Gabrielle's age is two times Mikhail's age. The sum of of their age is 66. What is Milkhail's age?

Answer:

38%

Step-by-step explanation:

Given that X,the hours per week the music student practice follow a normal distribution.

X:N(8,4)

We have to find the percentage of students who practice between 6 and 10 hours.

6<x<10 implies converting to z

We know z = (x-mean)/sigma = (x-8)/4

Hence 6<x<10 is equivalent to (6-8/4)<Z<(10-8/4)

= |z|<0.5

From std normal table we find this area equals = 0.1915+0.1915

=0.3830 = 0.38 (rounded off)

Hence required percentage = 0.38x100 = 38%

Final answer:

To determine the percentage of music students practicing between 6 to 10 hours, we convert these hours to z-scores and use the standard normal distribution table, which reveals that approximately 38.2% of students practice within this range.

Explanation:

To find the percentage of music students who practice between 6 to 10 hours per week, we can use the properties of the normal distribution. We first need to convert the range values to z-scores using the formula Z = (X - μ) / σ, where X is the value from the data set, μ is the mean, and σ is the standard deviation.

Converting 6 hours to a z-score:
Z = (6 - 8) / 4 = -0.5

Converting 10 hours to a z-score:
Z = (10 - 8) / 4 = 0.5

Now we use the standard normal distribution table to find the probability corresponding to these z-scores. The area under the curve between z-scores -0.5 and 0.5 gives us the desired percentage. Looking up the z-scores in the standard normal distribution table, we find that the area between these scores is approximately 38.2%. Thus, 38% is the closest option provided.

Answer: A. Based on the law of syllogism, if two lines meet at a 90 angle, then they have opposite reciprocal slopes.

Step-by-step explanation:

Law of Syllogism which is also known as reasoning by transitivity is a valid argument method of a deductive reasoning that follows a sequence.

Its similar to the transitive property of equality, which states that if a=b and b=c then a=c

The given statement :  If two lines meet at a 90 angle, they are perpendicular. If two lines are perpendicular, they have opposite reciprocal slopes.

let a →" two lines meet at a 90 angle"

b→ "two lines are perpendicular are perpendicular"

c→" two lines have opposite reciprocal slopes"

Since a→b and b→c

Therefore by law of syllogism, a→c

i.e. If two lines meet at a 90 angle, then they have opposite reciprocal slopes.

The square is either 25 or 16.

Number puzzles have specific set of rules, you first has to figure out the pattern being followed and then answer the puzzle according to the pattern.

According to question,

the sum of two digits must be 7.

Take some instances,

where 16 is a square of 4.

where 25 is square of 5.

where either 34 or 43 both are not the perfect square of any number.

The possibilities of a number can be either 16 or 25.

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Hello!

To answer this question we need to find the factors of -120.

The total set (both negative and postive! ) are the following:

After looking over all of these factors, we can see that 10 · -12 is equal to not only -120, but when the multiplication sign is replace by addition, it is equal to -2!

Hope this helps.

Final answer:

The two numbers that multiply to -120 and add to -2 are 10 and -12. These satisfy the given conditions of multiplication and addition.

Explanation:

To find two numbers that multiply to -120 and add to -2, we can set up a system of equations based on the factors of -120. We know that if two numbers multiply to a negative number, one must be positive and the other negative. So we look for two factors of 120 with a difference of 2, given that one will be negative and the other positive.

Considering the factor pairs of 120: (1, 120), (2, 60), (3, 40), (4, 30), (5, 24), (6, 20), (8, 15), (10, 12), we find that 10 and -12 satisfy both conditions: 10 * -12 = -120 and 10 + (-12) = -2.

is it multiple choice

150 because if it is going 420 in 14 hours you divide 420 by 14 which gives you 30 and then you multiply 30 x 5 and you get 150 so the bird goes 150 miles in 5 hours

It will fly 150 in 5 hours

1m = 100cm.  

so since the ladybug is 2cm.  

you divide 2 by 100, which you will get 0.02m (divide by 100 means moving the dot two times to the left. thats why it leaves you 0.02m)

0.02 meters would be the length of the lady bug  because 1 cm is equal to 0.01 meters

If you cancel out the denominators by multiplying both sides by the bottom, you can then factor to find X= a / (a-b)

To solve the equation 5a/x = 5b/(x-1) for x, multiply both sides of the equation by x(x-1) to clear the fractions. Simplify and solve for x by isolating it on one side of the equation.

