The recommended daily intake of vitamin C for males 18 years and older is 90 milligrams. If an 18 year-old male has already consumed 36 milligrams of vitamin C, what percentage of the daily recommended amount has he already consumed?

ANSWER AT THE BOTTOM

Question:

There is a bag with 1 red pen, 4 black pens, and 3 blue pens. If 2 pens are chosen from the bag without replacement, what is the probability that you chose 2 black pens.

Explanation:

Right now there are a total of 8 pens. 4 of them are black. So, the probability of choosing a black pen right now is 4/8, or 1/2.

Lets assume we picked a pen and got black.

Now there are only 7 pens in the bag, and only 3 of them are black. The probability of choosing a black pen right now is 3/7.

So on the first draw, the probability is 1/2

And on the second draw, the probability is 3/7

To find the probability of 2 ocurrences happening in a row, we must multiply their individual probabilities.

For example, if we wanted to find the probability of rolling two 6's in a row on a dice, we would need to mutiply the individual probability together. The probability of rolling one 6 is 1/6, so the probability of rolling two 6's in a row is 1/6 MULTIPLIED BY 1/6, which is 1/36.

The probability of rolling two 6's in a row is 1/36.

Lets apply the same principle to our situation right now.

So on the first draw, the probability is 1/2

And on the second draw, the probability is 3/7

1/2 MULTIPLIED BY 3/7    =    3/14

3/14 in decimal form is 0.21

ANSWER:

0.21, OR 21%

Answer:

150

Step-by-step explanation:

First, we can simplify 5³:

5³ = 5 × 5 × 5 = 125

Then, we can simplify 4²:

4² = 4 × 4 = 16

Next, we can simplify √81:

√81 = √(9 × 9) = 9

Finally, we can add these simplified values:

5³ + 4² + √81

= 125 + 16 + 9

= 150

_____

Note:

An exponent shows how many times its base (the big number next to it) should be multiplied by itself.

A square root gives the number that is multiplied by itself to get the number under the root sign.

Question contains answer itself let's see how

x+y=-2

2x+y=1

See we are already given these two graphs .

The intersection point of both lines is the solution.

That's

In a case whereby agroup of bikers went to DSB for a 3 hour trip. For the first 2 hours, they traveled 18 km North and during the last hour,  the groups total distance is  15 km/h.

50 kilometers was covered in the first three hours.

10 kilometers have been traveled in the last hour.

T = 3 hours plus 1 hour equals 4 hours.

Traveled distance equals 60 km (50 km plus 10 km).

The ratio of total distance traveled to total time taken is known as the average speed.

Average speed can be calculated as (total distance travelled)/(total time taken)

=60/4

Hence, Average speed = 15 km/h

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Answer:

Inequality

Step-by-step explanation:

An expression is a mathematical phrase that contains numbers, variables, or both. Expressions never have an equal sign. An equation is a mathematical sentence that says two expressions are equal.

a) The transition matrix from C to B is [1 0 0], [0 1 0], [0 0 1] b) The transition matrix from C to B is [1 0 0], [0 1 0], [0 0 1] c) p(x) = a + bx + cx² as a linear combination of the polynomials in C can be defined as p(x) = a + b + c(x - 1)²

(a) Finding the transition matrix from C to B

To find the transition matrix from C to B, we need to express the vectors in the basis C as linear combinations of the vectors in basis B.

Let's express each vector in basis C in terms of basis B

1 = 1(1) + 0(x) + 0(x²)

(2 - 1) = 0(1) + 1(x) + 0(x²)

(x - 1)² = 0(1) + 0(x) + 1(x²)

The coefficients of the linear combinations are the entries of the transition matrix from C to B. Thus, the transition matrix is

[1 0 0]

[0 1 0]

[0 0 1]

(b) Finding the transition matrix from B to C:

To find the transition matrix from B to C, we need to express the vectors in the basis B as linear combinations of the vectors in basis C.

Let's express each vector in basis B in terms of basis C

1 = 1(1) + 0(2 - 1) + 0((x - 1)²)

x = 0(1) + 1(2 - 1) + 0((x - 1)²)

x² = 0(1) + 0(2 - 1) + 1((x - 1)²)

The coefficients of the linear combinations are the entries of the transition matrix from B to C. Thus, the transition matrix is

[1 0 0]

[0 1 0]

[0 0 1]

(c) Writing p(x) = a + bx + cx² as a linear combination of the polynomials in C

To write p(x) = a + bx + cx² as a linear combination of the polynomials in C, we need to express the polynomial p(x) in terms of the basis C.

