Please!! help me with number 7. and 9.

and I will THANK YOU!!!

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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There are 13 rungs on the ladder :)

Answer:

23 rungs

Step-by-step explanation:

Let the number of rungs on the ladder be h and make the necessary adjustments based on this

Given that she is on the middle rung of a ladder this is equivalent to

= (h + 1)/2

She climbed up three rungs

= (h + 1)/2 + 3

moved down five rungs

= (h + 1)/2 + 3 - 5

and then climbed up 7 rungs

=  (h + 1)/2 + 3 - 5 + 7

Then she climbed up the remaining 6 rungs to the top of the ladder

(h + 1)/2 + 3 - 5 + 7 + 6 = h

(h + 1)/2 + 11 = h

h + 1 + 22 = 2h

2h - h = 23

h = 23

The answer is 620.6666666666667

The remainder is 620.7 or 620.6

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.

In this Decimal Point Movement question, Moving the decimal five places to the right in mathematics is a shortcut for multiplication by 105 (one hundred thousand). This uses the principle of powers of ten.

In mathematics, moving the decimal five places to the right is actually a shortcut for multiplying by 105, or 100,000. This concept utilizes the patterns in powers of ten. For instance, for any given number, we can count the zeros in the power of ten and then move the decimal point that same number of places to the right.

Illustrating with an example, let's say we have the number 5.27. If we multiply it by 105, we move the decimal five places to the right to get 527000. This aligns with the multiplication principle: when we multiply by 10, 100, 1000, and so on, each time, we are essentially incrementing the decimal place to the right.

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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

Answer in the attachment.

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

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.

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

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.

365064.96 thats what i got hope it helps

Tom drank 2.25qt of the jug, in fraction form it would be 2 1/4

is it multiple choice

Hello!

They should most definitely use meters. Meters are much bigger than centimeters as centimeters are 1/100th of a meter. Meaning, it will take 100 centimeters to get 1 meter. A soccer field is a large surface, and to get a simpler number, you should use meters.

Hope this helps!

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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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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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

The answer is D! Aight hope it helped

The value of f in the equation 6f − 12 = −4f + 6 is 1 4/5.

To answer the student's question, we need to solve the algebraic equation 6f − 12 = −4f + 6 for the unknown variable f. First, we want to get all terms with f on one side of the equation, and all constant terms on the other side. Thus, we'll add 4f to each side of the equation to eliminate -4f from the right side of the equation and get 6f + 4f = 6 + 12. This simplifies to 10f = 18, then we divide each side by 10, and we get f = 18/10 which reduces to f = 1 4/5 (Option C).

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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.

[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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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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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

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.

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

Answer:

[tex]x=-9[/tex]

[tex]y=4[/tex]

Step-by-step explanation:

[tex]3x+10y=13[/tex] ← Equation 1

[tex]4(-2y+x)-9x=13\\[/tex]

By simplifying the above equation we get,

[tex]-8y+=4x-9x=13[/tex] (Simplifying the brackets)

[tex]-8y-5x=13[/tex] (By subtracting [tex]-9x[/tex] from [tex]+4x[/tex]) ← Equation 2

Multiply Equation 1 by 5 and Equation 2 by 3 and add them together.

Equation 1 multiplied by 5 will give,

[tex]15x+50y=65[/tex]

Equation 2 multiplied by 3 will give,

[tex]-24y-15x=39[/tex]

Add those together,

[tex]15x+50y-24y-15x=65+39[/tex]

[tex]26y=104[/tex] (After simplifying [tex]x[/tex] values)

Therefor [tex]y=4[/tex]

By substituting [tex]y=4[/tex] to Equation 1 we get,

[tex]3x+10*4=13[/tex][tex]3x+40=13\\3x=-27\\x=-9[/tex]

Therefor we can say,

[tex]x=-9[/tex]

[tex]y=4[/tex]