Laura scored 12 correct out of 20 on her math test. What
was her percent?

Answer:

111

Please mark brainliest

Step-by-step explanation:

The total interest for the loan is $4,550. This means that over the course of 5 years, you will pay back the original loan amount of $13,000 plus $4,550 in interest for a total of $17,550.

To calculate the total interest for this loan, we need to use the simple interest formula:
Monthly EMI formula :
Interest = Principal x Rate x Time

In this case, the principal (amount borrowed) is $13,000, the rate is 7%, and the time is 5 years.

So,

Interest = $13,000 x 0.07 x 5

Interest = $4,550

It's important to keep in mind that this calculation assumes that the interest rate remains constant over the entire 5-year period.

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Regarding the graphed linear function, it is found that:

The slope-intercept representation of a linear function is shown by the equation presented below:

y = mx + b

The coefficients of the function, along with their meaning, are presented as follows:

In the context of this problem, the two points which the graph of the function goes through are as follows:

(-3,1), (2, -2).

We can see from the graph that the function is decreasing, hence the slope is negative.

Given two points, the numeric value of the slope is calculated as the change in y divided by the change in x, hence:

m = (-2 - 1)/(2 - (-3)) = -3/5.

The graph of the function is given by the image at the end of the answer.

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Answer:

A. The E(Y) is 0.80

B. The expected amount of the surcharges is $165

Step-by-step explanation:

A. In order to calculate the E(Y), we would have to calculate the following formula:

E(Y)=∑yp(y)

E(Y)=(0*0.5)+(1*0.25)+(2*0.20)+(3*0.05)

E(Y)=0+0.25+0.40+0.15

E(Y)=0.80

B. In order to calculate the expected amount of the surcharges we would have to calculate the following formula:

E($110Y∧2)=110E(Y∧2)

=110∑y∧2p(y)

=110((0∧2*0.5)+(1∧2*0.25)+(2∧2*0.20)+(3∧2*0.05))

110(0+0.25+0.80+0.45)

=$165

The calculated solution to the inequality is a < 6

from the question, we have the following parameters that can be used in our computation:

2a - 10 < 2

Divide through the equation by 2

So, we have

a - 5 < 1

Add 5 to both sides

a < 6

Hence, the solution to the inequality is a < 6 and the graph is attached

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Answer:

52 degrees

Step-by-step explanation:

first solve for x

9x-20=2x+36

9x=2x+56

7x=56

x=8

Now we find angle PTU

9(8)-20

72-20

52

Hopes this helps please mark brainliest

Answer:

C) 45-38

Step-by-step explanation:

The reason why this is your answer is because if we subtract, the answer is less than 12.

Thanks!

The value of AB is,

⇒ AB = 5.9

(rounded to nearest tenth)

We have to given that,

A right triangle ABC is shown.

Now, By trigonometry formula,

we get;

⇒ cos 33° = Base / Hypotenuse

Substitute all the values, we get;

⇒ cos 33° = AB / 7

⇒ 0.84 = AB / 7

⇒ AB = 0.84 × 7

⇒ AB = 5.88

⇒ AB = 5.9

(rounded to nearest tenth)

Thus, We get;

AB = 5.9

(rounded to nearest tenth)

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The unit cost C depends on the number of engines made. If x engines are made, then the unit cost is given by the function:

C(x)=0.2x²+ 248x +21,748 is $12917, which is the minimum unit cost.

Unit cost, also known as the break-even point, is the lowest price at which a company must sell a product to avoid losses. For example, a product with a breakeven unit cost of $10 per unit must sell above that price. Revenues above this price constitute the company's profit.

The calculates the unit cost of production as the break-even point. This cost constitutes the base price that the company uses to determine its market price.

In general, a unit must sell for more than its unit cost to generate a profit. For example, a company manufactures 1,000 units of a product that costs $4 each and sells them for $5 each. The profit is $5 minus $4, or $1 per unit of income. If a unit is priced at $3 per unit, there is a loss because $3 minus $4 (cost) is a loss of $1 per unit.

By the definition of average cost, we know it is the ratio of the total cost to the number of manufactured products. The total cost here is also termed as unit cost, which is equal to the sum of fixed cost and variable cost.

Hence, Average cost = Total cost/Number of units

                                    =  (Fixed cost + Variable cost)/Number of units.

According to the Question:

The minimum unit cost is $12197.

Take the derivative and set = 0  solve for x

C'(x) = 2x -360 = 0

x = 180 engines

C(180)  = (180)² -360(180) + 44,597

           = 44,597 - 32400

           = $12,197  minimum cost.

