Two lines are perpendicular if they cross a 45° angle true or false​

Final answer:

To determine the maximum number of days Jim can rent a car, set up the inequality 21d + 25 ≤ 115. Solving for 'd', Jim can rent a car for a maximum of 4 days.

Explanation:

To determine the maximum number of days that Jim can rent a car, we need to set up an inequality using the given information. Let's denote the number of days as 'd'. The rental cost per day is $21, so the total cost for 'd' days would be 21d. The cost for the miles driven is $0.10 per mile, and Jim will travel 250 miles. So the cost for the miles driven would be 0.10 * 250 = $25. Now, we can set up the inequality:

21d + 25 ≤ 115

To solve for 'd', we need to subtract 25 from both sides of the inequality:

21d ≤ 90

Now, divide both sides of the inequality by 21:

d ≤ 90/21

d ≤ 4.29 (approx)

So, Jim can rent a car for a maximum of 4 days.

Answer:

sin ( 2π(270)*t )

Step-by-step explanation:

Solution:-

- The frequency of the hum is denoted as k = 270 Hz.

- The displacement of the hum is modeled by a sinusoidal function.

- The trigonometric modelling of frequency generating systems is given in the following general form:

                               sin ( w*t ) + c

- Where,

              A: The amplitude of displacement e

              w: The angular speed of the hum

              c : The initial condition of displacement.

- Here, we will assume A = 1 and c = 0. The hum starts from time t = 0 seconds.

- The angular speed is the unit of speed that denotes the number of cycles in radians are undergone by the frequency generator device/person in unti time t.

- The angular speed is given by the following relation:

                             w = 2πk

                             w = 2π(270).

- The general model of the hum would be:

                             sin ( 2π(270)*t )

Answer:

Y=-3/5+3

Step-by-step explanation:

You need to move y’all variables to one side except Y. Then divide them by 5 to get rid of the 5 attached to the Y. So then you have Y=Mx+b.

Answer:

Step-by-step explanation:

subtract 7 on both sides

40-7=33

-11b=33

divide -11 on both sides

b=-3

Answer:

B=-3

Step-by-step explanation:

-11b+7=40

Subtract -7 from both sides

-11b-7=40-7

11b=33

divide by -11

11b/-11=33/-11

-11 and -11 cancel out, leaving you with B=-33/11

thus B=-3

Answer:

15

Step-by-step explanation:

The Number of Spearmint gum are 27 pieces

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

Let the total number of peppermint gum and spearmint gum in the container is X

Ratio of peppermint gum to spearmint gum=  2 : 3.

Total ratio = 2+ 3=5

we are given that peppermint gum are 18 pieces , so total number of gums  will be calculated as;

Ratio of peppermint/ Total ratio x Total number of gums = Number of peppermint;

2/5 x X= 18

X=(18X 5) / 2 = 45

X=  Total number of gums = 45

Ratio of spearmint/ Total ratio x Total number of gums = Number of spearmint;

3/5 x 45= 27

Therefore Number of Spearmint gum are 27 pieces

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Final answer:

The probability of Tim teeing off with a white ball and putting with an orange ball is 0.0331. The events are dependent.

Explanation:

To calculate the probability of Tim teeing off with a white ball and putting with an orange ball, we need to consider the total number of balls in the bag and the number of white and orange balls.

There are a total of 9 white balls, 6 yellow balls, 1 orange ball, and 1 pink ball in the bag. The probability of Tim teeing off with a white ball is 9 out of 17, since he can choose any of the 9 white balls out of the total 17 balls. After Tim tees off with a white ball, there are now 8 white balls left in the bag.

Next, Tim needs to putt with an orange ball. The probability of Tim putting with an orange ball is 1 out of 16, since there is 1 orange ball left in the bag and a total of 16 balls.

To find the probability of both events happening, we multiply the two probabilities:

P(white, then orange) = P(white) × P(orange|white) = 9/17 × 1/16 = 9/272 = 0.0331 (rounded to four decimal places).

