The variables a and b vary directly, and b=8 when a=2.

What is the direct variation equation that relates a and b?

A.

b=2a.

B.

b-4a

C

b=8a

D

b=16a

Answer:

She did not subtract 10 and 9 correctly. she did not rename correctly.

Step-by-step explanation:

your welcome :) hehe

Answer:

Step-by-step explanation:

It's correct look at the pic

Answer/Step-by-step explanation:

1. Which of the following expressions represents “the difference between a number and eleven”?

Answer: n - 11

Explanation:

"11 - n": eleven minus a number

"-11 n": eleven times a number

"n + 11": the sum of a number plus eleven

2. All of the following represent the same concept except _____.

Answer: a number minus five

Explanation: The other answers represent a number + five

I hope this helps!

The values of r and s is -1 and -4 respectively.

Given that:-

coordinates of j are (-8,-5)

coordinates of l are (6,-11)

coordinates of k are (r-4,2s)

Also, k is the mid-point of jl.

We have to find the values of r and s.

We know that, for  (x,y) and (z,w), the mid-point is ((x+z)/2, (y+w)/2).

Here,

(x,y) = (-8.-5)

(z,w) = (6,-11)

(r-4,2s) = ((x+z)/2,(y+w)/2)

Hence,

(r-4,2s) = ((-8+6)/2,(-5-11)/2)

(r-4,2s) = (-1,-8)

Comparing the coordinates, we get:-

r - 4 = -1

r = -1+4 =3

2s = -8

s =-8/2 = -4

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Answer:

x+10=55

x=45

Step-by-step explanation:

x+10=55

x=45

x=45 and the equation is (x+10)=55

Answer:

1.First set them equal to each other

(x+10)=55

2. Then minus 10 from both sides

x+10=55

-10. -10

x=45

Answer:

Step-by-step explanation:

Perimerter is 9.6ft

cost = $187.60

20% down

4 months of $39.40

1.- Calculate the 20%

187,6 ------------------- 100

x -------------------- 20

x = (20 x 187.6) / 100

x = 3752/100

x = 37.52

2.- Calculate the final price

Price paid = 37.52 + 4(39.40)

Price paid = 37.52 + 157.6

= $195.12

2.- Finance charge

= 195.12 - 37.52

= $157.6

The answer is 12

Step-by-step explanat

Answer:

12

Step-by-step explanation:

Answer:

its D/ 56.25

Step-by-step explanation:

because the other numbers are too small

the probability that none of the outcomes is an even number is 1/8 or approximately 0.125

The probability of rolling an even number on a fair six-sided die is 3/6 or 1/2, and the probability of rolling an odd number is also 1/2.

To find the probability that none of the outcomes is an even number, we need to calculate the probability of rolling an odd number on all three dice. Since the dice are rolled independently, we can multiply the probabilities together to get the overall probability:

P(rolling odd on one die) = \(1/2\)

P(rolling odd on two dice) = \((1/2)^2 = 1/4\)

P(rolling odd on three dice) =\((1/2)^3 = 1/8\)

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Answer:

I had the same question for math high school but the answer is 1.99

Step-by-step explanation:

Given -

i.e, length = 2cm, breadth = 4cm and height = 6cm

i.e, side = 2cm

To find -

Concept -

To find the number of cubes Mavis can fit into the rectangular box we are supposed to divide the volume of rectangular box by the volume of the cube. But before doing that we should know the formulas to find the volume of both the 3D shapes. i.e,

Volume of Rectangular Box = l × b × h

Volume cube = a³

where,

Solution -

\(\bf{Number\:of\: cubes=\frac{Volume\:of\: Rectangular\:Box}{Volume\:of\:cube}}\)

\(\rightarrow\sf{Number\:of\: cubes=\frac{l\times b\times h}{a\times a\times a}}\)

\(\rightarrow\sf{Number\:of\: cubes=\frac{2\times 4\times 6}{2\times 2\times 2}}\)

\(\rightarrow\sf{Number\:of\: cubes=\frac{\cancel{2}\times \cancel{4}^2\times \cancel{6}^3}{\cancel{2}\times \cancel{2}\times \cancel{2}}}\)

\(\rightarrow\sf{Number\:of\: cubes=2\times3}\)

\(\rightarrow\mathbf{Number\:of\: cubes=6\:boxes}\)

Hence, the number of cubes that can be fit into the rectangular box is 6 cubes.

Therefore, the function that matches the mosquito counts is'(w) = 8(\(1.5^{w}\)).

by the question.

To determine which function matches the mosquito counts, we can plot the given data points on a graph and see which function fits the curve. Here are the counts for the first few weeks:

Week Mosquito Count

0 8

1 20

2 50

3 125

4 312

Plotting these points on a graph with weeks on the x-axis and mosquito count on the y-axis, we get:

mosquito graph

Looking at the graph, we can see that the curve increases rapidly and seems to be exponential. This rule out option A (which is linear), leaving us with options B, C, and D.