We have the basis C = {1, (2 - 1), (x - 1)²}

p(x) = a + bx + cx² = a(1) + b(2 - 1) + c((x - 1)²) = a + b(2 - 1) + c((x - 1)²)

Thus, the polynomial p(x) = a + bx + cx² can be written as a linear combination of the polynomials in C as

p(x) = a + b(2 - 1) + c((x - 1)²)

Simplifying further

p(x) = a + b + c(x - 1)²

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Answer:

12.56 square feet

Answer:

2=x

Step-by-step explanation:

x+5=⅔x

x+5-3=2x/3-3

x+2=2x

x-x+2=2x-x

2=x

\(\longrightarrow{\green{x\:=\:-15}}\) 

Step-by-step explanation:

\(x + 5 = \frac{2x}{ 3} \\ \\⇝3 \: (x + 5) = 2x \\ \\⇝3x + 15 = 2x \\ \\⇝3x - 2x = - 15\\ \\ ⇝x = - 15\)

To verify:

\(x + 5 = \frac{2x}{3} \\ \\⇝ - 15 + 5 = \frac{2 \times ( - 15)}{3} \\ \\⇝ - 10= \frac{ - 30}{3} \\ \\⇝ - 10 = - 10 \\ \\⇝L.H.S.=R. H. S\)

\(\boxed{Hence\:verified.}\)

\(\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35}}}}}\)

the answer is -20 -15 -10 -5 -0

Answer:

y2= -15, y3=-10, y4=-5

Step-by-step explanation:

so basically, the answers have to decrease/increase by the same amount. idrk what else to say but those should be right.

The chores overshadowed the joy of our Reunion, learned a valuable lesson about managing time and prioritizing obligations

Embarking on a bike ride to visit a friend who lives 3 miles away, little did I know that a looming sense of forgotten chores would soon disrupt my plans. Determined to fulfill my obligations, I mustered the strength to continue riding towards my friend's house, albeit with a heavy heart.

I pedaled towards my destination, the weight of my impending chores grew heavier with each passing moment. Thoughts of unfinished tasks occupied my mind, and I knew that I couldn't stay for long once I reached my friend's place. However, in my haste, a newfound urgency propelled me forward, and I found myself pedaling at a speed 5 mph faster than my initial journey.

With this increased velocity, the return trip promised to be swifter, yet time was slipping away. My mind raced as I calculated the implications of my predicament. The total round trip, comprising both the journey to my friend's house and the hurried return, needed to be accomplished within a tight time frame of 30 minutes.

As I approached my friend's house, I realized that I had no choice but to deliver my news swiftly and immediately turn back around. The momentary joy of reunion would be overshadowed by the pressing chores that awaited me. Regrettably, I bid my friend a hasty farewell, explaining the circumstances that compelled my premature departure.

Once on my bike again, I kicked up the pace, utilizing the extra speed to my advantage. The wind rushed past my face as I hurriedly retraced my path, pushing myself to complete the return trip as swiftly as possible. The seconds ticked away relentlessly, as the pressure mounted to make it back within the allocated timeframe.

In a flurry of determination, I managed to reach home just in the nick of time, fulfilling my duties and responsibilities. Exhausted but relieved, I contemplated the whirlwind of events that had transpired within the span of this half-hour adventure.

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Note the question be like :

A company is hosting a team-building event and has allocated a total of 4 hours for various activities. If Activity A takes 1 hour, Activity B takes 2 hours, and Activity C takes 45 minutes, what is the maximum amount of time that can be dedicated to Activity D while still staying within the allocated 4-hour timeframe?

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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A point on the rim of a wheel with a radius of one meter will travel 219.8 meters if the wheel makes 35 rotations.To find the distance traveled by a point on the rim of a wheel, we need to first calculate the circumference of the wheel. The circumference is equal to the diameter of the wheel multiplied by pi (π).

However, since we are given the radius of the wheel, we can simply multiply the radius by 2 and then by pi to get the circumference.

The formula for calculating the circumference of a circle is:

Circumference = 2 × pi × radius

C = 2 × pi × r

C = 2 × 3.14 × 1 (since the radius is given as one meter)

C = 6.28 meters

Now that we know the circumference of the wheel, we can easily calculate the distance traveled by a point on the rim of the wheel if it makes 35 rotations.

