if a hand sanitizer cleans 99.9% of bacteria if u use it 2 times does that make it 100%

The side of a square is 2 cm and semicircles are constructed on each side of square then the area of the whole figure is A) (4+2π)cm

We are given the side of square is 2 cm.

Then the area of square =2×2=4

And Semi circle are constructed on each side.

Then four sides of square constructed four semi circles of radius half of side of square=1 cm

Then area of one semicircle= 21 π(1) 2 = 2π sq cm

So area of four semicircle=4× 2π =2π sq cm

So total area of figure = 4+2π sq cm

The side of a square is 2 cm and semicircles are constructed on each side of square then the area of the whole figure is A) (4+2π)cm

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Answer:

true i think

Step-by-step explanation:

The length of the line segments m and n which are halves of the diagonals AC and BD in the parallelogram ABCD are 6 and 11 respectively.

A parallelogram is a quadrilateral, and the diagonals always bisect each other. However, diagonals only form right angles if the parallelogram is a rhombus or a square.

For the parallelogram ABCD; the lines AC and BD are its diagonals, and they both bisect each other, that is they cut each other to form two equal parts.

So AP and PC are equal halves of the line AC, while BP and PD are equal halves of the line BD

Therefore, since PC = 6 then m = 6, and for PD = 11, then n = 11 because they form diagonals of the parallelogram ABCD.

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Evaluating x = sin^(-1)(3/5) expression using a calculator or trigonometric table will give the value of x in degrees.

To find the value of x in the given triangle with base side labeled 4, vertical leg labeled 3, and hypotenuse labeled 5, we can use the trigonometric expression involving the sine function.

The sine function relates the ratio of the length of the vertical leg to the length of the hypotenuse in a right triangle. In this case, we have:

sin(x) = opposite/hypotenuse = 3/5

Therefore, the trigonometric expression that can be used to find the value of x is: sin(x) = 3/5

By taking the inverse sine (also known as arcsine or sin^(-1)) of both sides of the equation, we can solve for x:

x = sin^(-1)(3/5)

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Answer:

Step-by-step explanation:

In numerical order:

      \(1\frac{2}{3},1\frac{3}{4}\)

Since there are only 2 scores the median(middle score)  will be the same as the mean:

     \((1\frac{2}{3}+ 1\frac{3}{4}) \div 2=(\frac{20}{12}+ \frac{21}{12}) \div 2=\frac{41}{12} \times \frac{1}{2} =\frac{41}{24}=1\frac{17}{24}\)

Answer:

35.71

Step-by-step explanation:

The expression of "21 equal negative 3 over 4 y" in algebraic notation is 21 =-3/4y

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

21 equal negative 3 over 4 y

negative 3 over 4 y means -3/4y

So, we have the following

21 equal -3/4y

equal means =

So, we have

21 =-3/4y

Hence, the expression in algebraic notation is 21 =-3/4y

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Therefore, the standard deviation of the data set is approximately 4.14.

The standard deviation is calculated by taking the square root of the variance, which is the sum of the squared deviations divided by the sample size minus 1.

So, first we need to calculate the variance:

variance = sum of squared deviations / (sample size - 1)

variance = 103 / (7 - 1)

variance = 17.17

Now we can find the standard deviation:

standard deviation = √(variance)

standard deviation = √(17.17)

standard deviation = 4.14 (rounded to two decimal places)

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Answer:

6 months

Step-by-step explanation:

So the computer is $1,083 and he makes a down payment of 20% meaning he gobies the company 20% of the cost and agrees to pay $144.4 every month.

So if he payed 20% of that which is $216.6.

He only has $866.4 left to pay.

We can divide 866.4 by 144.4 to find the amount of months it will take for him to pay it off which is 6 months.

He will take 6 months to finish paying.

A percentage is a number or ratio that can be expressed as a fraction of 100.

Here, given that,

Omari buys a computer for $1083.

He makes a down payment of 20%. & He pays $144.40 per month to finish paying for the computer.

Now, we have, the computer is $1,083

and he makes a down payment of 20% meaning he gobies the company 20% of the cost

and agrees to pay $144.4 every month.

So, he is paying, $1083×20% =$216.6

Now, we get,

He only has $866.4 left to pay.

We can divide 866.4 by 144.4 to find the amount of months it will take for him to pay it off

i.e. 866.4/144.4=6

Hence, required time is 6 months.

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Answer:

Jared transfers $55 to his checking account from his savings account.

Jared spends $55 from his checking account to purchase a college Algebra textbook

Jared withdraws $55 from his checking account

Hope this helps!

