79 + 76 + 85 + 87 + 83 + 86 + 78)/8 = 81

Now, the next thing to do here is to calculate how far each of the values have deviated from the mean. This can be calculated by subtracting the mean from each individual value;

This is presented in the table on the attachment, please check attachment for this

Afterwards, we find the absolute value of all these subtractions then divide by 8 which is the number of values in the data.

Mean absolute deviation = Sum of all absolute deviations/number of values in dataset

5 0

3 years ago

An experiment has four equally likely outcomes: E1, E2, Es, and E.Round your answers to three decimal places. a. What is the pro

V125BC [204]

Answer:

a. 0.25

b. 0.50

c. 0.75

Step-by-step explanation:

P(E1) = 0.25

P(E2) = 0.25

P(Es) = 0.25

P(E) = 0.25

a. Since there are 4 outcomes with the same probability of occurring, the probability of E occurring is:

$P(E) = \frac{1}{4}=0.25$

b. The probability of any two outcomes occurring is twice the probability of a single outcome occurring

$P(two\ outcomes) = 2*P(one\ outcome) = \frac{2}{4}=0.50$

c. The probability of any three outcomes occurring can be written as 100% minus the probability of the remaining outcome occurring

$P(three\ outcomes) = 1-P(one\ outcome) = 1-\frac{1}{4}=0.75$

6 0

3 years ago

A bag contains 15 marbles. The probability of randomly selecting a green marble is 1/5. The probability of randomly selecting a

slava [35]

Answer:

6 blue marbles

Step-by-step explanation:

Given;

Total number of marbles N = 15

probability of randomly selecting a green marble

P(G) = 1/5

The probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble P(G∩B) = 2/25

P(G∩B) = P(G) × P(B)

P(B) = P(G∩B) ÷ P(G)

The probability of selecting a blue marble

P(B) = 2/25 ÷ 1/5 = 2/5

The number of blue marbles N(B) = P(B) × N

N(B) = 2/5 × 15 = 6

There are 6 blue marbles

7 0

3 years ago

Remy has $14,000 to invest in two mutual funds. One fund pays interest at 4% per year and the other fund pays interest at 7% per

AnnyKZ [126]

$4,200 at 4%, $9,800 at 7%

5 0

3 years ago

Eliza started her savings account with $100. Each month she deposits $25 into her account. Determine the average rate of change

joja [24]

We start off with 100 dollars. Which in this case Eliza deposits 25 every month.

What is average rate of change?

It is a measure of how much the function changed per unit, on average, over that interval

So this meaning that

25x + 100 would be are main focus here.

Replace x with 2 since we are finding the change of the 2nd account

25(2) + 100 = 150

Do the same problem but replace x with 10

25(10) + 100 = 350 dollars

So the average rate of change would be 25 dollars

8 0

3 years ago