The formula for calculating the distance traveled by a point on the rim of a wheel is:

Distance = Circumference × number of rotations

D = C × n

D = 6.28 × 35

D = 219.8 meters

Therefore, a point on the rim of a wheel with a radius of one meter will travel 219.8 meters if the wheel makes 35 rotations.

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Answer:

10:5 OR 2:1

Step-by-step explanation:

Let x be the parts of 25% dextrose and

y be the parts of 10% dextrose are mixed so that

20% dextrose mixture is obtained.

amount of dextrose in the mixture will be 20% of (x+y).

We have to find the value of \(\frac{x}y \ OR\ x:y\)

Now, we can apply the concept that sum of amount of dextrose in the two liquids will be equal to the amount of dextrose in the mixture.

\(\Rightarrow x \times 25\% + y \times 10\%=(x+y)\times 20\%\\\Rightarrow x \times\dfrac{25}{100} + y \times \dfrac{10}{100}=(x+y)\times \dfrac{20}{100}\\\Rightarrow x \times25 + y \times 10=(x+y)\times 20\\\Rightarrow 25x + 10y=20x+20y\\\Rightarrow 25x -20x =20y-10y\\\Rightarrow 5x=10y\\\Rightarrow \dfrac{x}{y} = \dfrac{10}{5}\\\Rightarrow \bold{x:y=10:5\ OR\ 2:1}\)

So, the answer is 10:5 or 2:1.

Answer:

4.90% is approximately the new Dextrose concentration.

Explanation:

Volume by Volume percent is given by ;

Volume percentage of dextrose solution = 5%

In 100 mL of solution 5 ml of dextrose is present.

Now, volume sterile water added was equal to the 40% of volume of dextrose volume.

So, volume of the sterile water added =  

Total volume of the solution after addition of water = 100 mL + 1 mL = 102 mL

New concentration of dextrose will be;

4.90% is approximately the new Dextrose concentration.

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Each x-value corresponds with only one y-value.

Answer:

the answer is 10% if it is simple interest you're talking about.

Answer:

26

Step-by-step explanation:

To get the inside measure of the line that 109 sits on, you will take the angle of the straight line (180) and substract 109.

180-109 = 71

this is the angle adjacent to 109

All angles in a triangle combined are 180

Substract all known angles and you get your answer

180-71-83 = 26

Answer:

-4 is the slope (m)

Step-by-step explanation:

Answer:

-4

Step-by-step explanation:

Answer:

x=0 y=-3

Step-by-step explanation:

Answer: y= -2x+9

Step-by-step explanation:

m is the increase each time the x axis goes up one

We can see that it goes down 2 every time so the m value is -2

the b value is the number when the x axis is at 0, we can see on the y axis this number is 9

The equation is:

y = -2x + 9

Work and explanation:

We should first find the slope of the graphed line.

Remember that :

\(\boldsymbol{m=\dfrac{rise}{run}}\)

rise = how many units we move up/down the y axis

run = how far we move on the x axis

The given slope goes "down 2, over 1" so:

That makes the slope:

\(\boldsymbol{m=-\dfrac{2}{1}}\)

If simplified, it gives us -2. So we have figured out the slope, m. Now, to figure out the y intercept, we should look at where the graphed line intercepts the y axis. This happens at (0, 9).

The y intercept is the second number; therefore the y intercept is 9.

Therefore, the equation is y = -2x + 9.

Answer:

14. EA, EB, EC, EG

15. AC, AD, AE, A F

Answer:

d. b^10

Step-by-step explanation:

Arun walked 5 km to east and then 12km to north. By joining the starting point and the end point by straight line we will get a right angled triangle, hypotenuse of which will tell how far is he from his starting point.

The square on the hypotenuse's area is equal to the sum of the two squares on the legs (a and b) (c). Pythagoras, a Greek philosopher who was born in 570 BC, is honored by having his theorem named after him. The theorem has already been shown more than once through various techniques, possibly greater than any other mathematical theorem. The hypotenuse side of a right-angled triangle's square is equal to the total of its other two sides, according to Pythagoras' Theorem. These right triangle three sides are known as the Perpendicular, Base, and Hypotenuse.

So Pythagoras theorem,

H²= 5² + 12²

H²= 25 + 144

H² = 169

H = 13

So, he will be 13 km far away from his starting point.

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The value of the expression tan(-5π/6) can be determined using trigonometric properties and  identities.

First, let's consider the unit circle. The angle -5π/6 is measured in the clockwise direction from the positive x-axis. In this position, the reference angle is π/6, which is the positive angle formed with the x-axis.

