HELP PLEASEEEE I GIVE BRAINLIest

Answer:

42

Step-by-step explanation:

1/2(4 x 5) + (8 x 4) = 42

Answer: V(X) = 0.96

Step-by-step explanation: Variance is defined as the average of the squared difference from the sample or population mean.

For a discrete frequency distribution is calculated following the steps:

1) Determine expected value or mean:

[tex]E(X)=\frac{\Sigma xf}{\Sigma f}[/tex]

[tex]E(X)=\frac{0(700)+1(900)+2(600)+3(300)}{2500}[/tex]

E(X) = 1.2

2) Multiply frequency and the squared difference of x and expected value:

[tex]f(x-E(X))^{2}[/tex]

[tex]700(0-1.2)^{2}=1008\\900(1-1.2)^{2} = 36\\600(2-1.2)^{2} = 384\\300(3-1.2)^{2} = 972[/tex]

3) Add them:

[tex]\Sigma [f(x-E(X))^{2}][/tex] = 1008 + 36 + 384 + 972 = 2400

4) Divide the sum per frequency total:

[tex]V(X)=\frac{\Sigma [f(x-E(X))^{2}]}{\Sigma f}[/tex]

[tex]V(X)=\frac{2400}{2500}[/tex]

V(X) = 0.96

The variance of the number of cups of coffee is 0.96.

The answer is option ’a’

Answer:

18

Step-by-step explanation:

The ratio of strawberry yogurt cups to all of the yogurt is 6:10.  We know that there are 30 total yogurt cups, which is the same as 3 times 10.  to find the number of strawberry cups, 6 should be multiplied by 3 as well to equal 18.  18:30 is still the same ratio as 6:10

Answer:

I think it's 30 but I'm not 100% sure

Answer:

If you know the distance the train went and how long it was travelling for you can use the formula:

speed = [tex]\frac{distance}{time}[/tex]

Answer:

Trains regularly reach speeds of 125-150 mph (201-241 kph).

Step-by-step explanation:

Step-by-step explanation:

4×4 = 16

watch the unshaded area. its just like the curcle taken out from there so thats mean the area is equal to the area of square

Answer:

he has 320 masks on his wall

Answer:

-7/3

Step-by-step explanation:

substitute 3

w(3)=-2(3)-1

3w=-6-1

3w=-7

divide by 3

w=-7/3

Answer:

-3.6 is a negative number compared to 1.2. 1.2 is -3 times less than -3.6. -3.6 is -3 times more than 1.2

Step-by-step explanation:

(can I get brainliest)

Answer:

they are both number with a decimal in it

Step-by-step explanation:

Answer:

A (no because the graph is not a straight line)

Step-by-step explanation:

The rate of change is not consistent, and therefor is not proportional.

Answer:

(D) No, because the graph does not pass through the origin.

Step-by-step explanation:

because its the correct answer (im smart)

Answer:

NO i do not think so because you would end with a -4 not positive because a positive times a negative is a negative so (-3,4) is not a solution.

I hope this helps sorry if am wrong

Step-by-step explanation:

Answer:

NP=14

BC=44

Step-by-step explanation:

[tex]60-24-22=14\\NP=14\\MN=BP=PC\\BC=2(MN)\\BC=44[/tex]

Answer:

A-2

B.1/-2

c.1/2

D.2

Step-by-step explanation:

A-2

B.1/-2

C.1/2

D.2

Answer:

1/3 of chance

The probability that you will roll doubles will be 1/36.

Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Probability = Number of favourable outcomes / Number of sample

Given that you have two six-sided dice where each side is equally likely to land face up when rolled.

The favourable outcomes are {2,2} = 1.

Total outcomes = 36

The probability will be calculated as,

Probability = 1 / 36

To know more about probability follow

https://brainly.com/question/24756209

#SPJ5

Answer:

The container is filled to 87.5% of the maximum capacity.

Step-by-step explanation:

Given

Maximum capacity of container = m = 64 ounces

Filled capacity=> as it is 8 less than maximum capacity = 64-8 = 56 ounces

The container is 56 ounces full.

To find the percentage:

[tex]percentage = \frac{56}{64}*100\\= 0.875*100\\=87.5\%[/tex]

Hence,

The container is filled to 87.5% of the maximum capacity.

Answer:

there are 34 green marbles

there are 91 total marbles

Step-by-step explanation:

57 - 23 = 34

57 + 34 = 91

Answer:

Area: 59.5 ft squared

Perimeter: 31.6 feet

Step-by-step explanation:

Area:

For the area of the square, you're going to use the formula length times width. The length and width are both 7, so you'll do 7 times 7, which is 49. Next, you need to find the area of the triangle. It's a bit more confusing since they give you the hypotenuse (7.6 ft), but they did that to try and trick you. The area of a triangle is length times width divided by two. So, you're going to take the width (3) and multiply it by the length (7). The length is 7 because the length of the square and the triangle are the same since the bottom of the triangle is the same length as the top of the square. Anyway, using the formula, you will do 7 times 3 divided by 2, which is 21 divided by 2, which is 10.5. Add the 10.5 to the 49 we got from the square, and you'll get 59.5 feet squared.

Perimeter:

For the perimeter, you just need to add the side lengths. Starting at the top and going to the right, we can add 7.6+7+7. We don't get the left length, but it's the same as the rest of the square (7) because all sides of a square are equal. So, now we have 7.6+7+7+7, which is 28.6, and we just need the last one which is 3, so the final answer is 31.6 feet.

Answer:

Area: 59.5 ft squared

Perimeter: 31.6 feet

Step-by-step explanation:

Answer:

L.C.M of 15 and 30 is 30.

Answer: 8.1 ounces

Step-by-step explanation:

Answer:

She took 8.1

Step-by-step explanation:

you take 24.3 (the total number of ounces then divide by 3 since you drongk 3 glasses and you get 8.1

Answer:

84cm

Step-by-step explanation:

l = 302-(67*2)/2

l = (302cm - 134)/2

l = 168/2

l = 84cm

Answer:you know how to get it look it up :D

Step-by-step explanation:

Give me big brain plz

Answer:

B, C

Step-by-step explanation:

B - cirrus

C - cumulus

I could be wrong, but I believe this is correct.

Answer:

cumulus clouds

altoStratus clouds or cirrus?

Step-by-step explanation:

Alternate Forms:

13 x = 10

13 x - 10 = 0

11 x - 4 = -2 (x - 3)

Expandend Form:

11 x - 4 = 6 - 2 x

Solution:

x = 10/13

Answer:

I think the answer is -2x squared +19x-12. I hope that this helps:)

Step-by-step explanation:

Answer:67 or 66.549674907

Step-by-step explanation:

Man women baby

Answer:

-288a(squared)b

Step-by-step explanation:

Just plug it into a calculator :)