The events of teeing off with a white ball and putting with an orange ball are dependent events, as the outcome of the first event affects the probability of the second event.

Answer: he has 22$

Step-by-step explanation:

34-12=22

Answer:

$22

Step-by-step explanation:

$34 total

$12 for the tickets

34-12=22

Jose has 22 dollars to spend on food and games

Answer:

•The subset consists of all of the outcomes where the team is made up of one boy and one girl

• the subset consists of all of the outcomes where the team is not made up of all boys and not made up of all girls.

Answer:

A & D

Step-by-step explanation:

KHAN

Given:

The circle has a diameter of 30 cm and a chord of 10 cm is drawn.

Radius of the circle = 15 cm

Half of the chord = 5 cm

We need to determine the distance of chord from the center of the circle.

Distance of chord from the center of the circle:

Let us use the Pythagorean theorem, to find the distance between the center and the chord.

Let d denote the distance between the center and the chord of the circle.

Thus, we get;

[tex]15^2=d^2+5^2[/tex]

[tex]225=d^2+25[/tex]

[tex]200=d^2[/tex]

Taking square root on both sides, we get;

[tex]14.14=d[/tex]

Thus, the distance between the center and the chord of the circle is 14.14 cm.

Hence, Option A is the correct answer.

The chord is 14.14 cm far from the center of circle.

First option is correct.

The perpendicular drawn from center to the chord, is always divide the chord into two equal parts.

Radius of circle =  d/2 = 30/2 = 15 cm

A diagram is attached below, in which distance between center and chord is represented by x .

applying Pythagoras theorem

                  [tex]x=\sqrt{(15)^{2} -5^{2} }=\sqrt{225-25}=\sqrt{200} =14.14 cm[/tex]

Thus, the chord is 14.14 cm far from the center of circle.

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To solve this problem, set up a system of equations with x and y representing the number of buttons. If there are 20 Weights of buttons in total, 20 of them weigh 12 grams and none weigh 8 grams.

To solve this problem, we can set up a system of equations. Let x be the number of buttons weighing 12 grams, and y be the number of buttons weighing 8 grams.

We can then write the following equations based on the information given:

x + y = total number of buttons

12x + 8y = total weight of the buttons

Substituting the given values, we have:

x + y = total number of buttons

12x + 8y = 240

From the first equation, we can express y in terms of x:

y = total number of buttons - x

Substituting this into the second equation:

12x + 8(total number of buttons - x) = 240

Simplifying:

12x + 8total number of buttons - 8x = 240

4x + 8total number of buttons = 240

4x = 240 - 8total number of buttons

4x = 8(30 - total number of buttons)

x = 2(30 - total number of buttons)

Since x and y represent the number of buttons, they must be whole numbers.

We can test different values for the total number of buttons to find a solution that satisfies this condition.

For example, if we assume there are 20 buttons in total:

x = 2(30 - 20) = 2(10) = 20

y = 20 - 20 = 0

Therefore, if there are 20 buttons in total, 20 of them weigh 12 grams and none weigh 8 grams.

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The probable question may be:

In a box, there are two types of buttons with different weights. One type of button weighs 12 grams, and the other type weighs 8 grams. If the total weight of the buttons in the box is 240 grams, how many buttons of each type are in the box?

Answer:

a) v=6

b) s= u^2 - v^2 : -2a

Step-by-step explanation:

v^2=u^2+2as

u=12, a=-6, s=9

a)

(12)^2= 12 * 12= 144

v^2=u^2+2as

v^2=(12)^2+ 2*(-6)*9

v^2=144+(-12)*9

v^2=144+(-108)

v^2=36

v=6

b)

v^2=u^2+2as

-2as=u^2 - v^2

s= u^2 - v^2 : -2a

check for s

s= 144 - 36 : -2(-6)

s= 108 : 12

s=9 (equal vs the given)

Answer:

5

Step-by-step explanation:

(15)(x+3) = (12)(2x) -->

15x + 45 = 24x -->

45 = 9x -->

5 = x

Answer:

True mean population distraction time with 90% confidence is

C.I[103.34 ,112.66] at 108

Step-by-step explanation:

Given:

Study Average hrs =2.1 =2.1 *60=126 minutes

For sample mean =1.8 *60= 108 minutes

S.D=20  and n=50

To Find:

True mean population distraction time with 90% confidence,

Solution:

90% C.I. means 90 % will fall in true mean and other will not .

