ASAP HELPPPPPPPPPPPPPP MEEEEB PLEASE

Answer:

Step-by-step explanation:

Before the increase it was 100%

So 20+100=120

156/120*100=130$

Don’t do it like 20/100 *156 and then minus it from 156 because you will get a wrong answer

(This was answered by another person on a another question.)

Answer:

130

Step-by-step explanation:

x * 1.2 = 156

x = 156/1.2

x = 130

Answer:

7. 49

8. -135

9. -96

10. 300

11. 0

12. -192

Answer: Yi did not list all the factors of 63

Step-by-step explanation:

Given That :

Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

Factors of 63: 1, 7, 9, 63

The greatest common factor is 7

Find the error in the calculation above :

Not all factors of 63 were listed

Answer:

Yi did not list all the factors of 63. or B/2

I took the test (Edge 2020/2021) :)

Step-by-step explanation:

Answer:

conclusion

Step-by-step explanation:

Statement (B) "There are no even prime numbers" can be proved wrong using a counterexample.

So, as we all know that all multiples of 4 are also multiples of 2.

But the statement (B) is wrong as there are prime even numbers.

For example: 2

The factor of 2 has only 1 and the number itself which is 2 (Even) and no other number.

Therefore, statement (B) "There are no even prime numbers" can be proved wrong using a counterexample.

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The correct question is given below;

3. Which statement could be proven false using a counterexample?

A) All multiples of 4 are also multiples of 2.

B) There are no prime even numbers.

Answer:

B and D

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

The Pythagorean Theorem says that in a right triangle,  \((\text{leg})^2+(\text{leg})^2=(\text{hypotenuse})^2\), so in this triangle, the legs are  5  and  a; the hypotenuse is 13.

\(5^2+a^2=13^2\\25+a^2=169\\a^2=144\\a=\sqrt{144}\\a=12\)

The probability that the dog that's selected will weigh less than 30 pounds will be 55%.

From the information given, it was stated that 45% of the dogs weigh more than 30 pounds. Therefore, the probability that the dog that's selected will weigh less than 30 pounds will be:

= 1 - 45%

= 55%

The probability that it weighs more than 30 pound given that it has long fur will be 27%.

The events are independent since the occurence of one doesn't affect the other one.

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Answer:

D. 15/6

Step-by-step explanation:

Answer:

20 weeks

Step-by-step explanation:

1315$-415$=900$

900/45=20

Hence 20 weeks

Answer: 45b  

Step-by-step explanation: Divide 1315 with 45xb.

Answer:

\( \boxed{ \bold{ \huge{ \sf{x = 29}}}}\)

Step-by-step explanation:

\( \sf{ - 3(3 + x) + 4(x - 6) = - 4 }\)

Distribute -3 through the parentheses

Similarly, Distribute 4 through the parentheses

⇒\( \sf{ - 9 - 3x + 4x - 24 = - 4}\)

Collect like terms

⇒\( \sf{x - 9 - 24 = - 4}\)

Calculate

⇒\( \sf{x - 33 = - 4}\)

Move 33 to right hand side and change it's sign

⇒\( \sf{x = - 4 + 33}\)

Calculate

⇒\( \sf{x = 29}\)

Hope I helped!

Best regards!!

The number that corresponds to the null hypothesis and the alternative hypothesis will be 3 and 6 respectively.

Specify the correct number from the list below that corresponds to the appropriate null and alternative hypotheses for this problem.

It should be noted that the null hypothesis suggests that there's no statistical relationship between the variables.

The alternative hypothesis is different from the null hypothesis as it's the statement that the researcher is testing.

In this case, the number that corresponds to the null hypothesis and the alternative hypothesis will be 3 and 6 respectively.

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Answer:

5√2

Step-by-step explanation:

25*2=50

√25=5

Answer:

Step-by-step explanation:

We do not consider zero to be a positive or negative number. For each positive integer, there is a negative integer, and these integers are called opposites. For example, -3 is the opposite of 3, -21 is the opposite of 21, and 8 is the opposite of -8. ... If an integer is less than zero, we say that its sign is negative

Answer:

No, Additive inverse of an integer is not always negative.

For example, the additive inverse of 7 is −7 and the additive inverse of -7 is 7.

Hope you understood!

