Pick the expression that matches this description??

Answer:-2,21

Step-by-step explanation:

The coordinates for Paulo's commute time 2 days ago are (-2, (y1+y2)/2), where y1 is the commute time 8 days ago and y2 is the commute time 9 days ago, as they represented halfway between those times.

To find the coordinates for Paulo's commute time 2 days ago, we need first to know the commute times 8 and 9 days ago. We are told that his commute time 2 days ago was halfway between his commute times 8 and 9 days ago. We can assume for the sake of this explanation that the commute time 8 days ago is represented by the point (-8, y1) and 9 days ago by (-9, y2).

To find the average of these two times (which would give us the commute time for 2 days ago), we add y1 and y2 and then divide by 2. This gives us the average commute time (y value) two days ago. Therefore, recognizing that '2 days ago' is represented as -2 on the x-axis, the coordinates for Paulo's commute time 2 days ago would be (-2, (y1+y2)/2).

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Answer:

75/99

Step-by-step explanation:

Anything that has something repeated over and over can be put over 9's

75/99 should equal 0.75757575757575...

Answer:

Each person will get 8 whole cookies.

Step-by-step explanation:

[tex]2\frac{3}{4} (12) = 33\\33/4 = 8.25[/tex]

For 20 shirts Eric has

20×2=40 ties

After shopping Eric has 50 shirts

So

20 shirts 50 shirts

40 ties x ties

[tex] \frac{20}{40} = \frac{50}{x} \\ x = \frac{50 \times 40}{20} \\ x = 100[/tex]

Answer: He would have 100 ties

If he has 2 ties for 1 shirt he will have

2×20=40 ties for 20 shirts, so for 50 shirts ge would have

50×2=100 ties

Answer: He would have 100 ties

Answer

5 ties, as the equivalent ratio would be 50:5, meaning 50 shirt to 5 ties  

Step-by-step explanation:  What should have been recognized is that if 20 shirts align to 2 ties, that means that for every ten shirts you would have 1 tie. The ratio doesn't change. That means that if you have 30 shirts you would have 3 ties, and 40 shirts you would have 4 ties. The common multiples are  10 and 1, and are originally introduced through 20 and 2. The reality is from  the standpoint of unit rate, for every 10 shirts you have 1 tie. You simply just had to multiply once understanding this.

Answer:

(12/30)(11/29) = 22/145

This is an incomplete question, the image is shown below.

Answer : The fraction empty container is, [tex]\frac{7}{12}[/tex]

Step-by-step explanation :

As we are given that:

The capacity of container = 60 mL

In the given figure, the container is filled with 25 mL.

That means,

60 - 25 = 35 mL container is empty.

Now we have to calculate the fraction of it is empty.

The fraction of it is empty = [tex]\frac{\text{Capacity of empty container}}{\text{Total capacity of container}}[/tex]

The fraction of it is empty = [tex]\frac{35mL}{60mL}[/tex]

The fraction of it is empty = [tex]\frac{7}{12}[/tex]

Therefore, the fraction empty container is, [tex]\frac{7}{12}[/tex]

Answer:

x=3

Step-by-step explanation:

12/4

3

Answer:

About 950 springs could withstand between 194 and 206 lbs of force.

Step-by-step explanation:

Answer:

About 950 springs could withstand between 194 and 206 lbs of force.

Step-by-step explanation:

Using the concept of work rates of Ken and Bettina, it will take Bettina and Ken an additional 1 hour and 17 minutes to remove the rest of the snow.

Ken's work rate = 1 job / 3 hours = 1/3

Bettina's work rate = 1 job / 4 hours = 1/4

The proportion of work completed by Bettina working alone for 1 hour = 1/4

The proportion of work remaining for Bettina = 3/4 (1 - 1/4)

The combined work rate of Ken and Betetina = Ken's work rate + Bettina's work rate

Combined work rate = 1/3 + 1/4 = 4/12 + 3/12 = 7/12

Based on the combined work rate, we can find the time it takes for them to clear the remaining 3/4 of the snow:

Time = Job / Combined work rate Time = (3/4) / (7/12) = (3/4) * (12/7) = 9/7

Thus, we can conclude that it will take Bettina and Ken an additional 9/7 hours to remove the rest of the snow when working together, which is approximately 1 hour and 17 minutes.

Answer:

-72 - 24d    i hope this helps!   :)

Step-by-step explanation:

distribute the -8 to both the 9 and the 3d

-8 * 3d = -24d

-8 * 9 = -72

-72    and    -24d

Step-by-step explanation:

Since, y varies directly as x:

[tex] \therefore \: y = kx..(1) \\ (k = constant \: of \: proportionality) \\ at \: y = 21 \: and \: x = 7 \\ 21 = k \times 7 \\ k = \frac{21}{7} = 3 \\ plugging \: k = 3 \: in \: equation \: (1) \\ y = 3x..(2) \\ plugging \: \: y = - 5 \: in \: (2)\\ - 5 = 3x \\ x = \frac{ - 5}{3} \\ \: \: \: \: \: \: \huge \red{ \boxed{x = - \frac{5}{3} }}[/tex]

Answer:

X=-5/3

Step-by-step explanation:

Answer: The bottle was 1/2 full at 11:35 a.m. and doubled again after 5 minutes.

