Can someone please help this is due soon and I don’t know how to do it I’ll give brainlest

Answer: 15 Times

Step-by-step explanation: It's 15 Times because if you add all of the other rolled times together you'll get 60 and 75-60=15.

Answer:

The last one t/5-6=-3

Step-by-step explanation:

All you have to do is plug in 15 to each equation, knowing this if you add 15 into this equation you would get 15/5-6=-3 and this is true because 15/5=3, 3-6=-3!

I hope this helps and have a great day!

Answer:

Infinite many solutions

Step-by-step explanation:

9d − 8 = –8 + 9d

* add 8 to each side *

-8 + 8 cancels out

-8 + 8 cancels out

we're left with 9d = 9d

When the same number/variable is on each side of the equal sign there is an infinite amount of solutions

Answer:

  $5535.00

Step-by-step explanation:

You want the cost to produce 10 more units if 8 are being produced and the marginal cost function is c'(x) = 0.375x² -x +500.

The cost is the integral of the marginal cost. If we want 10 more units than the 8 being produced, the total cost for those units will be the definite integral of the marginal cost function from 8 to (8+10) = 18.

The attachment shows that integral to have a value of 5535.

The cost to produce 10 more units is $5535.00.

__

Additional comment

Many graphing calculators can do the numerical integration for you. The integral of the function is ...

  C(x) = x³/8 -x²/2 +500x

The cost of interest is C(18) -C(8).

estimated sum-114, actual sum-112.97

Step-by-step explanation:

76.6-77

25.5-26

10.87-11

77+26+11=114

76.6+25.5+10.87=112.97

Answer:

5

Step-by-step explanation:

180-108=72 interior + exterior angle add to 180

360/72=5

Answer:

Number of polygon sides = 360 / (180 - ONE INTERIOR ANGLE)

Number of polygon sides = 360 / (180 -108)

Number of polygon sides = 360 / 72

Number of polygon sides = 5

Source: http://www.1728.org/polygon.htm

Step-by-step explanation:

For the shortest commute time, a z-score of -2.5 would be desired. For the highest exam score, a z-score of 3.5 would be desired.

To have the shortest commute time, a negative z-score would be desired because it represents a value below the mean. A z-score of -2.5 would indicate a commute time that is 2.5 standard deviations below the mean and would be the most desirable in terms of having the shortest commute time.

To have the highest exam score, a positive z-score would be desired because it represents a value above the mean. A z-score of 3.5 would indicate an exam score that is 3.5 standard deviations above the mean and would be the most desirable in terms of having the highest exam score.

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Answer:

       -7 ± √6

x = ----------------

              2

Step-by-step explanation:

You have several options here.  One would be "completing the square," and another would be "quadratic formula."

Here the coefficients of this quadratic are a = 1, b = 7 and c = 2.

The discriminant is therefore b^2 - 4(a)(c), or 7^2 - 4(1)(2) = 6.

The roots are thus:

       -7 ± √6

x = ----------------

              2

Answer:

for number 11 the slope is 7 and for number 12 the slope is 10

Step-by-step explanation:

Answer:

Sin(A) = 42/47

Cos(A)=21/47

Tan(A)=42/21=2

Answer:

∠ B = 48° , a ≈ 18.0 , c ≈ 26.9

Step-by-step explanation:

∠ B = 180° - ( 90 + 42)° = 180° - 132° = 48°

using the tangent ratio in the right triangle

tan42° = \(\frac{opposite}{adjacent}\) = \(\frac{a}{20}\) ( multiply both sides by 20 )

20 × tan42° = a , then

a ≈ 18.0 ( to the nearest tenth )

using the cosine ratio in the right triangle

cos42° = \(\frac{20}{c}\) ( multiply both sides by c )

c × cos42° = 20 ( divide both sides by cos42° )

c = \(\frac{20}{cos42}\) ≈ 26.9 ( to the nearest tenth )

By mathematical induction, we have proved that for any positive integer n, 4 evenly divides 11n - 7n.

WHat is Divisibility?

Divisibility is a mathematical property that describes whether one number can be divided evenly by another number without leaving a remainder. If a number is divisible by another number, it means that the division process results in a whole number without any remainder. For example, 15 is divisible by 3

To prove that 4 evenly divides 11n - 7n for any positive integer n, we can use mathematical induction.

Base Case:

When n = 1, 11n - 7n = 11(1) - 7(1) = 4, which is divisible by 4.

Inductive Step:

Assume that 4 evenly divides 11n - 7n for some positive integer k, i.e., 11k - 7k is divisible by 4.

We need to prove that 4 evenly divides 11(k+1) - 7(k+1), which is (11k + 11) - (7k + 7) = (11k - 7k) + (11 - 7) = 4k + 4.