Answer:

44 cards

Step-by-step explanation:

In a standard deck of 52 cards, there are 4 suits each of which has 13 cards.  Since we are finding the minimum value to be fully guaranteed of drawing five spades we can assume the scenario as follows:

If the first 39 cards picked are the complete full suits of hearts, diamonds, and clubs, then we know that the next 13 are spades. Since we have to find at least five spades we add 5 cards to the 39 to get our answer of 44 cards to be absolutely guaranteed.

Answer: 1000 x 1.05^n

Step-by-step explanation:

1.05 is the increase experienced each year and n is the number of years.

Answer:

The population of bees is increasing by 5% each year since 2010. Let P(n) be the population of bees in the nth year since 2010.

The explicit formula for the bee population can be found using the formula for compound interest:

P(n) = P(0) * (1 + r)^n

where P(0) is the initial population in 2010, r is the annual growth rate, and n is the number of years since 2010.

Substituting the given values, we have:

P(n) = 1000 * (1 + 0.05)^n

Simplifying the expression, we get:

P(n) = 1000 * 1.05^n

Therefore, the explicit formula that models the bee population for n years since 2010 is P(n) = 1000 * 1.05^n.

Answer:

9

Step-by-step explanation:

Answer:

3'2

Step-by-step explanation:

3'5x3'2=3'7

3'5x3'2/3'5=3'2

In a multiple regression model, the variance of the error term e is assumed to be the same for all values of the independent variable. Therefore, the correct option is C) the same for all values of the independent variable.

In multiple regression, we use several independent variables to predict the values of the dependent variable. The model estimates the relationship between the independent variables and the dependent variable by calculating the coefficients of the independent variables.

The error term e represents the difference between the predicted value of the dependent variable and the actual value of the dependent variable.

The assumption of constant variance of the error term e is known as homoscedasticity. It means that the variance of the errors is the same for all levels of the independent variables.

This assumption is important because, if the errors have different variances across the levels of the independent variable, the model may not accurately capture the relationship between the independent variables and the dependent variable, leading to biased and unreliable results. so, the correct answer is C).

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Answer:

26 - 11 = 15

Step-by-step explanation:

After approximately 12.13 years, the revenue of this firm is going to drop to $1 million.

The value of shares t years after their floatation on the stock market, is modelled by V = 10e0.09t

The initial value of shares = V when t = 0. So, putting t = 0 in V = 10e0.09t,

we get

V = 10e0.09 × 0= 10e0 = 10 × 1 = 10 million dollars.

The values after 5 years, 10 years and 12 years, respectively are:

For t = 5, V = 10e0.09 × 5 ≈ 19.65 million dollarsFor t = 10, V = 10e0.09 × 10 ≈ 38.43 million dollarsFor t = 12, V = 10e0.09 × 12 ≈ 47.43 million dollars

The total revenue (TR) in t years' time is modelled as TR = 10e−0.19t (in million dollars)

The current revenue is the total revenue when t = 0.

So, putting t = 0 in TR = 10e−0.19t, we get

TR = 10e−0.19 × 0= 10e0= 10 million dollars

Revenue in 5 years' time is TR when t = 5.

So, putting t = 5 in TR = 10e−0.19t, we get

TR = 10e−0.19 × 5≈ 4.35 million dollars

To find when the revenue of this firm is going to drop to $1 million, we need to solve the equation TR = 1.

Substituting TR = 1 in TR = 10e−0.19t, we get1 = 10e−0.19t⟹ e−0.19t= 0.1

Taking natural logarithm on both sides, we get−0.19t = ln 0.1 = −2.303

Therefore, t = 2.303 ÷ 0.19 ≈ 12.13 years.

So, after approximately 12.13 years, the revenue of this firm is going to drop to $1 million.

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Answer:

7

Step-by-step explanation:

Because the parts of the circle are congruent, the segments are as well, we can use that to make an equation then solve it like normal

9x-34=4x+1

-1 on both sides

9x-35=4x

-9x on both sides

-35=-5x

x=7

Answer:

The equation of the parabola is;

(y-3)^2 = 20(x-2)

Step-by-step explanation:

Here, we want to find the equation of the parabola given the focus and the vertex of the said parabola

Mathematically, we can have the equation represented as;

(y-k)^2 = 4a(x-h)

As we can see that the focus and the vertex lie on the same horizontal line of y = 3

In this case, a = 7-2 = 5

The coordinates of the vertex is (h,k) = (2,3) in this case

where h = 2 and k = 3

So the equation of the parabola will be;

(y- 3)^2 = 4(5)(x-2)

(y-3)^2 = 20(x-2)

Answer:

Having trouble using logarithmic differentiation!

