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2 years ago

(01.02 HC)

1 answer:

3 0

Expressions in these queries are arithmetical statements that may be defined by the operator, and the following discussion could indeed define a minimum of 2 terms containing the numbers or the variables, or both.

Given:

strawberry juice= 0.85 liter

mango juice=0.50 liter

watermelon juice= 0.15 liter

drank Juice= 0.30 liter

To find:

Expression=?

Solution:

In this case, all of them have to be combined.

Thus, $\bold{ 0.85 + 0.5 + 0.15 = 1.5}$

therefore, there were 1.5 liters in the jar,

She then drank 0.3 liters, so let's remove 0.3 from 1.5 to give you a 1.2 liter of the jar.

This would be the expression: $\bold{( 0.85 + 0.5 + 0.15 ) - 0.3 = 1.2}$

Learn more:

brainly.com/question/24467822

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Find the point-slope equation for the line that passes through the points (-10,-20)and (1,-9)

qaws [65]

10-20=10so the answer and 10-9=1 so that's the answer

6 0

3 years ago

I need help it’s due soon and i need help please also i solved one but i need three solved thanksssss

mel-nik [20]

Answer:

6) b = -13.55

8) p = -1

9) x = 7

4 0

3 years ago

what is the distance between point (-5, -2) and point (8, -3) rounded to the nearest tenth? will appreciate all the help

Sidana [21]

$\text {Distance =} \sqrt{((Y_2-Y_1)^2+(X_2-X_1)^2}$

$\text {Distance =} \sqrt{((-3-(-1))^2+(8-(-5))^2}$

$\text {Distance =} \sqrt{(-1)^2+(13)^2}$

$\text {Distance =} \sqrt{(1+169}$

$\text {Distance =} \sqrt{170}$

$\text {Distance =} 13.0 \text { units}$

8 0

3 years ago

An certain brand of upright freezer is available in three different rated capacities: 16 ft3, 18 ft3, and 20 ft3. Let X = the ra

ruslelena [56]

Answer:

$E(X)=16\cdot 0.3+18\cdot 0.1+20\cdot 0.6=18.6$

$E(X^2)=16^2\cdot 0.3+18^2\cdot 0.1+20^2\cdot 0.6=349.2$

$V(X) = E(X^2)-[E(X)]^2=349.2-(18.6)^2=3.24$

The expected price paid by the next customer to buy a freezer is $466

Step-by-step explanation:

From the information given we know the probability mass function (pmf) of random variable X.

$\left|\begin{array}{c|ccc}x&16&18&20\\p(x)&0.3&0.1&0.6\end{array}\right|$

Point a:

The Expected value or the mean value of X with set of possible values D, denoted by E(X) or μ is

$E(X) = $\sum_{x\in D} x\cdot p(x)$

Therefore

$E(X)=16\cdot 0.3+18\cdot 0.1+20\cdot 0.6=18.6$

If the random variable X has a set of possible values D and a probability mass function, then the expected value of any function h(X), denoted by E[h(X)] is computed by

$E[h(X)] = $\sum_{D} h(x)\cdot p(x)$

So $h(X) = X^2$ and

$E[h(X)] = $\sum_{D} h(x)\cdot p(x)\\E[X^2]=$\sum_{D}x^2\cdot p(x)\\ E(X^2)=16^2\cdot 0.3+18^2\cdot 0.1+20^2\cdot 0.6\\E(X^2)=349.2$

The variance of X, denoted by V(X), is

$V(X) = $\sum_{D}E[(X-\mu)^2]=E(X^2)-[E(X)]^2$

Therefore

$V(X) = E(X^2)-[E(X)]^2\\V(X)=349.2-(18.6)^2\\V(X)=3.24$

Point b:

We know that the price of a freezer having capacity X is 60X − 650, to find the expected price paid by the next customer to buy a freezer you need to:

From the rules of expected value this proposition is true:

$E(aX+b)=a\cdot E(x)+b$

We have a = 60, b = -650, and E(X) = 18.6. Therefore

The expected price paid by the next customer is

$60\cdot E(X)-650=60\cdot 18.6-650=466$

4 0

3 years ago

Math help please i will mark you brainliest

Finger [1]

The line of best fit is a line that follows the direction of the dots. It doesn't have to be perfect, it's just a general line to represent the data. Sometimes there isn't a line of best fit (if there is no correlation). It normally touches most of the dots.

The slope is about 1/2 and the point where the line touches the y axis is at 40 so that means an equation could be y = 1/2x + 40

When the advertising expenditure (x value) is 18,000, substitute it into the equation above. y = 1/2(18,000) + 40 which equals y = 9,040 . This is the expected revenue.

Hope this helps!

4 0

3 years ago