The tangent function (tan) is defined as the ratio of the sine (sin) of an angle to the cosine (cos) of the angle. Using the reference angle π/6, we can determine the value of tan(π/6) as the ratio of sin(π/6) to cos(π/6). sin(π/6) equals 1/2, and cos(π/6) equals √3/2. Therefore, tan(π/6) is (1/2) divided by (√3/2), which simplifies to 1/√3 or √3/3. Since tan is an odd function, tan(-5π/6) is equal to the negative of tan(5π/6). Therefore, tan(-5π/6) has the same value as -√3/3.

In conclusion, the value of tan(-5π/6) is -√3/3, which means that the tangent of the angle -5π/6 is negative and equal to the ratio of -√3 to 3.

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Finding the sum of two complex numbers, z₁ and z₂, geometrically on the complex plane, one can follow these steps:

1. Construct z₁ and z₂ as vectors on the complex plane. Treat the complex plane as a Cartesian coordinate system, where the real part of a complex number represents the x-axis and the imaginary part represents the y-axis.

2. Draw a vector from the origin (0,0) to z₁. This vector represents z₁.

3. Draw a vector from the origin to z₂. This vector represents z₂.

4. To find z₁ + z₂, place the tail of the second vector (representing z₂) at the head of the first vector (representing z₁). The resulting vector, starting from the origin and ending at the head of the second vector, represents the sum z₁ + z₂.

5. Measure the length of the resulting vector, which represents the magnitude of z₁ + z₂. You can also find the angle between this vector and the positive real axis, which represents the argument (phase) of z₁ + z₂.

To find z₁ - z₂ geometrically, one can as well follow a similar procedure:

1. Plot z₁ and z₂ as vectors on the complex plane.

2. Draw a vector from the origin to z₁. This vector represents z₁.

3. Draw a vector from the origin to z₂. This vector represents z₂.

4. To find z₁ - z₂, place the tail of the second vector (representing z₂) at the head of the first vector (representing z₁), but in the opposite direction. The resulting vector, starting from the origin and ending at the head of the second vector, represents z₁ - z₂.

5. Measure the length of the resulting vector, which represents the magnitude of z₁ - z₂. You can also find the angle between this vector and the positive real axis, which represents the argument (phase) of z₁ - z₂.

Do not forget to consider both the magnitude and the angle when determining the geometric representation of complex number addition and subtraction on the complex plane.

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Answer:

11

Step-by-step explanation:

The given functions are:

To solve for f(g(6)), first we need to find g(6):

So, f(g(6))=f(148), now find f(148):

The answer is f(g(6))=737

b. Find f(f(2)).

Start finding f(2):

Now, f(f(2))=f(7), solve for f(7):

The answer is f(f(2))=32

the given expression is'

y = 13x - 5

compare this equation with the standard equation

y = mx + c

here m is slope

so m = 13

thus, the slope of the equation is m = 13

The correct piecewise definition for the function y = |x + 5| - 2 is,

y = x + 3, for x ≥ -5 and y = - x - 7, for x < - 5.

We know the absolute value function of the modulus function always outputs a positive value irrespective of the sign of the input.

In piecewise terms  | x | = x for x ≥ 0 and | x | = - x for x < 0.

Given, y = | x + 5 | - 2.

Now, y = (x + 5) - 2, for x + 5 ≥ 0 and y = - (x + 5) - 2, for x + 5 < 0.

y = x + 3, for x ≥ -5 and y = - x - 7, for x < - 5.

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Answer:

32.87°

Step-by-step explanation:

It is asking for the measure of angle B.

\(tanB=\frac{opposite}{adjacent}\)

\(tanB=\frac{4.2}{6.5}\)

Now you need to find the arctan because you want the angle. (make sure your calculator is in degree mode)

B= arctan(4.2/6.5)

angle B= 32.86867893°

As the equation of tangent line is y = -3x, the value of slope, m is -3 and value of b is 0.

To find the equation of the tangent line at the point (π, -3π), we need to find the derivative of the function y = 3xcos(x), which is

y' = 3cos(x) - 3xsin(x)

and then evaluate the derivative at x = π to find the slope of the tangent line.

The slope at x = π is

m = 3cos(π) - 3πsin(π) = -3

So, the equation of the tangent line is y = -3x + b.

To find the value of b, we use the point (π, -3π) and the slope -3:

-3π = -3 * π + b

b = 0

So, the equation of the line tangent to the curve y = 3xcos(x) at the point (π, -3π) is y = -3x + 0 or simply y = -3x.

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