help for 1,2,3 plz ASAP If correct U get brainiest

Answer:

what percent of 60 is 45, = 45/60 = x/100 = 75%,  16 is 20% of what number = 16/x = 20/100 = 80 not 75,  12.6 is 28%of what number = 45

Step-by-step explanation:

just trust me this would be to long to put on this space but if you have any queztions on why I ordered it this way just ask me.

There are 90 ways to choose the students who compete first and second in the spelling bee.

Since the order of choosing students matters in this question, we need to calculate the number of permutations. 10 students are participating in the spelling bee, and we need to choose 2 of them for the first and second place. The first student can be chosen in 10 ways, and the second student can be chosen in 9 ways (since we cannot choose the same student twice). Therefore, the number of ways to choose first and second place in the spelling bee is:

Number of ways = 10 x 9 = 90

Therefore, there are 90 ways to choose the students who compete first and second in the spelling bee.

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Answer:

1 out of a 50% chance

Step-by-step explanation:

hope it helps

Answer:

It's false see 4 cannot go into 30 can I have

brainly?:)

Step-by-step explanation:

f(g(x)) = 21x + 2.

g(f(x)) = 21x - 46.

A. To find f(g(x)), we substitute g(x) for x in the expression for f(x):

f(g(x)) = 3g(x) - 7 = 3(7x+3) - 7 = 21x + 2

B. To find g(f(x)), we substitute f(x) for x in the expression for g(x):

g(f(x)) = 7f(x) + 3 = 7(3x-7) + 3 = 21x - 46

C. To determine if f and g are inverse functions of each other, we need to check if f(g(x)) = x and g(f(x)) = x for all values of x.

From part A, we have:

f(g(x)) = 21x + 2

So, f(g(x)) ≠ x in general, which means that f and g are not inverse functions of each other.

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If Samantha works in a department store selling clothing and she makes a guaranteed salary of $500 per week but is paid a commission on top of her base salary equal to 25% of her total sales for the week, then Samantha would make $662.5 in a week in which she made $650 in sales and she would make 500 + 0.25 xx in a week in which she made xx dollars in sales.

The amount of money Samantha makes in a week can be given by an algebraic expression.

Amount of money Samantha makes in a week = Salary per week + 25% of her total sale

Amount of money Samantha makes in a week = 500 + 0.25 x

Here x is the sales Samantha made in a week

If she made $650 in sales in a week :

Amount of money Samantha makes in a week = 500 + 0.25(650)

Amount of money Samantha makes in a week = 500 + 162.5

Amount of money Samantha makes in a week = $662.5

If she made xx dollars in sales in a week :

Amount of money Samantha makes in a week = 500 + 0.25 x

Amount of money Samantha makes in a week = 500 + 0.25 xx

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Answer:

The gradient of the line segment between the two points is -1

Step-by-step explanation:

The gradient of the line segment between two points is also known as the slope,

We  can find this by using the formula; y₂ - y₁ /  x₂ - x₁

The points given to us are;(-1,2) and (-2,3).

This implies x₁ = -1  ,     y₁=2         x₂ =  -2        y₂= 3

We can now proceed to insert our values into the formula;

Gradient = y₂ - y₁ /  x₂ - x₁

               = 3 - 2  /  -2-(-1)

                = 1  /  -2 + 1

                 =1/-1

Gradient = -1

Therefore the gradient of the line segment between the two points is -1

Heyy I'm the person who helped you with the test. Anyway I disagree with the person who answered on top. The correct answer is -5/2!

Answer:

4212 square feet.

Step-by-step explanation:

If the blueprint's scale is 1 inch : 9 feet.

Square both sides

(1in)² = (9ft)²

1in² = 81ft²

Given the  gym's  area as 52 square inches, hence;

52in² = x

Divide both expressions

1/52 = 81/x

x = 52 * 81

x = 4212ft²

Hence the area of the actual gym  is 4212 square feet.

The first quartile of the data set is 48.

Here is a list of 27 scores on a Statistics midterm exam: 20, 30, 31, 32, 46, 48, 49, 52, 54, 59, 61, 69, 71, 73, 74, 79, 81, 81, 81, 85, 86, 87, 88, 91, 94, 96, 97. Find Q2 and Q1.The median is the middle number of a data set arranged in ascending or descending order. There are 27 numbers in this data set. As a result, the median will be the 14th value when sorted in ascending order. The data set is given in ascending order. As a result, the median of the data set is 81. To find the first quartile or Q1 of this data set, the formula below will be used: Q1 = (n+1)/4th term Q1 = (27+1)/4th termQ1 = 7th terTo find the 7th term, the data set must be arranged in ascending order. The 7th term of the data set is 48.Therefore, the first quartile of the data set is 48.

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Answer:102

Step-by-step explanation:

The interior angles of a triangle have to measure 180 degrees, which is an isosceles triangle, and 39+39=78.

180-78=102.Therefore the  answer is 102

Answer:

Slope: 4

Y-interecept: -2

Step-by-step explanation:

To find the slope, use rise over run. Go up from the y-intercept and over until you hit another exact point.

To find the y-intercept, just find the point that is on the y-axis.

Hannah, this is the solution:

Step 1: We need to add up the number of voters and the number of registered voters that did not vote.

In consequence,

3'121,201 + 3'349,227 = 6'470,428 registered voters

Step 2: Now we need to calculate the percentage of registered voters that did not vote, as follows:

3'349,227 / 6'470,428 = 0.5176

0.5176 = 51.76%

Step 3: Now we will round to three decimal places, this way:

0.5176 = 0.518 (rounding to three decimal places)

0.518 = 51.8%

Step 4: The answer will be that the probability that a registered voter did not vote in the election is approximately 51.8%

Answer:

126  miles

Step-by-step explanation:

1/4 inches = 9 miles

Divide 3.5 by 1/4 or 0.25

3.5 ÷ 0.25 = 14

Multiply 14 by 9

14 x 9 = 126

126 miles

√131 lies between 11 and 12.

The numbers that include natural numbers and zero are called whole numbers.

Given is the square root of 131.

We can write the square root of 131 as -

√131 = 11.45

We can write the whole numbers as -

11 < 11.45 < 12

Therefore, √131 lies between 11 and 12.

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Equation of a line

The slope-intercept form of the line can be written as follows:

Where m is the slope and b is the y-intercept

We have two points through which the line passes. If we substitute them into the equation, we can find the values of m and b.

Using the point (-4,-6):

Using the point (4,4):

Subtract the second equation from the first equation:

Solve for m:

Substituting into the second equation:

Finally, the equation of the required line is:

Answer:

100 cm^2.

Step-by-step explanation:

Area of shaded part = area of the whole rectangle - area of the triangle

Area of rectangle = 14 * 10 = 140.

Area of the triangle = 1/2 * base * height

= 1/2 * 10 * (14-6)

= 5 * 8

= 40

So required area = 140 - 40 = 100 cm^2.

Answer:

5x+3x+11x which gives you 18x

Step-by-step explanation:

Might Help for a Answer:

13x-8+7x+4+3x=180

We move all terms to the left:

13x-8+7x+4+3x-(180)=0

We add all the numbers together, and all the variables

23x-184=0

We move all terms containing x to the left, all other terms to the right

23x=184

x=184/23

x=8

Answer:

(E/2)/n = k

So when doing this you have to isolate K since your solving for “k”.

In order to do this you have to perform the inverse of every variable or number in order to isolate K.

In this case you divide 2 and then N.

Answer:6 6/13

Step-by-step explanation:

Multiply both sides of the equation by

4

.

3

x

=

7

⋅

(

4

)

−

x

3

⋅

4

Simplify each term.

Tap for more steps...

3

x

=

28

−

4

x

3

Move all terms containing

x

to the left side of the equation.

Tap for more steps...

13

x

3

=

28

Multiply both sides of the equation by

3

13

.

3

13

⋅

13

x

3

=

3

13

⋅

28

Simplify both sides of the equation.

Tap for more steps...

x

=

84

13

The result can be shown in multiple forms.

Exact Form:

x

=

84

13

Decimal Form:

x

=

6.

¯¯¯¯¯¯¯¯¯¯¯¯

461538

Mixed Number Form:

x

=

6

6

13

Answer:

3x + 4

x square

Step-by-step explanation:

this because the LCM is x square

x will enter x square once then multiply x by 3 that is 3x and x square will enter x square once so it will be 1 × 4 =4

Answer: 4/5 - 2

Step-by-step explanation:

Simply put it into a graphing calculator

Answer:

To find the number of foxes after 22 years, we need to substitute x = 22/11 into the equation:

y = 50 * 4^(22/11)

Using a calculator or approximation, this expression evaluates to approximately 68,719.

So, after 22 years there will be approximately 68,719 foxes.

Step-by-step explanation:

Answer:

  58 mph

Step-by-step explanation:

Let s represent the speed of the slower train. Then the distance apart is ...

  distance = speed × time

  s(5) +(s +11)(5) = 635

  10s = 580 . . . . subtract 55

  s = 58 . . . . . . .  divide by 10

The slower train's rate is 58 miles per hour.

Answer:

x=-7,y=-2

Step-by-step explanation:

2y=-32-4x

y=-16-2x

7x+(-16-2x)=-51

5x-16=-51

5x=-35

x=-7

<3

Red

Answer:

A one-sample t-test for a population mean is the appropriate test for the researchers' hypothesis. In this case, they want to test the hypothesis that the mean battery life of their new battery is greater than a known mean battery life of their older version. The one-sample t-test allows them to compare the mean of a sample to a known population mean and determine if the difference between them is statistically significant.

Given that a circle with radius 20 has a corresponding angle of 305°.

To find the coordinates of a point on the circle, we use the formula:`(r cos (θ), r sin (θ))`Here, `r = 20` and `θ = 305°`.

Substituting the values of `r` and `θ` in the formula, we get:`(20 cos (305°), 20 sin (305°))`

Using the values of trigonometric ratios, we can write:cos(305°) = cos(360° - 305°) = cos(55°) ≈ -0.5736sin(305°) = sin(360° - 305°) = sin(55°) ≈ 0.8192

Hence, the coordinates of a point on a circle with radius 20 corresponding to an angle of 305° are approximately `(-11.47, 16.38)`.

The coordinates of a point on a circle with radius 20 corresponding to an angle of 305° are approximately `(-11.47, 16.38)`

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Therefore , the solution of the given problem of surface area comes out to be  240 tiles will cover the floor.

Calculating how much space would be needed to fully cover the outside will reveal its overall size. The surroundings are considered when determining the same surface with a rectangular form. The surface area of something determines its overall dimensions. The amount of edges present in the space between a cuboid's four trapezoidal corners determines how much water it can hold inside.

Here,

Let's first determine how many 6 inch squares are required to span the floor:

=> 80 square feet is the size of the floor (8 feet by 10 feet).

We require the following because each 6-inch square spans an area of => (1/2) ft x (1/2) ft = 1/4 square feet:

=>  80 square feet 1/4 square foot = 320 tiles in a row of 6 inch tiles.

Since a 12 inch square encompasses a space that is 1 foot by 1 foot, we require:

=>  80 square feet /  12 inch square tile,

which equals 80 tiles.

Using 12 inch squares rather than 6 inch squares allows us to save the following amount of tiles:

=> Number of 6 inch tiles - Number of 12 inch tiles = 320 - 80 = 240 tiles

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The expected value of the number of points for one roll is -1/3

To find the expected value of the number of points for one roll, we need to consider the probabilities of the outcomes and their associated point values.

Jolene tosses two number cubes, and the sum of the two numbers determines the points she earns. The possible sums are 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12.

Let's calculate the probabilities of each sum:

Sum 2: There is only one way to roll a sum of 2 (1, 1). The probability is 1/36.

Sum 3: There are two ways to roll a sum of 3 (1, 2 and 2, 1). The probability is 2/36.

Sum 4: There are three ways to roll a sum of 4 (1, 3; 2, 2; 3, 1). The probability is 3/36.

Sum 5: There are four ways to roll a sum of 5 (1, 4; 2, 3; 3, 2; 4, 1). The probability is 4/36.

Sum 6: There are five ways to roll a sum of 6 (1, 5; 2, 4; 3, 3; 4, 2; 5, 1). The probability is 5/36.

Sum 7: There are six ways to roll a sum of 7 (1, 6; 2, 5; 3, 4; 4, 3; 5, 2; 6, 1). The probability is 6/36.

Sum 8: There are five ways to roll a sum of 8 (2, 6; 3, 5; 4, 4; 5, 3; 6, 2). The probability is 5/36.

Sum 9: There are four ways to roll a sum of 9 (3, 6; 4, 5; 5, 4; 6, 3). The probability is 4/36.

Sum 10: There are three ways to roll a sum of 10 (4, 6; 5, 5; 6, 4). The probability is 3/36.

Sum 11: There are two ways to roll a sum of 11 (5, 6; 6, 5). The probability is 2/36.

Sum 12: There is only one way to roll a sum of 12 (6, 6). The probability is 1/36.

Now, let's calculate the point values for each sum:

Sum 6 or 12: Jolene earns 8 points with a probability of (5/36 + 1/36) = 6/36.

Other sums: Jolene loses 2 points with a probability of (1 - 6/36) = 30/36.

To calculate the expected value, we multiply each point value by its corresponding probability and sum them up:

Expected Value = (8 * 6/36) + (-2 * 30/36)

= (48/36) - (60/36)

= -12/36

= -1/3

Therefore, the expected value of the number of points for one roll is -1/3, which means Jolene can expect to lose 1/3 of a point on average for each roll.

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The size of the tire that he needed to buy is the one with a circumference of 75.4 inches.

Given that,

while working as a reace driver, Jalen needed to replace the tire on his car.

Tire is in the shape of a circle.

Diameter of the circle = 24 inches

Radius of the circle = 24/2 = 12 inches

We have to find the circumference of the tire.

Circumference = 2πr, where r is the radius.

Substituting,

Circumference = 2πr = 2π × 12 = 24π = 75.4 inches

Hence the size of the tire is 75.4 inches.

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