Answer:

Not sure for 1. Area might be 144. Perimeter might be 50. I got perimeter by finding slant height of the parallelogram and then substituting it to the perimeter formula (P=2(a+b) where a is a side and b is a base). I found area by just multiplying 12*12 since to find area of parallelogram, it is base x height.

2. 45, 135, 135

Step-by-step explanation:

2. We know that an isosceles trapezoid has congruent base angles and congruent upper angles, so if one base angle measures 45 degrees, the other base angle will also be 45 degrees.

For the upper angles, we know that diagonal angles are supplementary, so 180- base angle 1 (45 degrees)= upper angle 1

180-45=upper angle 1

upper angle 1 = 135 degrees

Mentioned above, upper angles are congruent, so upper angles 1 and 2 will be 135 degrees.

Check: The sum of angles in a quadrilateral is equal to 360 degrees. We can use this to check if our answer is correct.

135+135=270 degrees (sum of upper angles)

45+45= 90 degrees (sum of base angles)

270+90=360

So the angle measures of the other three angles are 135, 135, and 45.

Hope this helps!

Answer:

28

Step-by-step explanation:

radius= 14

circumstances of tire=?

Based on given conditions, formulate

circumstances= 2 multiply radius

= 2 multiply by 14

= 28

The center of the face of a cube is the midpoint of the face and lies along the line that runs between the opposite vertices of the face.

This is the point of intersection of the two diagonals in a face. In other words, it is the point that is equidistant from all four corners of the face.

To visualize this, imagine dividing the face into four equal triangles by drawing lines from each corner to the center. The center of the face is at the intersection of these lines.

In three-dimensional space, the center of the face of a cube is also the center of the cube itself, as all faces of a cube are congruent (the same shape and size) and meet at the center of the cube.

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The mean of the sampling distribution of X is 18 and the standard deviation is approximately 3.00.

What is mean ?

Mean can be defined as ratio of number of favourable outcomes , total number of outcomes.

The population proportion of people who do not wear seat belts is 0.1 or 10%. We can assume that the sample is randomly selected and that the sample size is small enough relative to the population that we can use the binomial distribution to model the number of people who do not wear seat belts.

The mean of the sampling distribution of X is:

μ = np = 180 × 0.1 = 18

where n is the sample size and p is the population proportion.

The standard deviation of the sampling distribution of X is:

σ = sqrt(np(1-p)) = sqrt(180 × 0.1 × 0.9) ≈ 3.00

where sqrt() represents the square root function.

Therefore, the mean of the sampling distribution of X is 18 and the standard deviation is approximately 3.00.

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Answer:

Step-by-step explanation:

You want the inequalities and graph representing the given scenario regarding a boy's buying plans for apples and mangoes.

The problem statement tells us to use 'a' to represent the number of apples, and 'm' to represent the number of mangoes the boy buys. His constraints are ...

  a ≥ 5 . . . . . . . . he buys at least 5 apples

  m ≥ 5 . . . . . . . he buys at least 5 mangoes

  5a +3m ≤ 75 . . . . he spends at most 75

  5a -3m ≥ 5 . . . . . he spends at least 5 more on apples

Using x and y for 'a' and 'm', the graph is attached. The corners of the feasible region have their vertices identified. The feasible region is the area overlaid by 4 shadings.

(i) The maximum number of apples he can buy is 12 (lower right corner)

(ii) The maximum number of mangoes he can buy is 11 (nearest integer to the top vertex)

__

Additional comment

When there are this many inequalities, it sometimes works well to reverse them when graphing. That way, the feasible region is white, and the non-feasible areas are shaded.

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The area of the isosceles triangle is 60 square units

The formula for area of an isosceles triangle is expressed as;

Area = bh/2

Where;

Now, let's find the height of the triangle.

Using Pythagorean theorem, we have;

13^2 = 5^2 + h^2

Find the square

169 = 25 + h^2

collect like terms

169- 25 = h^2

h^2 = 144

Find the square root of both sides

h =√ 144

h = 12

Let's find the area

Area = 10 × 12/2

Area = 120/2

Area = 60 square units.

Thus, the area of the isosceles triangle is 60 square units

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