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Answer:

3 robots to 1 classrooms

Step-by-step explanation:

21 ÷ 7 = 3

7 ÷ 7 = 1

The ratio of robots to classroom in the scenario as a fraction is 3/1

The given parameters are:

Robots= 21

Classrooms = 7

The ratio of the robots to classrooms is represented as:

Ratio = Robot : Classroom

So, we have:

Ratio = 21 : 7

Express as fraction

Ratio = 21 /7

Simplify

Ratio = 3/1

Hence, the ratio of robots to classroom as a fraction is 3/1

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Answer:

Let's denote:

- The number of orders Diane served as `D`

- The number of orders Sam served as `S`

- The number of orders Boris served as `B`

From the problem, we know:

1. `D + S + B = 54` (the total number of orders they served)

2. `D = S - 6` (Diane served 6 fewer orders than Sam)

3. `B = 2S` (Boris served 2 times as many orders as Sam)

We can substitute equations 2 and 3 into equation 1 to solve for the variables:

Substitute `D` and `B` in equation 1:

`(S - 6) + S + 2S = 54`

Combine like terms:

`4S - 6 = 54`

Add 6 to both sides:

`4S = 60`

Divide by 4:

`S = 15`

Now that we know `S = 15`, we can find `D` and `B` by substituting `S` into equations 2 and 3:

`D = S - 6 = 15 - 6 = 9`

`B = 2S = 2 * 15 = 30`

So, Diane served 9 orders, Sam served 15 orders, and Boris served 30 orders.

Answer:

It's already in simplest form

Step-by-step explanation:

You can't simplify 2/19 anymore than 2/19

Answer:

-9/14 so the answer is B

Step-by-step explanation:

Hope this helps!!!!

Answer:

the answer is b

Step-by-step explanation:

The TRUE statement is a) Tim sought to promote non-response bias in his survey.

Non-response bias occurs when some of the respondents, especially married women, do not respond to Tim's survey because of the omission of the female names in the mailing addresses.  By failing to include the female names, Tim may cause some women to refuse participation while other females may not be reached.

We cannot conclude that Tim sought to promote participation bias or that he uncovered selection or deliberate bias in his methods.

Thus, we can conclude that Tim sought to promote non-response bias in his survey.

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Answer:

Step-by-step explanation:

Year 1: $850 * 0.91 = $773.50

Year 2: $773.50 * 0.91 = $704.69

Year 3: $704.69 * 0.91 = $641.95

...

Year 34: (continue the pattern)

We can continue this calculation for each year, but to save time, we can use an exponential decay formula:

Remaining Amount = Initial Amount * (1 - rate)^years

Substituting the values:

Remaining Amount = $850 * (1 - 0.09)^34

Calculating this expression:

Remaining Amount ≈ $850 * (0.91)^34 ≈ $255.88

After 34 years, approximately $255.88 will be left with Sally.

Answer:

C. 10 Miles

Step-by-step explanation:

All I did was count the units

Answer:

Its C.

Step-by-step explanation:

from (1,2) to (1,8) is 6, and from (1,8) to (5,8) is 4.

The value of the expression (a - b)² from the given equations is; 16

We are given the two equations as;

a + b = 10   -----(eq 1)

ab = 21    ------(eq 2)

From eq 1, square both sides;

(a + b)² = 10²

a² + 2ab + b² = 100

a² + b² = 100 - 2ab

We are given ab = 21. Thus;

a² + b² = 100 - 2(21)

a² + b² = 58

Now, we know that (a - b)² = a² - 2ab + b²

Thus;

(a - b)² = 58 - 2(21)

(a - b)² = 16

Complete question is;

If a + b = 10 and ab = 21, then the value of (a - b)² is?

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Answer:

probably C I'm terrible at math but that look about right

Answer:

10

Step-by-step explanation:

eight quarters in $2.00, 2 quarters in .50 cents = 10 quarters.

A time that an inequality was needed was when I was recently planning a trip to the beach with some friends. We wanted to make sure we had enough money to cover our expenses, so I used an equation to calculate our total cost.

The equation I used was:

Total cost > (number of people) x (cost per person)

In this case, the number of people was 4 and the cost per person was $100. So, our total cost was $400. I was able to use this equation to help me plan our trip and make sure we had enough money to cover our expenses.

I believe that by following these steps, my friend would be able to successfully plan their trip and avoid overspending.

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Answer:64

Step-by-step explanation:16 × 4

Answer:

9576

Step-by-step explanation:

Area of the triangle × height

(1/2×28×19)×36

In an analysis of variance, The treatment which is directly influenced by the size of the sample mean differences is SSbetween treatments

the value of SS(between) is between 30.

As ,

SS(between)

= SS(total) - SS(within)

= 70 - 40 = 30

ANOVA is a collection of statistical models and their related estimate processes (such as "variance" among and across groups) used to assess mean differences.

Ronald Fisher, a statistician, invented ANOVA. ANOVA is based on the law of total variance, which divides the observed variance in a variable into components attributed to different causes of variation.

In its most basic version, ANOVA gives a statistical test to determine if two or more population means are equal, and therefore extends the t-test beyond two means. To put it another way, the ANOVA is used to compare the differences between two or more means.

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The coefficient of determination, given the total variation and the explained variation would be 0.898.

R-squared, or the coefficient of determination, represents the proportion of variation within a response variable that can be explained by the regression model. This calculation is achieved through dividing the explained variation by the total variation.

We are given the explained variation as 18. 592. We are also given the total variation as 20. 711.

The coefficient of determination is:

= explained variation / total variation

= 18. 592 / 20.711

= 0. 898

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Full question is:

A regression equation is obtained for a collection of paired data. It is found that the total variation is 20.711, the explained variation is 18.592, and the unexplained variation is 2.119.

Find the coefficient of determination. Round to three decimal place

Answer:

Step-by-step explanation:

sin 63 = JK/8

sin = opposite/hypotenuse

answer is C

Answer:

me too (help)

Step-by-step explanation: