There are 4 proofs and statements please give them. If you aren't sure please don't answer. Given AC=BD, and AB and CD bisect each other. Prove: <A= <B​

Answer:

12+2x=46     x=17 cookies

Step-by-step explanation:

First you are going to double the number of students because each student is getting 2 cookies. Then you will subtract 12 from 46 and that gets you 34. Then you will divide 2 by 34 to get how many cookies she needs to bake. 17 more cookies. To check your work plug in 17 by the x. so 2 times 17 is 34 plus 12 is 46 so that answer is correct.

A result is called "statistically significant" when the p-value is less than the significant level, typically 0.05.

This means that there is less than a 5% chance that the results are due to chance alone, and suggests that there is a real effect present in the data.

The Null Hypothesis is the assumption that there is no significant difference between the measured phenomenon and a certain value or set of values. A statistically significant result means that the observed data are inconsistent with the assumption of no difference, or no effect.

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Answer:

The answer is 1 1/4

Step-by-step explanation:

solve by making a ratio!

(2 1/4 cups)/ (1 4/5 hrs)

to find how many cups he can drink in 1 hr, divide both the numerator and denominator by 1 4/5.

(5/4 cups)/ (1 hr)

the question asks for a mixed number. convert 5/4 to a mixed number.

5/4= 1 1/4

one slice of pizza is $3.75

Step-by-step explanation:

first write out 2 simultaneous equations from thr given information.

fries=f and pizza=p

4p+2f=21

2p+3f=16.5

and solve from there through either the substitution method or elimination. hope this helps

Angles 13 and 5 are the opposing exterior angles to angle 11.

If two angles are on the exterior side of parallel lines and lie on the opposite sides of the transversal line, they are said to be alternate exterior angles.

The fact that r and t are parallel to one another is a given.

The angles 13 and 5 are on the outside side of parallel lines in the illustration, and they are located on the opposite sides of the transverse line..Angles 13 and 5 are hence complementary outer angles to angle 11.

If two angles are on the exterior side of parallel lines and lie on the opposite sides of the transversal line, they are said to be alternate exterior angles.

The fact that r and t are parallel to s and u  is a given.

r║s and t║u. The angles 13 and 5 are on the outside side of parallel lines in the illustration, and they are located on the opposite sides of the transverse line.

Therefore, Angles 13 and 5 are hence complementary outer angles to angle 11.

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Answer:

12ft

Step-by-step explanation:

lets find the area of the triangle first;

area=1/2×b×h

1/2×32×9=144ft²

area of square= s²

√144

=12 feet

To determine the number of beads that contain at least two different colors, subtract the number of beads that contain only one color from the total number of beads.

1. Calculate the number of beads that contain exactly one color:

2. Calculate the total number of beads:

3. Subtract the number of beads that contain only one color from the total number of beads to find the number of beads with at least two different colors:

Let's take an example to illustrate this:

Suppose there are 4 different colors available (n = 4), and there are a total of 100 beads (m = 100).

Calculate the number of beads that contain exactly one color:

Number of beads with exactly one color = n * n = 4 * 4 = 16.

Calculate the number of beads with at least two different colors:

Number of beads with at least two different colors = Total number of beads - Number of beads with exactly one color.

Number of beads with at least two different colors = 100 - 16 = 84.

So, in this example, there are 84 beads that contain at least two different colors.

In general, to find the number of beads that contain at least two different colors, subtract the number of beads with exactly one color from the total number of beads, using the formula derived in steps 1 and 2.

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Answer:

The slope is -3

Step-by-step explanation:

y=-3x-9

Answer:

Step-by-step explanation:

The sum of interior angles in a triangle is equal to 180 degrees

so

70 + 35 + x = 180 add like terms

105 + x = 180 subtract 105 from both sides

x = 75

Answer:

75  degrees

Step-by-step explanation

triangles add up to 180 degrees so, 70+35= 105 degrees, 180-105= 75 degrees

The amount of gas in a balloon is proportional to the volume of the balloon, with the constant of proportionality being 4/3π.

The amount of gas in a balloon is proportional to the volume of the balloon. In this case, the volume is given by the formula V = (4/3)πr^3, where r is the radius of the balloon.

To determine the constant of proportionality, we need to find the factor by which the volume changes when the amount of gas increases or decreases. Let's assume the initial volume of the balloon is V1 and the corresponding radius is r1. If the amount of gas increases by a factor of k, then the new volume will be V2 = kV1.

Using the formula for volume, we have (4/3)πr2^3 = k[(4/3)πr1^3]. Canceling out the common factors, we get r2^3 = kr1^3.

Since the radius is directly proportional to the cube root of the volume, we can conclude that the amount of gas in the balloon is directly proportional to the cube of the radius.

The constant of proportionality is k, which represents the factor by which the volume changes when the amount of gas changes. In this case, k can be any positive constant value since the relationship is linear.

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Answer:

I need the answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

The sample is the part of the population that somebody wants to study. therefore, the sample is the 100 male students interviewed

Therefore, there is no function f such that F = ∇f.

To determine if the vector field \(F(x, y, z) = yze^xzi + e^xzj + xyexzk\) is conservative, we can check if the curl of F is zero.

The curl of F is given by ∇ × F, where ∇ is the del operator.

\(∇ × F = (d/dy)(xye^xz) - (d/dz)(exz) i + (d/dz)(yzexz) - (d/dx)(exz) j + (d/dx)(e^xz) - (d/dy)(xye^xz) k\)

Evaluating the partial derivatives, we get:

\(∇ × F = (xe^xz + 0) i + (0 - 0) j + (0 - xe^xz) k\\∇ × F = xe^xz i - xe^xz k\\\)

Since the curl of F is not zero, the vector field F is not conservative.

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The standard deviation of all speeds is approximately 7.98 km/hour.

To solve this problem, we need to use the properties of the normal distribution. We know that the speeds of automobiles are normally distributed with a mean of 100 km/hour. Let's call the standard deviation of all speeds "s".

We also know that 3% of the automobiles travel faster than 115 km/hour. This means that the speed of these automobiles falls in the top 3% of the distribution.

Using a standard normal distribution table or calculator, we can find the z-score that corresponds to the 97th percentile (since 100% - 3% = 97%). This z-score is approximately 1.88.

We can use the formula for a z-score to find the actual speed of the automobiles that travel faster than 115 km/hour:

z = (x - μ) / s

1.88 = (115 - 100) / s

Simplifying this equation, we get:

s = (115 - 100) / 1.88

s = 7.98

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Answer:

h = -3y + 2x

Step-by-step explanation:

Add 4x to both sides of the equation.

2h = −6y + 4x

Divide each term in 2h = −6y + 4x by 2 and simplify.

Divide each term in 2h = −6y + 4x by 2.

2h/2 = -6y/2 + 4x/2

Simplify the left side.

h = −6y/2 + 4x/2

Simplify the right side.
Simplify each term.
Cancel the common factor of −6 and 2.

h = -3y+2(2x)/2

Cancel the common factors.
Factor 2 out of 2.

h = -3y+2(2x)/2(1)
Cancel the common factor

h = -3y+2(2x)/2(1)
Rewrite the expression
h = -3y + 2x/1

Divide 2x by 1.
h = -3y + 2x

hopefully its right LOLZ

This is an example of interviewer bias where the gender of the interviewer may have impacted the replies of the unmarried males in the poll.

This is an example of interviewer bias, where the gender of the interviewer may have influenced the responses of the unmarried men in the survey. The results may not accurately reflect the true opinions of the participants as their answers could have been affected by their desire to impress or please the interviewer.

This situation is an example of response bias, specifically interviewer bias, which occurs when the respondent's answer is influenced by the gender or characteristics of the interviewer, rather than their true preferences or opinions.

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Answer:

84 cm

Step-by-step explanation:

Area=a, length=l, width=w

\(A=lw\)

If area is 5376 cm², and width is 64 cm,

\(5376=64l\)

Divide each side by 64,

\(l=84\)

So, the length of the rectangle is 84 cm.

A valid conclusion is one that naturally follows from informed, formulated hypotheses, prudent experimental design, and accurate data analysis.

If an argument is invalid, then it must have at least one false premise. If an argument has a conclusion that is certainly false, then the argument must be invalid. If the premises and conclusion are all false, the argument must be invalid.

A biased sample occurs when the group selected for a statistical study or survey is not random and doesn't properly represent the larger population. This is a result of sampling bias which occurs when the sample of the population is not representative of the population at large.

If an overestimate or underestimate does happen, the mean of the difference is called a “bias.” In more mathematical terms, an estimator is unbiased if: That's just saying if the estimator (i.e. the sample mean) equals the parameter (i.e. the population mean), then it's an unbiased estimator.

Cohort studies are an appropriate study design when: (1) there is good evidence to suggest an association between an exposure and an outcome (perhaps through prior cross-sectional studies); (2) the interval between exposure and development of the outcome is relatively short to minimize loss to follow-up; and (3) the outcome is not too rare (so that the size of the cohort is reasonable).

Hence,

No actual study was done, only observation.

From the above explanation, we can say that

The conclusion drawn from the study is not valid because the sample is Biased.In this instance, an inappropriate study was conducted

Answer:

C

Step-by-step explanation:

Looking at the graph, we can see that the graph crosses the y-axis at y=2.

Hence, our y-intercept should be 2.

Therefore, we can eliminate A.

We also notice that the graph is downwards sloping.

Therefore, our slope is negative.

So, we can eliminate B.

Therefore, our answer must be C.

Answer:

C

Step-by-step explanation:

I have the same question and my answer was right

Answer:

f(g(-2)) = 12

Answer: C.

