pls answer asap!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:

4

Step-by-step explanation:

the answer is 4 because 2 people studied 4 hours, 1 person studied 4.5 hours and one person studied 8.5 (they are insane) which would total to 4 people studying for at least 4 hours.

Plz mark brainliest

Answer:

b or d

Step-by-step explanation:

im pretty sure because multiplying it makes more sense and also stop cheating on map testing

The equation of the line for the given data set of scatter plots will be y =- x. Since their Mean(M) is equal.

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. Sometimes, the aforementioned is referred to as a "linear equation of two variables," with y and x serving as the variables.

Given a data set of the number of text messages sent (x) and text messages received (y) by 10 students in a half hour.

so

x     y

0    2

5    1

6    4

8    12

11    11

12    13

15    11

17    20

21    22

24    23

Where M of x = 11.9

also the M of y = 11.9

Sum of X = 119

Sum of Y = 119

Mean X = 11.9

Mean Y = 11.9

The sum of squares (SSX) = 504.9

The sum of products (SP) = 504.9

Regression Equation = ŷ = bX + a

b = SP/SSX = 504.9/504.9 = 1

a = MY - bMX = 11.9 - (1*11.9) = 0

ŷ = 1X - 0

Thus the equation of line best fit will be y = x.

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Answer:

Do you want to know the quardinants if so its in the 1st.

Step-by-step explanation:

Answer:

78

Step-by-step explanation:

sub x = -3 in the equation 6(2x² - 5)

6(2(-3)² - 5)

6(2(9) - 5)

6(18 - 5)

6(13)

78

3) We have a model that relates the number of trees and time, expressed in months (m).

This relation is:

We can find the month m where the number of trees is N(m) = 1096 as:

Answer: The number of trees will be 1096 after m = 2 months [Option A]

Answer:

  745

Step-by-step explanation:

You want the original number of books in the library if adding 298 children's books increased the fraction of children's books from 2/5 to 4/7.

We often like to work problems like this in terms of "ratio units." Here, we'll let x represent the number of books in a ratio unit. This means the number of children's books is originally 2x, and the total number of books is originally 5x. Then we have ...

  (2x +298)/(5x +298) = 4//7

Cross multiplying gives ...

  7(2x +298) = 4(5x +298)

  3(298) = 6x . . . . . . . . . . . . . subtract (14x+4(298))

  149 = x

  745 = 5x . . . . . . the original number of books in the library

There were 745 books in the library at first.

__

Additional comment

If we let x represent the original number of library books, then the arithmetic involves more fractions. You would have an equation like ...

  2/5x +298 = 4/7(x +298)

<95141404393>

\(\implies {\blue {\boxed {\boxed {\purple {\sf { \: \: 1 \frac{1}{15} \:(or) \: 1.0667}}}}}}\)

\(\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}\)

\( \frac{4}{5} \div \frac{3}{4} \)

= \( \: \frac{4}{5} \times \frac{4}{3} \)

= \( \: \frac{4 \times 4}{5 \times 3} \)

= \( \: \frac{16}{15} \)

= \( \: 1 \frac{1}{15} \)

( OR )

= \( \: 1.0667\)

\(\bold{ \green{ \star{ \orange{Mystique35\:♨}}}}⋆\)

Step-by-step explanation:

\( \frac{4}{5} \div \frac{3}{4} \\ = \frac{4}{5} \times \frac{4}{3} \\ = \frac{16}{15} \\ thank \: you\)

Answer:

45 fireflies

Step-by-step explanation:

Because,

Sheri caught 70 and Robert caught 35.

150-35-70= 35

35+10 is equal to 45.

Following the rules given is the right answer

The probability of drawing a king from a standard deck of 52 cards is 1/13.

In a standard deck of 52 playing cards, there are four kings: the king of hearts, the king of diamonds, the king of clubs, and the king of spades.

To find the probability of drawing a king, we need to determine the ratio of favorable outcomes (drawing a king) to the total number of possible outcomes (drawing any card from the deck).

The total number of possible outcomes is 52 because there are 52 cards in the deck.

The favorable outcomes, in this case, are the four kings.

Therefore, the probability of drawing a king is given by:

Probability = (Number of favorable outcomes) / (Number of possible outcomes)

= 4 / 52

= 1 / 13

Thus, the probability of drawing a king from a standard deck of 52 cards is 1/13.

This means that out of every 13 cards drawn, on average, one of them will be a king.

It is important to note that the probability of drawing a king remains the same regardless of any previous cards that have been drawn or any other factors.

Each draw is independent, and the probability of drawing a king is constant.

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Answer:

0.4%*44000=1760 acres

Step-by-step explanation:

Answer:

I think it's 21,600 I don't know

I don't know what grade you are in but I think this is the answer

Answer:

The average rate of change of f on the interval [-4, -2] is -11.

Step-by-step explanation:

Recall that the average rate of change of a function over an interval is simply the slope of the line connecting the two endpoints.