So for that calculating the

Standard error=S.D/Sqrt(n)

S.E=20/Sqrt(50)

S.E=2.828

For 90% Confidence interval Z=1.65

C.I= mean±Z*Standard error

C.I=108±1.65*2.828

C.I=108±4.662

Hence C.I will range from 103.34 to 112.66

Study mean =126 minutes .

Here  it ranges from 103.34 to 112.66

In this exercise we have to use the knowledge of probability to calculate this we will use percentage as:

[tex]C.I= 108[/tex]

Given the following information in the text we find that:

Then calculating the probability we find that:

[tex]Standard error=S.D/\sqrt(n)\\ S.E=20/\sqrt(50)\\ S.E=2.828\\ Z=1.65\\ C.I=108+4.662 [/tex]

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Answer:

V = 7776 pi m^3

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

We need to know the radius

r = d/2 = 36/2 = 18

V = 4/3 pi (18)^3

V = 4/3 * pi *5832

V = 7776 pi

We cannot approximate pi since we want the exact answer

Answer:

7776π cubic meters.

Step-by-step explanation:

Recall the volume formula for a sphere is

V = (4/3) π r^3

r = (1/2)*diameter = (1/2)*36 m = 18 meters

V = (4/3)*π*(18)^3 = 24,429.02447 cubic meters

However the problem wants an exact answer, and not an approximation, therefore I will express the volume in terms of simplified expressions.

V = (4/3)*π*(18)^3 = (4/3)*π * (3*6)^3  =  4 *π * (1/3)*(3^3) *(6^3)

V =  4 *π * (1/3)*(3^3) *(6^3)  = 4*π * 9 * 6^3 = 7776π cubic meters.

Answer:

Elaine is the outside hitter in Freshman Year

Kelly is the setter in Junior Year

Shannon is the middle blocker in Sophomore Year

Please mark my answer as brainiest

Elaine is the freshman outside hitter, Kelly is the junior setter, and Shannon is the sophomore middle blocker.

Let's analyze the clues one by one:

Based on the given clues, we can conclude that:

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Final answer:

The volume of the sphere is 113.04 cubic inches.

Explanation:

The volume of a sphere can be calculated using the formula V = (4/3)×πr³. In this case, the radius is given as 3 inches. Plugging in the value, we get:

( V)   volume of the sphere = (4/3)×3.14×3³ = (4/3)×3.14×27 = 113.04 cubic inches.

Answer:

3000 N

Step-by-step explanation:

The work done by a force on an object is given as the product of the force applied on the object and the distance moved by the object.

Mathematically:

W = F * d

The force applied by the man is 150 N and the distance moved is 20 m. Hence, the work done by the man is:

W = 150 * 20 = 3000 J

The work done by the man is 3000 Joules.

Answer:

Y = 45*p(y) / (1 - p(y))    if I knew what p(y) is, we can find how many yellow marbles there are.   p(y) = probability of choosing yellow.

Step-by-step explanation:

Total marbles =  35 + 10 + yellow

If probability of choosing yellow =p(y) = yellow/Total

p(y) =  Y/(35 + 10 + Y)

Solve for Y,

p(y)*(35 + 10 + Y) = Y

45*p(y) + p(y)*Y = Y

45*p(y) = Y - p(y)*Y

Y = 45*p(y) / (1 - p(y))

To find the number of yellow marbles in the bag, set up an equation using the given probabilities. Simplify the equation and solve for the total number of marbles. Finally, substitute the value of  into the equation to determine the number of yellow marbles.