To solve the equation 5a/x = 5b/(x-1) for x, we need to clear the fractions by multiplying both sides of the equation by the common denominator, x(x-1). This gives us 5a(x-1) = 5bx. Expanding the equation, we get 5ax - 5a = 5bx. Rearranging the terms, we have 5ax - 5bx = 5a. Factoring out x, we get x(5a-5b) = 5a. Finally, dividing both sides by (5a-5b), we can solve for x as x = 5a/(5a-5b).

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6-x=5x+30

-x=5x+30-6

-x=5x+24

-x-5x=24

-6x=24

x=24/-6

x=-4

Hello there!

[tex]6-x=5x+30\\[/tex]

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by 6 from both sides of the equation.

[tex]6-x-6=5x+30-6[/tex]

Simplify

[tex]-x=5x+24[/tex]

Then you subtract by 5x from both sides of the equation.

[tex]-x-5x=5x+24-5x[/tex]

Simplify

[tex]-6x=24[/tex]

Divide by -6 from both sides of the equation.

[tex]\frac{-6x}{-6}=\frac{24}{-6}[/tex]

Simplify it should be the correct answer.

[tex]x=-4[/tex]

Answer⇒⇒⇒⇒⇒x=-4

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

Answers:

a. The company needs to sell 100 units to reach the maxmum profit.

b. The company's maximum profit is $5,000.

Solution:

a. How many unit does the company need to sell to reach the maximum profit?

p(x)=-0.5x^2+100x

This is a quadratic equation, and its graph is a parabola vertical (because the veriable "x" is square). Comparing with the general form:

p(x)=ax^2+bx+c; a=-0.5, b=100, c=0

a=-0.5<0 (negative), then the parabola opens downward, and it has a maximimun value (maximum profit) at its vertex.

We can find the abscissa of the vertex (units that the company needs to sell to reach the maximum profit using the following formula:

x=-b/(2a)

Replacing b by 100 and a by -0.5 in the formula above:

x=-100/[2(-0.5)]

x=-100/(-1)

x=100

The company needs to sell 100 units to reach the maximum profit.

b. What's the company's maximum profit?  

To determine the maximum profit we substitute the value of "x" obrained in part "a" in the quadratic equation:

x=100→p(100)=-0.5(100)^2+100(100)

p(100)=-0.5(10,000)+10,000

p(100)=-5,000+10,000

p(100)=5,000

The company's maximum profit is $5,000.

jackie brought 3/4 gallon of ice tea to a party

bill brought 7/8 of a gallon of ice tea to party.

To find total gallons of ice tea they hav[tex]\frac{3}{4} + \frac{7}{8}[/tex]e, we add the fractions

[tex]\frac{3}{4} + \frac{7}{8}[/tex]

To add two fractions , we make the denominators same

[tex]\frac{3*2}{4*2} + \frac{7}{8}[/tex]

[tex]\frac{6}{8} + \frac{7}{8}[/tex]

Now add the numerators

[tex]\frac{13}{8}[/tex]

So, They have [tex]1\frac{5}{8}[/tex] gallons of ice tea.

74.7° C

90° - 74° + 58.7° = 74.7° C

Rebecca's tea was 74.7°C at the point of drinking after cooling and reheating.

Rebecca's tea started at a temperature of 90°C. After leaving it to cool for 20 minutes, its temperature dropped by 74°C, so the new temperature was

90°C - 74°C = 16°C.

When she reheated the tea in the microwave, the temperature increased by 58.7°C, resulting in a final drinking temperature of

16°C + 58.7°C = 74.7°C.

1.  Curcumfrance 37.68

2.Diameter of 16m

3. Radius of 7m

4. Diameter of 8m

Hope it Helps!!

The circle with the largest area to the circle with the smallest area.

Area of circle with diameter 16 cm >  Area of circle with radius 7 m > Circumference of circle of  37.68 m > Area of circle with diameter 8 cm .

Area is the entire amount of space occupied by a flat (2-D) surface or an object's shape. The area of a plane figure is the area that its perimeter encloses. The quantity of unit squares that cover a closed figure's surface is its area.

Given:

1. Area of Circle

= πr²

= 3.14 x 4 x 4

= 50.24 m²

2. Area of Circle

= πr²

= 3.14 x 7 x 7

= 153.86 m²

3. Circumference of circle = 2πr

37.68 = 6.28r

r= 6

Area of Circle

= πr²

= 3.14 x 6 x 6

= 113.04 m²

4. Area of Circle

= πr²

= 3.14 x 8 x 8

= 200.96 m²

So, Area of circle with diameter 16 cm >  Area of circle with radius 7 m > Circumference of circle of  37.68 m > Area of circle with diameter 8 cm .

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5.5 because it much larger and faster

i believe Courtney would win because she is going furthest per cm/minute

Using the concept of scale, we find that the distance between Cleveland and Cincinnati on the first map (1 cm to 10 km) is 40 cm, equivalent to 400 km in real-world distance. On the second map with a scale of 1 cm to 50 km, the equivalent distance is calculated to be 8 cm.