Therefore, the average rate of change of f on the interval [-4, 2] equals:

\(\displaystyle f_\text{avg}(x) = \frac{f(2)-f(-4)}{2-(-4)}\)

Evaluate:
\(\displaystyle \begin{aligned} f_\text{avg}(x) & = \frac{f(2)-f(-4)}{2-(-4)} \\ \\ & = \frac{(-3)-(63)}{6} \\ \\ &= -11 \end{aligned}\)

In conclusion, the average rate of change of f on the interval [-4, -2] is -11.

Answer:

✓SSE = 127.3

✓SST = 281.2

✓SSR = 153.9

✓percentage of the total sum of squares = 54.73%

✓The value of the sample correlation coefficient= 0.7398

Step-by-step explanation:

Given:

xi :2 6 9 13 20

yi:7 18 9 26 23

The given regression equation = 7.6 + 0.9 x.

we need to calculate the required SSE, SST and SSR , after this The percentage of total sum of squares can be computed. To do this we need to find the square difference between the actual value of y and average value of y, also the difference between actual value and predicted y value.

CHECK THE ATTACHMENT FOR DETAILED EXPLANATION.

Answer:

p=2m

p+m=51

take the 2m and plug that in for p -> 2m+m=51

3m=51

m=51/3

m=17 then plu the value of m into Paula's points

p=2(17)

p=34

Answer:

equation: (12x+19) + (22x-9) = 180

x= 5

Step-by-step explanation:

the equation was made by the fact that the angles would add up to equal 180 degrees since the line made by them is straight

(12x+19) + (22x-9) = 180 is the same as 12x + 19 + 22x - 9 = 180

add like terms: 34x + 10 = 180

subtract 10 from both sides: 34x = 170

divide both sides by 34 to find x: x = 5

Answer:

Step-by-step explanation:

its a supplementary angles:

meaning two angles adds up to 180

therefore,

12x+19+22x-9=180

-------------------------------

to find the value of x:

12x+19+22x-9=180

12x + 22x = 180 - 19 + 9

34x = 170

x = 170 / 34

x = 5

Answer:

15x^2

Step-by-step explanation:

Angles of similar triangles are always congruent a: 63, b: 88, c: 29 and x = 53.75

Based on the information available, there are numerous equations for calculating the area of a triangle. As indicated in the calculator above, please use the Triangle formula for additional information and equations for calculating the area of a triangle as well as determining the sides of a triangle using whatever information is available.

find the ratio between the two triangles:

40 on the left corresponds to 50 on the right = 40/50 = 43/x

to find x:

40x = 43 × 50

40x = 215

x = 215/40

x = 53.75

"angles of similar triangles are always congruent."

a: 63

b: 88

c: 29

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Full question:

Given a pair of similar triangles, find the missing length x and the missing angles A, B, and C.

Answer:

$7.50

Step-by-step explanation:

Answer: 7.50

Step-by-step explanation: 20 can go into 60 3 times so 2.50X3 =7.50

The probability that their mean weight gain during freshman year is between 0 kg and 3 kg is 70%

It is a branch of mathematics that deals with the occurrence of a random event.

Given,

Amounts of weight that male college students gain during their freshman year are normally distributed

mean of μ = 1.1 kg and

Standard deviation of o= 4.6 kg.

Z score=x-μ/o

=25-1.1/4.6

=23.9/4.6

=5.196

Z score=x-μ/o

=25-1.1/0

=0

Z score=25-1.1/3

=23.9/3

=7.966

By observing the z table the probability that their mean weight gain during freshman year is between 0 kg and 3 kg is 70%

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Answer:

1/12 gallons

Step-by-step explanation:

We can determine how much more hot chocolate than apple cider die Joe serve by subtracting 1/12 from 1/6.

Step 1:  Since 1/12 has the bigger denominator and 6 * 2 = 12, let's give 1/6 the same denominator as 1/12 by multiplying the entire fraction by 2/2

(1/6) * (2/2) = 2/12

Step 2:  Now we can subtract 1/12 from 2/12:

2/12 - 1/12 = 1/12

Thus, Joel served 1/12 more gallons of hot chocolate than apple cider.

Answer:

11/100 is the simplified fraction for 11/100. it stays the same

Step-by-step explanation:

Answer:

Exact Form(Simplest form):  11/100

Decimal Form:  0.11

Percentage Form: 11%

Step-by-step explanation:

Its already in Simple Form

The amount of money earned by Zach each week will be equal to $9 per week.

The four basic operations of arithmetic can be used to add, subtract, multiply, or divide two or even more quantities.

They cover topics like the study of integers and the order of operations, which are relevant to all other areas of mathematics including algebra, data processing, and geometry.

As per the given data in the question,

Total amount earned by Zach = $36

The time taken to earn the amount = 4 weeks

Then, the amount earned each week will be.

= $36/4

= $9 per week

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Answer:

The value of x is 0.624.

Property used: Symmetric property of equality

Step-by-step explanation:

The expression to be solved is:

\(f (x) = 2.5\cdot (6.25x+0.5)-11\)

Compute the solution as follows:

\(f (x) = 2.5\cdot (6.25x+0.5)-11\)

       \(=(2.5\times 6.25\ x)+(2.5\times 0.5)-11\)

∵ Distributive property (a (b + c) = ab + ac)

       \(=15.625x+1.25-11\\=15.625x-9.75\)

Substitute equation equal to 0 to compute the value of x as follows:

\(0=15.625x-9.75\\\\15.625x=9.75\\\\\)

∵ Symmetric property of equality if a = b then b = a

\(x=\frac{9.75}{15.625}\\\\x=0.624\)

Thus, the value of x is 0.624.

Answer:

lol

Step-by-step explanation:

1.)  2.5(6.25x + 0.5) = 11

​2.)  15.625x + 1.25 = 11  

3.)  15.625x = 9.75

​4.)  x = 0.624

Reason

1.)  Given

2.)  Distributive Property  

3.)  Subtraction Property of Equality

4.)  ​Division Property of Equality

Answer:

98.5

Step-by-step explanation:

64.4 x 2= 128.8

325.8-128.8=197.0

197 /2 = 98.5

brainliest plzz

Answer:

Hey mate,

here is your answer. Hope  it helps you.

Step-by-step explanation:

x+x+64.4+64.4=325.8

2x+ 128.8 =325.8

2x = 325.8 - 128.8

2x = 197

x= 197/2

=98.5 inches

Answer:

Step-by-step explanation:

133 ft

73 is the rate of the eastbound train while The speed of the westbound train is 59 miles per hour.

speed is described as. the pace at which an object's location changes in any direction. Speed is defined as the distance traveled divided by the travel time. Speed is a scalar quantity because it just has a direction and no magnitude.

Given, Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 14 miles per hour slower than the westbound train.

Eastbound train:

time = 3 hrs, rate = x mph, distance = 3x miles

Westbound train:

time = 3 hrs ; rate = x-14 ; distance = 3x-42 miles

3x + 3x - 42 = 480

6x = 438

x = 73 (rate of the eastbound train)

To find the rate of the westbound train:

rate = x -14

rate = 73 - 14

rate of westbound train = 59

Therefore, The speed of the westbound train is 59 miles per hour.

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The values of the following functions are:

a. (f ºg)(x) = x+2

b.  (g º f)(x) = 3x + 14

c.  (f º g)(-1) = 3

d.  (g º f)(-1) = 11

Given:

f(x) = x+4 and

g(x) = 3x+2

we are asked to determine the following functions:

a.  (f º g)(x)

⇒ f(g(x))

⇒ f(3x+2)

⇒  (f º g)(x) = (3x+2)+4

= 3x+6

divide by 3

= x+2

b.  (g º f)(x)

⇒ g(f(x))

⇒ g(x+4)

⇒  (g º f)(x) = 3(x+4)+2

= 3x+12+2

= 3x+14

c.  (f º g)(-1)

⇒ f(g(-1))

⇒ f(3(-1)+2)

⇒ f(-3+2)

⇒ f(-1)

⇒  (f º g)(-1) = -1+4

= 3

d.  (g º f)(-1)

⇒ g(f(-1))

⇒ g(-1+4)

⇒ g(3)

⇒  (g º f)(-1) = 3(3)+2

= 11

Hence we get the required answer.

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Answer: False

Step-by-step explanation:

25% of the data is between Q1 and the median.

Answer:

64:343

Step-by-step explanation:

The ratio of the volume of the small pyramid to the volume of the large pyramid is equal to the cube of the ratio of their corresponding linear dimensions.

In this case, the ratio of the heights is 4/7, so the ratio of the volumes is (4/7)^3 = 64/343.

Therefore, the ratio of the volumes of the two pyramids is 64:343.

Here is a more detailed explanation:

The volume of a pyramid is given by the formula:

V = ⅓*Bh

where V is the volume, B is the area of the base, and h is the height.

Since the two pyramids are similar, the ratio of their areas is equal to the square of the ratio of their corresponding ki linear dimensions.

In this case, the ratio of the heights is 4/7, so the ratio of the areas is (4/7)^2 = 16/49.

Therefore, the ratio of the volumes of the two pyramids is:

(1/3) * (16/49) * (4/7) = 64/343

Using the cosine ratio, the distance between Dimitri and Sarah is calculated as approximately 12.4 m.

The cosine ratio is a trigonometric ratio that represents the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle. It is calculated by dividing the length of the adjacent side by the length of the hypotenuse.

Using the cosine ratio, we have:

Reference angle (∅) = 72 degrees

Hypotenuse length = 40 m

Adjacent length = distance between Dimitri and Sarah = x

Plug in the values:

cos 72 = x/40

x = cos 72 * 40

x ≈ 12.4 [to one decimal place]

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