In the least-squares regression line, the desired sum of the errors (residuals) should be a) zero b) positive c) 1 d) negative e) maximized

Answer:

The answer is 45

Step-by-step explanation:

135 and 225

Here, 225 > 135

225 = 135 × 1 + 90

Since remainder ≠ 0, we apply division Lemma to 135 and 90

135 = 90 × 1 + 45

Since remainder ≠ 0, we apply division Lemma to 90 and 45

90 = 45 × 2 + 0

Since remainder = 0, divisor 45 is the HCF

Thus, HCF (135, 225) = 45

-TheUnknownScientist 72

Answer:

HCF = 45

Step-by-step explanation:

225 = (135 × p) + q

⇒ 225 = (135×1) + 90

⇒ 135 = (90 × 1) + 45

⇒ 90 = (45 × 2) + 0

HCF (135, 225) = 45

There are several ways to prove a mathematical statement. These ways include: by contradiction, by induction, contraposition, etc

To prove the statement, we make use of proof by contradiction

From the question:

x is a composite number such that: x > 1

This means that 1 < a < x is a factor of x

This can be represented as:

[tex]x = a * b[/tex]

Where:

Assume that b is less than or equal to a.

Also, let

[tex]b > \sqrt x[/tex]​

This means that:

[tex]\sqrt x < b \ge a[/tex]

The above becomes

[tex]\sqrt x < a[/tex]

Rewrite as:

[tex]a > \sqrt x[/tex]

So, we have:

[tex]x = a * b > \sqrt x * \sqrt x = x[/tex]

The above means that:

[tex]x > x[/tex]

The above inequality is a contradiction because, a number x cannot be greater than itself

This means that, the supposition is wrong.

Hence, the given statement has been proved by contradiction

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Using a system of equations, it is found that the trains will be side by side in 15 seconds.

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the equations are:

[tex]y_1 = 229t[/tex]

[tex]y_2 = 149t + 1200[/tex]

They will be side-by-side when:

[tex]y_1 = y_2[/tex]

Hence:

[tex]229t = 149t + 1200[/tex]

[tex]80t = 1200[/tex]

[tex]t = \frac{1200}{80}[/tex]

[tex]t = 15[/tex]

The trains will be side by side in 15 seconds.

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The slope of the line that passes through the points (-7, -2) and (-15, -14) is 3/2.

The given coordinate points are (-7, -2) and (-15, -14).

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The formula to find the slope of a line is slope = (y2-y1)/(x2-x1)

The slope of the line is

Put (x1, y1) =(-7, -2) and (x2, y2)=(-15, -14)

Slope = m= (-14-(-2))/(-15-(-7))

= -12/(-8)

= 3/2

Therefore, the slope of the line that passes through the points (-7, -2) and (-15, -14) is 3/2.

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Answer:

C

because:

[tex]y = 0.074x + 50.48 \: \: \\ \: when \: x = 2158 \\ y = 0.074(2158) + 50.48 \\ y = 210 \\ when \: x = 2040 \\ y = 0.074(2040) + 50.48 \\ y = 200 \\ [/tex]

So the equation can be used to calculate fair housing prices is:

[tex]y = 0.074x + 50.48[/tex]

Answer:

Given two items with a price and quantity, this determines which is the better buy by comparing unit prices. Finds the better deal.

Binomial Distribution

Calculates the probability of 3 separate events that follow a binomial distribution. It calculates the probability of exactly k successes, no more than k successes, and greater than k successes as well as the mean, variance, standard deviation, skewness and kurtosis.

Also calculates the normal approximation to the binomial distribution with and without the continuity correction factor

Calculates moment number t using the moment generating function

Binomial Option Pricing Model

This shows all 2t scenarios for a stock option price on a binomial tree using (u) as an uptick percentage and (d) as a downtick percentage

Bond Flat Price-Accrued Coupon-Market Price

Calculates the flat price, accrued coupon, and market price for a bond between valuation dates using the following methods:

1) Theoretical Method

2) Practical Method

3) Semi-Theoretical Method

Step-by-step explanation:

Step-by-step explanation:

when it is phrased like that it should mean that we apply the scale factor to the original images to create the new ones.

and that means the new images will in our case be bigger by the factor of 2.

therefore, the 4th answer option is correct.

2 cm turn into 2×2 = 4 cm

1.5 cm turn into 2×1.5 = 3 cm

3 cm turn into 2×3 = 6 cm

Answer:

its 100 pages ................

Answer:

80

Step-by-step explanation:

When we first look at this, it generally says "90% of what number is 72?" so that's what we can do.

We can change 90% into a decimal, and put in x, which is what our answer will be!

[tex]0.9*x=72[/tex]

We can multiply both sides of this equation by 100, and then divide by 90. After all of this, we have

[tex]x=72*10/9[/tex], which is 80.

Answer:

390 cubic centimeters

Step-by-step explanation:

the volume of a box is the length width and height all multiplied together

so this is what the equation would look like

5(6)(13)

you can split this up into

5(6) * 13

so 5(6) is 30

30(13)

this is 390

so the box is 390 cubic centimeters

Answer:

So you can make an equation.

So lets make the unknown number “x”

So it’s twice a number and it’s decreased by 3.
So 2x-3

The result is 25
2x-3=25
Now just solve for the number or “x”

X= 14

Answer:

C

Step-by-step explanation:

Answer:

Blah

Step-by-step explanation:

Identity property of multiplication

Identity property of multiplication: The product of 1 and any number is that number. For example, 7 × 1 = 7 7 \times 1 = 7 7×1=77, times, 1, equals, 7.

Answer:

0.74

Step-by-step explanation:

P(not E) = 1 - P(E) = 1 - 0.26 = 0.74

Answer

You can solve for x

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

Great job!

You earned

+5 pts

for helping

Step-by-step explanation:

Answer:

8 (hopefully)

Step-by-step explanation:

Exponents and Fractions always get dealt with before Math Symbols and Parentheses.

But other than that, you ALWAYS do times or divide from left to right, than plus or minus left to right (unless there's a parentheses, go for the number in the parentheses).

2 by the power of 3 (or 2^3) splits into three twos.

2 * 2 = 4 * 2 = 8 (2^3 = 8)

7 * 8 = 56

56 divided by 4 = 14

8 + 14 = 22

Long story sort

2^3 + 7 * 8 */. 4

8 + 7 * 8 */. 4

8 + 56 */. 4

8 + 14

22

Now than I do not remember what you're supposed to with the "= [Number]" but I do believe you're supposed to sum the left and the right. So I do believe it's 8, now than remember this is not an exact answer, due to not knowing what it's properly to be.

Answer:

  (2³ +7)·8÷4 = 30

Step-by-step explanation:

You want to add parentheses to make a true statement from ...

  2³ +7·8÷4 = 30

We recognize that 2³ +7 = 15 and 8÷4 = 2, and the product of these is 30. So, we need to insert parentheses to make (2³ +7) be evaluated before multiplying by 8 and dividing by 4:

  (2³ +7) · 8 ÷ 4 = 30

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By performing a change of units, we will see that she did make 1.375 cups of salad dressing.

First, we know that she combines 8 oz of oil and 3 oz of vinegar, then the total volume in ounces is:

V = 8oz + 3 oz = 11 oz

Now we want to know how many cups there are in 11 ounces, so we need to perform a change of units.

We know that:

1 oz = 0.125 cups

Then we can write:

11 oz = 11*(1 oz) = 11*(0.125 cups) = 1.375 cups

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Answer

48

Step-by-step explanation:

Semi-finals implies there are FOUR teams left...12 people implies THREE people per team

If we have to find the total number of coins then we can use the following rule:

Thus,

︎⠀⠀ ⠀⠀ ⠀⠀ ⠀︎⠀⠀ ⠀⠀ ⠀8×Total Number of Purse.