To solve this problem, we need to find the number of yellow marbles in the bag. Given that there are 35 blue marbles and 10 red marbles, we can subtract these two numbers from the total number of marbles to find the number of yellow marbles. Let's denote the number of yellow marbles as 'y'. We can set up the equation: 35 + 10 + y = total number of marbles. Since the probability of selecting a yellow marble is , we know that the ratio of yellow marbles to the total number of marbles is . This can be written as: y/total number of marbles = . Now, we can solve for 'y'.

By cross multiplying the ratio equation, we have: y = total number of marbles * . Now we can substitute this value of 'y' in the first equation: 35 + 10 + (total number of marbles * ) = total number of marbles. Simplifying this equation, we find: 45 + (total number of marbles * ) = total number of marbles. Rearranging the equation, we have: (total number of marbles * ) - total number of marbles = -45. Factoring out 'total number of marbles' from the left side, we get: total number of marbles * ( - 1) = -45. Dividing both sides of the equation by ( - 1), we find: total number of marbles = 45 / ( - ). Plugging in the value of , we can evaluate the expression: total number of marbles = 45 / ( - ) = - . Therefore, there are - yellow marbles in the bag.

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Answer: 3,4,7

Step-by-step explanation:

Answer:

18.75

Step-by-step explanation:

To identify the vertices of this triangle, you need to find the x intercepts of both lines, as where their solutions match. Let's start with setting them equal to each other. If you subtract 10 from both sides of the second equation, then both equations are left equaling zero.  You can also multiply both sides of the equation by -1 for easier solving later Now:

3x-2y=-2y-x+10

4x=10

x=2.5

y=3.75

This shows that the height of this triangle is 3.75. Now, to find the x intercepts of both equations, we simply have to plug in the y value as 0. For the first one, 3x-0=0, so x=0 as well and the coordinates are (0,0). For the second one, x+0=10, so x=10 and the coordinates are (10,0). This shows that the base is 10-0=10 units long. The formula for the area of a triangle is [tex]\frac{bh}{2}=\frac{10\cdot3.75}{2}=18.75[/tex]. Hope this helps!

Formula for the area of a circle:

A = πr²                   [A = area        r = radius]

The radius is [tex]\frac{1}{2}[/tex] (half) the diameter. Since the diameter = 10cm, the radius = 5cm.

You know:

r = 5cm         Substitute/plug this into the equation

A = πr²

A = π(5)²    

A = 25π  ->     A = 25(3.14)

A = 78.5cm²

The area of the circle when the diameter is 10 cm should be [tex]78.5\ cm^2[/tex].

Since the diameter is 10 cm

We know that

The diameter should be

[tex]= \pi r^2\\\\= 3.14\times 5^2\\\\= 25\times 3.14\\[/tex]

= [tex]78.5\ cm^2[/tex]

Hence, The area of the circle when the diameter is 10 cm should be [tex]78.5\ cm^2[/tex].

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Answer:

Infinitely many solutions

Step-by-step explanation:

5-x= -(x - 5) ➡ 5 - x = -x + 5 add x to both sides and subtract 5 from both sides

5 - x - 5 + x = -x + x - 5 + 5 ➡0 = 0 in this case we say the equation has infinitely many solutions because whatever value you give for x there will always be a solution.

Answer:

$ 404.17 every month

Step-by-step explanation:

$19,700/2 =$9,850

$9,850-$5,000= $4,850

$4,850/12 = $404.1666666666667  

rounds to $ 404.17

Given:

Points on the line are (-2, 4) and (-4, -8).

To find:

The equation of a line.

Solution:

[tex]x_1=-2, y_1=4, x_2=-4, y_2=-8[/tex]

Slope of the line:

[tex]$m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Substitute the given points.