To determine which of these options matches the data, we can try plugging in the week numbers and seeing which one gives us values close to the actual counts. We can also use a calculator or graphing technology to help us with this.

Option B gives us the following mosquito counts for the first five weeks:

Week Mosquito Count

0            8

1         19.5

2        47.25

3       114.19

4       276.32

Option C   gives us:

Week Mosquito Count

0       8

1        12

2       18

3       27

4       40.5

Option D is not a function of mosquito counts with weeks as the input variable, so we can rule it out.

Comparing the values from options B and C to the actual counts, we can see that option C is the closest match.

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Answer:3

Step-by-step explanation:

PLEASE GIVE ME BRAINLIEST! :)

The height of the pizza box is not given, but we can assume that it is equal to the width, since the box is rectangular.If the length is 14 inches, then the width is:width = base area / length

width = 49 in² / 14 in

width = 3.5 inSo the height is also 3.5 inches.Now we can calculate the volume:Volume = base area x height

Volume = 49 in² x 3.5 in

Volume = 171.5 in³Therefore, the total volume of the pizza boxes is 171.5 cubic inches.

The name for a data value that is far above or below the rest is called an outlier.

An outlier is an observation that deviates significantly from other observations in a dataset. It is an extreme value that lies outside the typical range of values and may have a disproportionate impact on statistical analyses and calculations. Outliers can occur due to various reasons, including measurement errors, data entry mistakes, or genuine rare events. Identifying and handling outliers appropriately is important in data analysis to ensure accurate and reliable results.

When dealing with outliers, it is important to assess whether they are the result of errors or genuine extreme values. Statistical techniques, such as box plots, scatter plots, or z-scores, can be used to detect outliers. Once identified, the appropriate action depends on the nature and cause of the outliers. In some cases, outliers may need to be corrected or removed from the dataset, while in other cases, they may provide valuable insights or require further investigation.

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Answer:

2 and 8

Step-by-step explanation:

let the 2 numbers be x and y, with x greater than y

the quotient of 2 numbers is the result of division of the 2 numbers, so

\(\frac{x}{y}\) = 4 ( multiply both sides by y )

x = 4y → (1)

x - y = 6 ← (2) is the difference of the 2 numbers

substitute x = 4y into (2)

4y - y = 6

3y = 6 ( divide both sides by 3 )

y = 2

substitute y = 2 into (1)

x = 4y = 4 × 2 = 8

the 2 numbers are 2 and 8

The quotient of two numbers is 4 and the difference between the two numbers is 6. The two numbers that satisfy the given condition are 8 and 2.

Let's assume the two numbers as x and y.

According to the given information:

The quotient of two numbers is 4, which means x/y = 4.

The difference between the two numbers is 6, which means x - y = 6.

We can solve these two equations simultaneously to find the values of x and y.

From the first equation, we have x = 4y.

Substituting this value of x into the second equation, we get:

4y - y = 6

3y = 6

y = 2

Now, substitute the value of y back into the first equation to find x:

x = 4 * 2

x = 8

Therefore, the two numbers are x = 8 and y = 2.

The two numbers are 8 and 2.

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Given the equation that represents the relationship between the number of months her parents have been saving and the amount in their account.

3200 is like the intercept and the amount already in the account based on the context of the problem.

The amount in the account is along the y axis of the line and since y intercept is the point where the line cuts the y axis and 3200 lies on the y axis hence 3200 will be the money already in the account.

The isotopes of gallium-69 are Ga71 and Ga67.

Ga71 is an isotope of gallium-69 because it has the same number of protons (31) but a different number of neutrons (40) compared to the standard isotope of gallium-69 (31 protons and 38 neutrons).

Ga67 is another isotope of gallium-69 because it also has 31 protons but a different number of neutrons (36) compared to the standard isotope of gallium-69.

These isotopes have different mass numbers due to the varying number of neutrons, while still retaining the same number of protons. Isotopes of an element have the same atomic number (number of protons) but different mass numbers.

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The decimal number system uses nine different symbols is False as the decimal number system actually uses ten different symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. These ten symbols, also known as digits, are used to represent all possible numerical values in the decimal system.

Each digit's position in a number determines its value, and the combination of digits creates unique numbers. This system is widely used in everyday life and forms the basis for arithmetic operations and mathematical calculations. Thus, the decimal number system consists of ten symbols, not nine.

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The city covers an area of 80.38 square kilometers.

To calculate the number of square kilometers in 31.2 square miles, we need to use the given conversion factor 1 mile = 1.61 km. We can do this by multiplying the number of square miles by the square of the conversion factor.

Hence, the number of square kilometers in 31.2 mi² is calculated as follows:

1 mi² = 1.61² km² (square both sides to convert square miles to square kilometers)1 mi² = 2.5921 km² (square of 1.61)

Now, we can calculate the area in square kilometers by multiplying the number of square miles by the area conversion factor:

31.2 mi² × 2.5921 km²/mi² = 80.38 km²

Therefore, the city covers an area of 80.38 square kilometers.

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Yes, the P-values in (i) and (ii) are both very small, providing strong evidence against the null hypothesis.

(i) Upper Ha: p > 0.50Ha: p > 0.50​ is 0.0045.

(ii) Upper Ha: p ≠ 0.50Ha: p ≠ 0.50​ is 0.0090.

(iii) Upper Ha: p < 0.50Ha: p < 0.50​ is 0.9955.

Yes, the P-values in (i) and (ii) are both very small. This indicates that the probability of observing a test statistic as or more extreme than the one we have is very low, or in other words, it is very unlikely that the null hypothesis would be true. This provides strong evidence against the null hypothesis.

To calculate the P-values, the z-score (2.582) was converted to a p-value using the standard normal distribution table. For (i) and (ii), the p-value was determined by finding the area under the curve that is greater than the z-score. For (iii), the p-value was determined by finding the area under the curve that is less than the z-score. This was then subtracted from 1 to obtain the p-value for (iii).

Yes, the P-values in (i) and (ii) are both very small, providing strong evidence against the null hypothesis.

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Alex can make a total of 180 different sandwiches by choosing one kind of meat from 10 options and two kinds of cheese from 9 options.

To determine the number of different sandwiches Alex can make, we need to consider the combinations of meat and cheese. Since Alex can choose one kind of meat from 10 options, there are 10 choices for the meat component of the sandwich. For the cheese component, Alex can choose two kinds of cheese from 9 options.

To calculate the total number of combinations, we can use the formula for combinations without repetition. The formula is nCr = n! / (r!(n-r)!), where n is the total number of options and r is the number of choices. In this case, n is 9 (number of cheese options) and r is 2 (number of cheese choices). Thus, the number of combinations of two kinds of cheese is \(9C2\)= 9! / (2!(9-2)!) = 36.

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Answer:

a. 24

b.600

c.36

d. No

Step-by-step explanation:

a.You know the approximate number of gallons is about 24 gallons because each tank holds twelve and your family used 2 of them.

b. You know you drove about 600 miles. This is because you used 24 gallons And each gallon should get you 25 miles. multiply The 2 together to get 600 miles. Or you could set a thing like 1/25=24/x and solve for x.

c. It cost 36 dollars because each gallon is 1.5 and you used 24 gallons so mul the two together to get 36

d. First find the amount of gallons used by dividing 350 by 25 to get 14. Then multiply 14 by 1.5 to get 21. 21 is greater than 20 so you don’t have enough money.

Answer:

1 foot equals 12 inches

Step-by-step explanation:

Answer:

Divide the inches by 12

Step-by-step explanation:

\(12 in = 1 ft\\ 1 in =\frac{1}{12} ft\\ x in =\frac{x}{12} ft\)

Answer:

4x2=8

Step-by-step explanation:

This equation is simple and easy cause its base sick math

Jeff needs to start watering at 8:57 a.m. to be ready to leave for swim practice at 9:50 a.m.

Let's start by calculating the total watering time as follows -

5 locations * 25 minutes each = 125 minutes of watering time

4 locations * 2 minutes each for changing the sprinkler = 8 minutes for changing the sprinkler.

Hence, total time = 125 minutes + 8 minutes = 133 minutes

So, Jeff needs 133 minutes for watering the garden. The latest time he should start is 9:50 a.m. - 133 minutes = 9:50 a.m. - 2 hrs 13 minutes = 8:57 a.m.

Therefore, Jeff needs to start watering around 8:57 a.m. to be ready to leave for swim practice at 9:50 a.m.

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Since z is greater than both, it assigns the value of z to R, making it 8. Therefore, at the end of the code, the value of R would be 8.

At the end of the code, the value of R would be 8. The code first adds the value of y to x, making x equal to 9. It then sets the value of R to y, which is 5. The first if statement compares x to y and since x is greater than y, it assigns the value of x to R, making it 9. The second if statement checks if z is greater than both x and y.

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Answer:

4x+12

Step-by-step explanation:

hereeeeere you go?!

Answer:

4x + 12

Step-by-step explanation:

Louise has walked B. 9 miles

Since Louise is walking 12 miles to raise funds for a local cause. and If she has completed 3/4 of the distance, the number of miles she has walked, t = total distance × fraction of total distance.

Since total distance = 12 miles, and fraction of total distance = 3/4.

The number of miles she has walked, t = total distance × fraction of total distance.

Substituting the values of the variables into the equation, we have

t = 12 × 3/4

t = 3 × 3

t = 9 miles.

So, Louise has walked B. 9 miles

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Answer: 9

Step-by-step explanation:

because i know