Applying the definition of bisection, m<ABD = 24°; m<CBD = 24°; m<ABC = 48°.

When an angle is bisected by a line segment, it means it divides the angle into two equal parts.

The angles addition postulate state that the sum of the two angles formed when an angle is bisected is equal to the measure of the angle that was bisected.

Given:

BD divides ABC into two equal angles, angles ABD and CBD.

Therefore:

m<ABD + m<CBD = m<ABC [angles addition postulate]

m<ABD = m<CBD [definition of bisector]

Substitute

3x + 6 = 7x - 18

Combine like terms

3x - 7x = -6 - 18

-4x = -24

-4x/-4 = -24/-4

x = 6

m<ABD = 3x + 6 = 3(6) + 6 = 24°

m<CBD = 7x - 18 = 7(6) - 18 = 24°

m<ABC = m<ABD + m<CBD

m<ABC = 24 + 24 = 48°

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Answer

x = 71°

Explanation

The sum of angles in a triuangle is 180°

So, we can sum these three angles up and equate them to 180°

x - 5° + x + x - 28° = 180°

3x - 33° = 180°

3x = 180° + 33°

3x = 213°

Divide both sides by 3

(3x/3) = (213°/3)

x = 71°

Hope this Helps!!!

The variation in bone mineral density can be determined by calculating the coefficient of determination (r2). The formula for r2 is given by r2=1-(∑residuals)/(∑total).

To calculate the coefficient of determination, you will need to first calculate the linear regression equation by determining the slope (m) and y-intercept (b). Then, plug the values into the equation of the line: y=mx+b. Finally, calculate the residuals and total sums, and plug the values into the formula for r2 to get your answer. In this case, the percentage of variation in bone mineral density accounted for by colas consumed in this model is approximately 85.5%.

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Answer:

Your answers are:

A, B and C

Step-by-step explanation:

So 12 over 3 is equal to 4 which is a Whole number. meaning Not a fraction, an Integer is a whole number (not a fractional number) that can be positive, negative, or zero. Rational numbers would include this example as well

Hope this helped have a wonderful day/night/afternoon

Answer:

1/c2

Step-by-step explanation:

The given polynomial is: x + 9x + 14,  the correct option is

OA = (x + 7)(x + 2)

OB = (2x + 7)(x + 2)

the polynomial is not prime.

We have to factor the given polynomial completely.To factor the given polynomial completely, first we need to add 1 and 14 that are factors of 14 and whose sum is 9.

x + 9x + 14

= (x + 7)(x + 2)

Hence, the given polynomial completely factored as

(x + 7)(x + 2)

Therefore,

OA

= (x + 7)(x + 2)

OB

= (2x + 7)(x + 2)

Therefore, the correct option is

OA

= (x + 7)(x + 2)

OB

= (2x + 7)(x + 2)

the polynomial is not prime.

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Answer:

1/36

Step-by-step explanation:

P=(1/6)(1/6)=1/36

Answer:

7.4

Step-by-step explanation:

The probability that Jeff wins exactly 1 prize is (3/4)³

According to the question,

A fast-food restaurant runs a promotion in which certain food items come with game pieces

Let the event of winning the game piece be A and x be the random variable for winning prize

So, Probability of Winning the game = P(A) = p = 1/4

Probability of not winning = q = 1 - 1/4

=> q = 3/4

Using Binomial distribution,

The Probability that he wins exactly 1 prize = P(x = 1)

=> P(x) = ⁿCₓ pˣ qⁿ⁻ˣ

Here, n = 4 , x = 1

P(1) = ⁴C₁ p¹ q³

=> 4 × (1/4)( 3/4)³

=> (3/4)³ is probability that jeff wins exactly 1 prize

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Answer:

433345344 Answer

Step-by-step explanation:

Answer:

47 degrees

Step-by-step explanation:

A triangle’s degrees add up to 180, so we can use that theorem

102 + 31 + x = 180

133 + x = 180

x = 47 degrees

The smallest possible value for the sum of the 81 draws is 411.

To find the smallest possible value of the sum of the 81 draws, we need to minimize the value of each individual ticket. Since we have six tickets with values of 2, 9, 5, 6, 4, and 4, we can assume that each ticket will be drawn 13 or 14 times (since 13 x 6 = 78 and 14 x 6 = 84).

To minimize the sum of the draws, we want to have as many tickets with a value of 2 and 4 as possible. Let's assume that we have 14 draws for each ticket except for the 9 (which we will assume is drawn 13 times).