[tex]$m=\frac{-8-4}{-4-(-2)}[/tex]

[tex]$m=\frac{-12}{-4+2}[/tex]

[tex]$m=\frac{-12}{-2}[/tex]

m = 6

Point-slope formula:

[tex]y-y_1=m(x-x_1)[/tex]

Substitute [tex]x_1=-2, y_1=4[/tex] and m = 6

[tex]y-4=6(x-(-2))[/tex]

y - 4 = 6(x + 2)

Substitute [tex]x_1=-4, y_1=-8[/tex] and m =6 in point-slope formula.

[tex]y-(-8)=6(x-(-4))[/tex]

y + 8 = 6(x + 4)

Option A and Option D are the correct answers.

Therefore y - 4 = 6(x + 2) and y + 8 = 6(x + 4) are the equations describes the shown line.

Answer:

The mean is 4.5 and the standard deviation is 1.44.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean of the uniform probability distribution is:

[tex]M = \frac{(a + b)}{2}[/tex]

The standard deviation of the uniform probability distribution is:

[tex]S = \sqrt{\frac{(b-a)^{2}}{12}}[/tex]

Uniformly distributed random variable ranging from 2 to 7.

This means that [tex]a = 2, b = 7[/tex].

So

[tex]M = \frac{(2 + 7)}{2} = 4.5[/tex]

[tex]S = \sqrt{\frac{(b-a)^{2}}{12}} = \sqrt{\frac{(7 - 2)^{2}}{12}} = 1.44[/tex]

The mean is 4.5 and the standard deviation is 1.44.

The question is:

A cake recipe calls for 550 grams of flour. About how many pounds of flour do you​ need? Use the conversion factors (1 ounce)/(28.4 grams) and (1 pound)/(16 ounces).

Answer:

About 1.2 pounds of flour is needed.

Step-by-step explanation:

Given that the cake recipe calls for 550 grams, we want to determine about how many pounds of flour we need.

This simply means we want to convert 550 grams to pounds.

First, we were given (1 ounce)/(28.4 grams)

This implies that

1/28.4 = x/550 ..............................(1)

Where x is 550 grams in ounce.

Solving (1)

28.4x = 550

=> x = 550/28.4

≈ 19.3662

That is 550 grams is equal to 19.3662 ounce

Next, we are given the ratio (1 pound)/(16 ounce). We then convert 19.3662 ounce to pound

Let y be 19.3662 ounce in pound

=> 1/16 = y/19.3662

16y = 19.3662

y = 19.3662/16

≈ 1.2

That is 19.3662 ounce is equal to 1.2 pounds.

Therefore, 550 grams is equal to 1.2 pounds, and it is the amount of flour needed.

You would need approximately 1.210 pounds of flour for the cake recipe.

To convert grams to pounds, we can use the conversion factor:

1 pound = 16 ounces

And we also have the conversion factor:

1 ounce = 28.4 grams

First, we'll convert grams to ounces, and then ounces to pounds.

Given that the recipe calls for 550 grams of flour, let's calculate the amount in pounds.

Step 1: Convert grams to ounces.

550 grams x (1 ounce / 28.4 grams) = 19.366 ounces

Step 2: Convert ounces to pounds.

19.366 ounces x (1 pound / 16 ounces) = 1.210 pounds

Therefore, you would need approximately 1.210 pounds of flour for the cake recipe.

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Answer:

(5.5,5)

Step-by-step explanation:

Answer:

The coordinate of the midpoint is (5.5,5)

Step-by-step explanation:

To find the midpoint between two points, find the average of the x coordinates and the midpoint of the y coordinates.

x=(8+3)/2

x=11/2

x=5.5

y=(2+8)/2

y=10/2

y=5

The coordinate of the midpoint is (5.5,5)

Answer:

Dependent event because the sample space depends on the first event

Step-by-step explanation:

10 marbles total

4 green

6 yellow

1st pick green:  Probability=  4/10

2nd pick yellow: Probability= 6/9

Dependent event because the sample space depends on the first event

Answer:

The width is 8 yards.

Step-by-step explanation:

[tex]\frac{461.76}{7.8\cdot7.4}=8[/tex]. Hope this helps!