To calculate the distance between Cleveland and Cincinnati on the second map, we use the concept of scale. On the first map, the scale is 1 cm to 10 km, and the distance is represented as 40 cm. Scaling this to the real-world distance gives us 40 cm × 10 km/cm = 400 km between the two cities.

Now, let's apply the second map's scale of 1 cm to 50 km. To find the corresponding map distance, we set up a proportion: 10 km/cm (first map) / 50 km/cm (second map) = 40 cm (distance on the first map) / X cm (distance on the second map). Simplifying this, we find that X = 40 cm ×(10 km/cm) / (50 km/cm) = 40 cm × 1/5 = 8 cm.

Therefore, the distance between Cleveland and Cincinnati on the second map, which has a scale of 1 cm to 50 km, would be 8 cm.

Let P = Pecan trees and H = Hazelnut trees.

Multiply the number of acres of each by the number of pounds of each acre:

45 pounds per acre of Pecan trees would be 45p

25 pounds per acre of hazelnut trees would be 25h

You would then add those together to get the total pounds of nuts:

45p + 25h = 900

The answer would be D, 45p + 25h = 900

Answer:

answer is 77

Step-by-step explanation:

The required, based on the provided information and the properties of parallel lines and transversals, the angle ∠7 measures 77° as well.

In the given scenario, it is stated that line m and line n are parallel lines, and they intersect at a point when a transversal line is introduced. This situation is depicted in the accompanying figure.

Within this configuration, Angle ∠2 is measured to be 77°, and it is situated opposite Angle ∠4. Due to the nature of parallel lines and transversals, corresponding angles are congruent. Consequently, the measure of ∠7, which corresponds to ∠2, will also be 77°.

Therefore, based on the provided information and the properties of parallel lines and transversals, we can ascertain that angle ∠7 measures 77° as well.

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n = 8

the sum to n terms of a geometric sequence is

[tex]S_{n}[/tex] = [tex]\frac{a(1-r^{n )} }{1-r}[/tex]

where a is the first term and r the common ratio

here a = 16 and r = [tex]\frac{64}{-32}[/tex] = [tex]\frac{-32}{16}[/tex] = - 2

[tex]S_{n}[/tex] = ( 16( 1 - ( - 2 )^n )/1 - (- 2 )) = - 1360

[tex]\frac{16}{3}[/tex] ( 1 - (- 2 )^n ) = - 1360

multiply both sides by [tex]\frac{3}{16}[/tex]

1 - (- 2 )^n = - 255

- (- 2 )^n = - 256

)-2)^n = 256

note that [tex]2^{8}[/tex] and [tex](-2)^{8}[/tex] = 256

hence n = 8

A compound inequality is a sentence with two inequality statements joined either by the word “or” or by the word “and.” “And” indicates that both statements of the compound sentence are true at the same time.

“Or” indicates that, as long as either statement is true, the entire compound sentence is true.

Now as shown in the graph, the solution inequality of the graph is :

x > 3 and x < 5   [please note, circles in the graph indicate exclusion, dots indicate inclusion. in the graph given circles are shown, so it depicts exclusion]

Now let's solve each option to find if it fits in with the above inequality

Option 1 : 2x-4 > 6 or 3x < 9

⇒ x > 5 or x < 3

Option 2 : 2x - 4 < 6 and 3x > 9

⇒ x < 5 and x > 3

Option 3 : 3x + 8 > -7 or -4x < 12

⇒ 3x > -15 or x < -3

⇒ x > -5 or x < -3

Option 4 : 3x + 8 < -7 and -4x > 12

⇒ 3x < -15 and x > -3

⇒ x < -5 and x > -3

So the compound sentence in option 2 : 2x - 4 < 6 and 3x > 9

has its solution set on the graph.

it is b i know it -5-5=0

Final answer:

The correct expression to find the temperature difference between the low and high temperatures when the temperature rose as much above zero as it was below zero is 5 + 5 degrees, which equals 10 degrees in total.

Explanation:

The question involves finding the difference in temperature from a low of -5 degrees Fahrenheit to a high that is as many degrees above zero as the low was below zero. To calculate the difference, we consider the increase in temperature from the low to 0 degrees, which is 5 degrees, and then the additional increase to the high temperature, which is also 5 degrees above zero. Therefore, the total change in temperature is 5 degrees (to get to zero) plus another 5 degrees (to reach the high), totaling 10 degrees.

The correct expression to find the number of degrees between the low and high temperatures would be C. 5 + 5, representing the increase from -5 degrees to 0, and from 0 to +5 degrees, respectively.

Answer:

its 10.55

Step-by-step explanation:

because he started with 12.50 spend 6.95 and neede 5 more

Answer:

its 10.55

Step-by-step explanation:

because he started with 12.50 spend 6.95 and needs 5 more in order to get the next

Please mark brainiest

Two consecutive odd numbers are 71 and 73 such that their sum is 144.

Continually following one another in a regular counting order or in the order of smallest to greatest are numbers known as consecutive numbers.

Let first odd number is x

then second consecutive odd number will be x+2

Given that the sum is 144

So,

x+(x+2)=144

On solving and adding like terms

2x+2=144

On subtracting 2 both sides

2x+2-2=144-2

2x=142

On dividing 2 both sides

x=142/2

x=71

Thus, two consecutive odd numbers are 71 and 73.

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the change will be 1.50 because 7.50 minus 9.00 is 1.50

The percent change between $7.50 and $9.00 is calculated by subtracting the initial value from the final value, dividing that by the initial value, and multiplying by 100%. This results in a percent change of 20%.

The percent change between two values is calculated by subtracting the initial value from the final value, dividing the result by the initial value, and then multiplying by 100%. In your case, you want to find the percent change between $7.50 and $9.00.

Start by subtracting the initial value ($7.50) from the final value ($9.00). This gives us $1.50.

Then, divide $1.50 by the initial value ($7.50), giving us 0.2.

Finally, multiply 0.2 by 100% to get the percent change, which is 20%. So the percent change between $7.50 and $9.00 is 20%.

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Answer:

[tex](\frac{x}{3})(\frac{6}{x})=2[/tex]

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

1. You have the following multiplication given in the problem above:

[tex](\frac{x}{3})(\frac{6}{x})[/tex]

2. Multiply the numerators and the denominators:

[tex](\frac{x}{3})(\frac{6}{x})=\frac{6x}{3x}[/tex]

3. You can simplify the expression. Then, you have:

[tex]\frac{6x}{3x}=2[/tex]

Answer:

2

Step-by-step explanation:

Because I did it on edge

Please give me brainliest

Given the radius [tex] r [/tex], the volume of a sphere is

[tex] \dfrac{4}{3}\pi r^3[/tex]

So, in your case, the volume is

[tex] \dfrac{4}{3}\cdot 7^3 \pi= \dfrac{1372}{3}\pi \approx 1436.7550402[/tex]

So, the closest option is 1436.8 cm3

Hey there!!

The volume of a sphere =

... [tex]\frac{4}{3} \pi r^{3}[/tex]

'r' is the radius.

The radius is given by 7 in.

The volume =

... [tex]\frac{4}{3} \pi 7^{3}[/tex]

... [tex]\frac{4}{3}(3.14)(343)[/tex]

... [tex]\frac{4}{3}(1077.02)[/tex]

... [tex]4(359.19)[/tex]

... [tex]1436.76[/tex]

Hence, the volume is 1436.8 cm³ as stated in option(B)

Hope my answer helps!

[tex]2x+4=16\\\\2x=12\\\\x=6[/tex]

The solution to the equation 2x + 4 = 16 is x = 6.

Given the equation in the question:

2x + 4 = 16

To solve the equation 2x + 4 = 16, first, isolate the variable term on one side by moving the constant term to the other side of the equation.

2x + 4 = 16

Subtract 4 from both sides of the equation:

2x + 4 - 4 = 16 - 4

2x = 16 - 4

Subtract 4 from 16:

2x = 12

Divide both sides of the equation by 2 to isolate the variable x:

2x/2 = 12/2

x = 12/2

x = 6

Therefore, the value of x is 6.

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8/12 simplifies to 2/3 by dividing the top and bottom by 4

24/36 divide top and bottom by 12= 2/3

4/6 divide top and bottom by 2 = 2/3

6/10 divide top and bottom by 2 = 3/5

Choice D

look at the numerator and denominator.  if you can use the same number to multiple or  divde to get it

B is equivalent  because 8/12 becomes 24/26 if I times by 3/3

The answers is A btw

365064.96 thats what i got hope it helps

Answer:

y=9x+1.6

This is the right answer but there are slightly different equations similar

Answer:

16π cm^2

Step-by-step explanation:

circumference of a circle = 2 * radius * π = 8π cm

so radius = 4 cm

area of a circle = radius * radius * π

= 4 * 4 * π

= 16π cm^2

Answer:

ans is 16pi cm2

Step-by-step explanation:

Circumference = Dia x pi = 8pi

Dia = 8

Area = Dia^2 x pi / 4 = 8^2 x pi / 4 =64 x pi /4

= 16pi