Step-by-step explanation:

f(x) = - 1/2x² + 5x

g(x) = x² + 2

f(g(-2)) =

First, we evaluate g(-2).

g(x)= x² + 2

g(-2)= (-2)² + 2 = 4 + 2 = 6

Now we evaluate f(6).

f(x) = - 1/2x² + 5x

f(6) = - 1/2(6)² + 5(6) = - 1/2(36) + 30 = -18 + 30 = 12

Answer: f(g(-2)) = 12

Answer: 1/48

Step-by-step explanation:

Write 2.5/120 as a fraction , then rewrite it as 25/1200 simplify and get 1/48

Hope this helps!

Answer:

enlargement ; 2

Step-by-step explanation:

dilation is change in the size of the figure.

in the given scenario, figure's size is increasing so dilation is called enlargement and scale factor must be greater than 1.

scale factor = dimension of new shape / dimension of original shape

let's calculate the difference in terms of boxes of both figures to calculate the scale factor,

scale factor = 6/3

thus, in the given dilation we have enlargement of 2

-5√3  - 11 is value of expression.

What do math Surds mean?

( 2 + √3) (√3 - 7)

First = 2√3

outer = 2(-7) = -14

inner = √3 √3 = 3

last = √3 (- 7)

= 2√3 + (- 14) + 3 + ( - 7√3)

= -5√3  - 11

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The score 3 months ago was 4.130.

What is rate of increase?

Rate of increase is defined the change in rate that describes how one quantity changes in relation to another quantity.

Assume the score 3 months ago was x. This means that the above can be expressed as:

Current score = x × ( 1 + rate) ^ number of months

5.20= x(1+8%)^3

5.20 = x(1.259)

x= 5.20/1.259

x= 4.130

therefore, the score was 4.130

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The required answer is the double declining-balance method is $9,840.

To calculate the depreciation expense for 2020 using the double declining-balance method, we first need to determine the asset's straight-line depreciation rate. This is calculated by subtracting the residual value from the cost of the asset and dividing by the asset's useful life:

Depreciation base = $30,000 - $3,000 = $27,000
Annual depreciation expense (straight-line) = Depreciation base / Useful life = $27,000 / 5 = $5,400

Next, we need to determine the double declining-balance rate, which is twice the straight-line rate. Therefore:
Double declining-balance rate = 2 x (1 / Useful life) = 2 x (1 / 5) = 0.40 or 40%
Now we can calculate the depreciation expense for 2020:
Depreciation expense (2020) = Book value (beginning of year) x Double declining-balance rate

The book value at the beginning of 2020 would be the cost of the asset minus accumulated depreciation for the first year:
Book value (beginning of 2020) = $30,000 - ($5,400 x 1) = $24,600
As a result, depreciation increases during the initial year of possession and decreases thereafter.

Therefore:

Depreciation expense (2020) = $24,600 x 0.40 = $9,840

So the amount of depreciation expense for 2020, the second year of the asset's life,

using the double declining-balance method is $9,840.

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The answer is C. Not enough information to determine.

To understand which stock should have the highest expected return, we need more information about the stocks and the market. Standard deviation and beta are risk measures but do not directly provide information about expected return.
Standard deviation measures the dispersion of a stock's returns, with a higher standard deviation indicating greater volatility. Beta measures a stock's sensitivity to market movements, with a higher beta indicating greater responsiveness to market changes.
While risk and return are often positively correlated, meaning that higher risk investments typically offer higher potential returns, we cannot determine the expected return of these stocks based solely on their standard deviation and beta values. We would need additional information about the stocks, such as their historical returns or dividend yields, as well as the overall market conditions, to make an informed decision on which stock has the highest expected return.

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The equation representing the cost of a bag is 2x + 18 = $68 and for each bag Britney has to pay $25.

Let us consider  'x' be the total cost representing amount of money to check each bag under the weight limit.

Additional amount to pay per bag for over weight limit is equal to $9

Total amount paid by Britney to check both the bags = $68

Equation represents the cost of bags is equal to :

2x + 2(9) = $68

⇒ 2x + 18 = $68

⇒ 2x = $68 - $ 18

⇒ 2x = $50

⇒ x = $50 / 2

⇒ x = $25

Therefore, the equation which represents the cost of a bag is 2x + 18 = $68 and cost for each bag is $25.

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Answer:

10(6)

Step-by-step explanation:

Hope it's right.....

Mr. Moore needs 13.5 cubic feet of soil to fill the planter box.

To calculate the volume of the rectangular prism planter box, we need to multiply the length, width, and height of the box.

Volume = length x width x height

V = 4.5 ft x 2 ft x 1.5 ft

V = 13.5 cubic feet

Therefore, Mr. Moore needs 13.5 cubic feet of soil to fill the planter box.

It is important to note that the volume of the box represents the amount of space inside the box and does not take into account any obstructions or irregularities that may be present inside the box.

Thus, the actual amount of soil required may be slightly different from the calculated value. Additionally, it is always a good idea to add some extra soil to account for settling and to ensure that the planter box is completely filled.

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