Since 4 evenly divides 4k, and 4 evenly divides 4, it follows that 4 evenly divides 4k + 4.

By mathematical induction, we have proved that for any positive integer n, 4 evenly divides 11n - 7n.

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Answer:

the only Answer is -4

Step-by-step explanation:

hope this helps

The graph goes through (5.44,2) and (8.16,3) is false.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

Given that price for gasoline is represented by the equation y = 2.72x,

where y r represents the total price for x gallons of gasoline

We have to check whether the line passes through (5.44,2) and (8.16,3)

From the equation the slope is 2.72.

Now let us check whether the two points gives the same slope.

m=3-2/8.16-5.44

=1/2.72

=0.36

Hence,  the graph goes through (5.44,2) and (8.16,3) is false.

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The square root of the quantity x plus 7 end quantity minus 1 equals x=2.

To find the square root:

Check for extraneous solutions:

Therefore, the square root of the quantity x plus 7 end quantity minus 1 equals x = 2.

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The correct question is given below:
The square root of the quantity x plus 7 end quantity minus 1 equals x

Answer:

363=90bags

then you look into it and say

440=200bags

Answer:

18 people

Step-by-step explanation:

If Rita made 36 brownies and each person in her class takes two, the equation is going to look like 36/2.

36/2 = 18

Answer: 18

Step-by-step explanation:

36/2

The factors of the polynomial x^3-9x^2+27x-27 are (x -3), (x - 3) and (x - 3)

The polynomial you provided is x^3-9x^2+27x-27. If you know one of the factors of this polynomial, we can use that to find the remaining factors.

One factor of this polynomial is (x-3) as it gives remainder zero when divided by (x-3)

quotient is  x² - 6x + 9

remainder is zero

So the remaining factors are (x-3) and x² - 6x + 9

Alternatively, we can factor the remaining quadratic polynomial  x² - 6x + 9

by using Factor theorem or by using difference of squares

x² - 6x + 9 = (x - 3)²

So the remaining factors are (x-3) and (x - 3)

So the original polynomial can be factored as (x-3)(x-3)(x-3) = (x-3)³

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Therefore, the value of the integral ∫2^6 (5f(x))^2 dx is 900.

If the average value of the function f on the interval 2 ≤ x ≤ 6 is 3, we can express it mathematically as:

(1/(6 - 2)) ∫2^6 f(x) dx = 3

Simplifying this equation, we have:

(1/4) ∫2^6 f(x) dx = 3

Now, let's calculate the value of the integral ∫2^6 (5f(x))^2 dx:

∫2^6 (5f(x))^2 dx = 25 ∫2^6 (f(x))^2 dx

Since the average value of f on the interval 2 ≤ x ≤ 6 is 3, we can substitute it into the equation:

25 ∫2^6 (f(x))^2 dx = 25 * (4/1) * 3^2

Simplifying further, we get:

25 * (4/1) * 3^2 = 25 * 4 * 9 = 900

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Answer:

SAS, because vertical angles are congruent.

Step-by-step explanation:

Use Pythagorean theorem to find the base of the right triangle

221^2 = 195^2 + b^2

b = 104 km

triangle area = 1/2 base * height =  1/2 * 104 * 195 = 10140 km^2

Now multiply by the height to find volume

10140 km^2  * 15 km  = 152100 km^3

\(\displaystyle\ y^4 +5y^2+9=(y^2+3)^2-y^2=(y^2-y+3)(y^2+y+3)\)

Answer:

Solution given;

\( y^{4}+5y²+9\)

keeping \(y^{4} and 9 together \)

\(y^{4}+9+5y²\)

\((y²)²+3²+5y²\).....[I]

we have

a²+b²=(a+b)²-2ab

or

a²+b²=(a-b)²+2ab

same like that

\((y²)²+3²=(y²+3)²-6y² or (y²-3)²+6y²\)

remember that while adding or subtracting the left term 5y² either adding 6y²or subtracting 6y²

should make the term perfect square

while subtracting it makes perfect square

so

we take

(y²)²+3²=(y²+3)²-6y²

again

substituting value of

(y²)²+3² in equation 1 and it becomes

(y²+3)²-6y²+5y²

solve like terms

(y²+3)²-y²

again

we have

a²-b²=(a+b)(a-b)

by using this.

(y²+3+y)(y²+3-y)

rearrange it

(y²+y+3)(y²-y+3) is a required factorisation form.

The correct answer for the third question is a. The residuals represent the difference between the actual y values and their predicted values.

a. The y-intercept in the simple linear regression model represents the value of y when x is zero. It is the point on the y-axis where the regression line intersects.

b. The slope in the simple linear regression model represents the average change in y per unit change in x. It indicates how much y changes on average for every one-unit increase in x.