Answer:

1st box= 3

2nd box = 30

3rd box=3

4th=1200

5th= 15

Sixth =1305

Answer:

Attached

Step-by-step explanation:

Hope it helps :)

Answer:

9/5

Step-by-step explanation:

it is because 3/1 × 3×5

so which means 9/5

Answer:

1.8

Step-by-step explanation:

first you make the 3 3/1 then multiply 3/3 which are the numerators so that is 9 then you multiply the imaginary 1 that is under the 3 to the 5 so you get 9/5 and that simplified is 1 4/5 and then put that into a decimal is 1.8

Answer:

Step-by-step explanation:

A ratio can be expressed three (3) ways. The ratio of A to B can be expressed as any of ...

  A to B

  A : B

  A/B

It will be in reduced form when the numbers are mutually prime (have no common factors).

__

The ratio of burgers without onions to burgers with onions is ...

  without : with = 8 : 2 = 4 : 1

__

The ratio of history visitors (5) to science visitors (44) is ...

  history : science = 5 : 44

_____

Additional comment

Some problems can be fairly easily worked by considering the difference between A and B in the ratio A/B. However, those differences are irrelevant to this problem. Here, you're simply asked to write the ratios.

We note that the ratios asked for reverse the appearance of the numbers given in the problem. That is, the second number in the ratio requested is the number described first. This requires you pay attention to what you are given and what is requested. (That's always a good idea.)

Answer:

a.12^7 times 12^4=3^11 times 4^11

Answer:

-12x+3 greater than or equal to 5

-12x greater than or equal to to 2

To turn the negative sign of -12x into positive, we multiply both sides by minus, which shifts the inequality sign.

So, 12x less than or equal to 2

x is less than or equal to 1/6

Therefore, 0, -1, -3, -4 and -6 satisfy this inequality

The indication of QRS and TUV are similar is QRS ~ TUV.

Similar triangles are triangles that have the same shape but differ in size. Similar items include all equilateral triangles and squares with any side length. In other words, if two triangles are identical, their corresponding angles and sides are congruent and in equal proportion. The " ~ " sign here denotes the resemblance of triangles.

The three-sided polygon is the triangle. The following is the criteria for triangle similarity:

Corresponding angles of both triangles are equal, and corresponding sides of both triangles are proportional to each other.

In Triangle QRS and TUV the similarity sign is used.

We know the ≅ is the sign of Congruence.

and, ~ is the sign of Similarity.

So, the sign of Similarity is QRS and TUV.

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Answer:

Step-by-step explanation:

$50050050re=$450(1+2re)=450+900re=900re=50900=0.05555¯=5.555¯%

The amount of interest will be $50 for the investment.

Simple interest is a way to figure out how much interest will be charged on a sum of money at a specific rate and for a specific amount of time.

Contrary to compound interest, where we add the interest of one year's principal to the next year's principal to calculate interest, the principal amount in simple interest remains constant.

Given that Krisi took out a $500 discounted loan calculated using a simple interest rate of 5% for a period of 2 years.

The interest will be calculated as:-

SI = ( 500 x 5 x 2 ) / 100

SI = $50

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Answer:

Classes representing assets.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Our expression given: 3(x-6) + 2y

A. Substitute x = -7 and y = 10 into the equation.

[tex]3( - 7 - 6) + 2(10)[/tex]

Use the Distributive Property:

[tex] - 21 - 18 + 20[/tex]

Solve:

[tex] - 19[/tex]

B. Substitute x = 5 and y = -2 into the equation.

[tex]3(5 - 6) + 2( - 2)[/tex]

Use the Distributive Property:

[tex]15 - 18 + -4[/tex]

Solve:

[tex]-7[/tex]

C. Substitute x = 0 and y = 6 into the equation.

[tex]3(0 - 6) + 2(6)[/tex]

Use the Distributive Property:

[tex] - 18 + 12[/tex]

Solve:

[tex]-6[/tex]

D. Substitute x = 3 and y = 3 into the equation.

[tex]3(3 - 6) + 2(3)[/tex]

Use the Distributive Property:

[tex]9 - 18 + 6[/tex]

Solve:

[tex]-3[/tex]