So, our calculation would be:

(2 x 14) + (9 x 13) + (5 x 14) + (6 x 14) + (4 x 14) + (4 x 14) = 28 + 117 + 70 + 84 + 56 + 56 = 411

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Answer:

5

Step-by-step explanation:

2 negatives always equal a positive.

We have to convert 4 1/3 into a improper fraction which is 13/3. Since we know 2 negatives equal a positive, we add both fractions. 13/3 + 2/3 ewuals 15/3 which equals 5.

Answer: 1.062

Step-by-step explanation:

Answer:

1.062

Step-by-step explanation:

mark brainlist plz thx

Step-by-step explanation:

3x-5+23x-9

26x-5-9=26x-14

2(13x-7)

Answer :

C

Step-by-step explanation:

3x – 5 + 23x – 9 = 26x - 14

2 . 13x = 26x

2. -7 = -14

2 ( 13x -7) so answer is C

or another way :

a. 2(14x -6)  = 28x - 12

b. 3x(13x-6)  = 39x² - 18x

c. 2(13x -7)  = 26x - 14

d. 3x(13x - 5) = 39x² -15x

so answer is C

Hope this helps ^-^

The function f can be implemented using a single 4-to-1 multiplexer and two inverters.

A 4-to-1 multiplexer is a digital logic component that selects one of four input signals based on the select lines. It has four data inputs (D0, D1, D2, D3), two select lines (S0, S1), and one output (Y). By properly connecting the inputs and select lines, we can realize the desired function f.

To implement the function f using a single 4-to-1 multiplexer and two inverters, we need to carefully assign the input signals and select lines to achieve the desired behavior. The truth table of the function f will guide us in determining the appropriate connections.

First, we can use the inverters to complement the required inputs if needed. Then, we can connect the complemented and uncomplemented inputs to the select lines of the multiplexer. The output of the multiplexer will be the result of the function f.

By carefully selecting the input assignments and connections, we can effectively implement the function f using a single 4-to-1 multiplexer and two inverters. This approach offers a compact and efficient solution for realizing the desired logic function.

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Answer:

Todd's

Step-by-step explanation:

Given the expression x^2+6x+5=8, we are to determine which whether Imani or Todd method will work

Imani method might not work because he hasn't written the equation in standard form before factorizing. He should have equated the expression to zero first before factorizing and finding the zeros of the expression. The equation should have been written in the form ax²+bx+c = 0 first.

For Todd, his method will work because he used the completing the square method. The value at the right hand may not necessarily be zero before applying the rule. The idea is to make the quadratic equation complete and a perfect square.

This is achieved by adding the half of coefficient of x to both sides of the expression before simplifying.

From the expression x²+6x+5 = 8 we can see that adding 4 to both sides will make the quadratic equation on the left a perfect square.

x²+6x+5= 8

x²+6x+5+4= 8 +4

x²+6x+9 = 12

x²+3x+3x+9 = 12

x(x+3)+3(x+3) = 12

(x+3)(x+3) = 12

(x+3)² = 12

We can see that the expression at the left hand is now a perfect square. Hence Todd solution strategy will work

Answer:

only todd i got it from khan

Step-by-step explanation:

Since the subspace W spanned by the given vectors u1, u2, and u3 is the entire space R^4, the projection of the vector y onto W is simply y itself. Therefore, we can write y as the sum of a vector in W (y) and a vector orthogonal to W (0), resulting in y = y + 0.

To write y as the sum of a vector in W (subspace spanned by the u's) and a vector orthogonal to W, we can use the concept of projection.

First, let's find a basis for W by determining which of the u's are linearly independent. By examining the given vectors u1, u2, and u3, we can see that they are linearly independent. Therefore, the subspace W spanned by the u's is the entire space R^4.

Next, we need to find the projection of y onto W. The projection of a vector onto a subspace is the closest vector in that subspace to the given vector. Since W is the entire space R^4, the projection of y onto W is simply y itself.

Therefore, we can write y as the sum of a vector in W and a vector orthogonal to W as follows:

y = y + 0

In other words, y can be expressed as the sum of itself (a vector in W) and the zero vector (a vector orthogonal to W).

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The value of x is; x = 17.48.

Here, we have,

from the given diagram, we get,

there is a right angle triangle.

we have to find the value of x.

we know that,

Let the angle be θ , such that

sin θ = opposite / hypotenuse

here, we get,

sin 39 = 11/x

so, we have,

0.6293 = 11/x

so, x = 17.48

Hence, The value of x is; x = 17.48.

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