Therefore, the correct answer for the first question is c. The y-intercept represents the value of y when x is zero.

For the second question, the correct answer is b. The slope represents the average change in y per unit change in x.

In regression analysis, the residuals represent the difference between the actual y values and their predicted values. They measure the deviation of each data point from the regression line. The residuals are calculated as the observed y value minus the predicted y value for each corresponding x value. They provide information about the accuracy of the regression model in predicting the dependent variable.Therefore, the correct answer for the third question is a. The residuals represent the difference between the actual y values and their predicted values.

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Answer:

d = 14

Step-by-step explanation:

\( \sin \: 45 \degree = \frac{a}{7 \sqrt{2} } \\ \\a = 7 \sqrt{2} \sin \: 45 \degree \\ \\ a = 7\sqrt{2} \times \frac{1}{ \sqrt{2} } \\ \\ a = 7 \\ \\ \sin \: 30 \degree = \frac{a}{d} \\ \\ \frac{1}{2} = \frac{7}{d} \\ \\ d = 2 \times 7 \\ \\ d = 14\)

Answer:14

Step-by-step explanation:opposite angle

Answer:

n is greater than negative 12

Step-by-step explanation:

I put the answer on the attached please see it

Researchers must use experiments to determine whether causal relationships exist between variables.

Researchers use experiments to determine causative relationships between variables. A causative relationship exists when a change in one variable (the cause) leads to a change in another variable (the effect).

Experiments allow researchers to manipulate the cause and observe the effect while controlling for other factors that could influence the relationship.

For example, if a researcher is interested in examining the relationship between smoking and lung cancer, they would conduct an experiment where they randomly assign participants to either a smoking or a non-smoking group.

The researcher would then collect data on the incidence of lung cancer in each group while controlling for other factors that might influence the relationship, such as age, gender, and socioeconomic status.

By randomly assigning participants to the smoking and non-smoking groups, the researcher can be confident that any differences in lung cancer incidence are due to the effect of smoking and not due to differences in the participants.

This type of experiment is called a randomized controlled trial and is considered the gold standard for determining causative relationships.

Experiments are essential in determining causative relationships between variables because they help to establish a cause-and-effect relationship and avoid confounding (when the relationship between two variables is observed because of a third variable that affects both).

In addition, experiments can also provide information about the direction and strength of the relationship between variables.

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--The given question is incorrect; the correct question is

"Researchers must use experiments to determine whether ______ relationships exist between variables."--

Answer:

8.3miles

Step-by-step explanation:

Here Jeff's sister drives 14 miles

his brother only drives 57/10 miles then the question is only asking the difference between their distance of driving to school knowing fully well that Jeff's sister drive farther than his brother, then we find the difference between their drives which is done bow

14miles -57/10 miles

= 83/10

= 8.3miles

Therefore, Jeff's sister drive 8.3miles farther than his brother

Answer:

A

Step-by-step explanation:

Because when you multiply anything with exponents, you multiply the coefficient and add the exponents.

Answer:

Step-by-step explanation:

y = x²  + 2x - 3

a = 1    ; b = 2  ; c = -3

Axis of symmetry  x = -b/2a

                                 \(=\dfrac{-2}{2*1}= -1\)

Axis of symmetry : x = -1

Vertex:

f(-1) = (-1)² + 2*(-1) - 3 = 1 -2- 3

     = -4

Vertex(-1 , -4)

Domain: all real numbers;

Range:  all real numbers greater than -4

             -4≥ y ≤∞

a> 0, Parabola open upwards

y -intercept:

At y-intercept x = 0

f(0) = 0 + 0 - 3 = -3

Y-intercept= -3

x-intercept:

At x-intercept y = 0

x² + 2x -3 = 0

x² + 3x - x - 3 =0

x(x + 3) -(x +3)=0

(x +3)(x -1) =0

x +3 = 0 ; x - 1 = 0

x = -3     ;x = 1

X-intercept:  (-3,0)  & (1 , 0)

Answer:

12.5

Step-by-step explanation:

for people who don't get another  quizzez assignment about ratios from their teachers, this question showed & the correct answer was 12.5 Hope this answer somehow helps.

Ounces of yogurt need for 10 ounces of blueberries is 8 ounce

Ratio of ounces of blueberries to ounces of yogurt = 4:5

Ounces of yogurt need for 10 ounces of blueberries

Ounces of yogurt need for 10 ounces of blueberries = 10[4 / 5]

Ounces of yogurt need for 10 ounces of blueberries = 2[4]

Ounces of yogurt need for 10 ounces of blueberries = 8 ounce

So, Option "A" is the correct answer to the following question.

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