The bottle was 1/4 full at 11:30 a.m. and doubled twice after 10 minutes.

Exponential growth involves a constant multiplicative rate of change.

Step-by-step explanation: They are the right answer

Answer: 9 and 6

Step-by-step explanation:

It could be 9 and 6 because 9 times 6 equals 54.

The question asks for possible dimensions of a rectangular garden with an area of 54 square feet, which can be found by identifying factor pairs of 54, such as 1x54, 2x27, 3x18, or 6x9 feet.

The question involves finding possible dimensions for a rectangular garden that has an area of 54 square feet. The area of a rectangle is calculated by multiplying its length by its width. To find possible dimensions, we need to identify pairs of factors that, when multiplied together, give us the area of 54 square feet. Some pairs of factors for 54 could be:

These dimensions are just a few examples, and there are other combinations possible, as long as the product of the two dimensions equals 54 square feet.

Answer:

73 degrees

Step-by-step explanation:

The interior angle equals to 180. 73+37+ m<2 = 180. That means angle 2 is 70 degrees.

m<1 and m<C and equal due to alternate interior angles. That means angle 1 is 37 degrees.

We know angles 1 and 2 equal to 37 and 73. That means the angles are equal to the interior triangle. 70+37= 107.      180-107= 73 Degrees

73  is the measure of angle 1 in degrees

A triangle is a three-sided polygon that consists of three edges and three vertices.

Line p is parallel to side BC.

In Triangle ABC.

Angle A is 2, angle B is 73 degrees, and angle C is 37 degrees.

The interior angle equals to 180.

73+37+ m<2 = 180.

110+ m<2 = 180.

m<2 = 70

m<1 and m<C and equal due to alternate interior angles.

That means angle is 37 degrees.

m<1+m<2+37=180

37+70+m<1=180

m<1=180-37-70

m<1=73 degrees

Hence, 73  is the measure of angle 1 in degrees

To learn more on Triangles click:

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Given:

The random number table was used to generate the random sample of dollar amounts. The samples are 7.43, 5.38, 6.39, 6.53, 4.72, 5.58, 3.63, 7.43, 5.29, 5.70

We need to determine the mean of the given random sample.

Mean of the random sample:

The mean of the random sample can be determined using the formula,

[tex]Mean=\frac{\sum x_i}{n}[/tex]

Substituting the values, we have;

[tex]Mean=\frac{7.43+5.38+ 6.39+ 6.53+ 4.72+5.58+3.63+ 7.43+5.29+5.70}{10}[/tex]

[tex]Mean=\frac{58.08}{10}[/tex]

[tex]Mean=5.808[/tex]

Rounding off to the neatest hundredth, we get;

[tex]Mean=5.81[/tex]

Therefore, the mean of the random sample is 5.81

Hence, Option B is the correct answer.

Answer:

B

Step-by-step explanation:

-10x+y=4

10x-y=-4

the second equation is (-1)*the first equation

Answer:

its B

Step-by-step explanation:

Answer:

y= b - 10x

Step-by-step explanation:

find the value of B using formula for equation of a line

y=mx+b

Replace the known value for min slope y intercept form of equation

y= (-10) times  x+b

simplify the slope y intercept form of the equation

y = b - 10x

Answer:

y=9x+42

Step-by-step explanation:

x is the number of weeks.

He saves $9 each week.

He started with $42.

Hello there, to answer your question...

I hope this helps. :)

Answer:

surface area of a cylinder =  188.4 inches²

Step-by-step explanation:

to calculate the surface area of a cylinder given that

height of the cylinder = 9.5 inches

radius = 2.5 inches

recall that the formulae for calculating the surface area of a cylinder = 2πrh + 2πr²

surface area of a cylinder = 2πrh + 2πr²

surface area of a cylinder = 2 x 3.14 x 2.5 x 9.5 + 2 x 3.14 x (2.5)²

surface area of a cylinder = 6.28 x 2.5 x 9.5 + 6.28 x 6.25

surface area of a cylinder = 149.15 inches² + 39.25inches²

surface area of a cylinder =  188.4 inches²

Answer:

188.4 inches squared

Step-by-step explanation:

to calculate the surface area of a cylinder given that

height of the cylinder = 9.5 inches

radius = 2.5 inches

recall that the formulae for calculating the surface area of a cylinder = 2πrh + 2πr2

surface area of a cylinder = 2πrh + 2πr²

surface area of a cylinder = 2 x 3.14 x 2.5 x 9.5 + 2 x 3.14 x (2.5)²

surface area of a cylinder = 6.28 x 2.5 x 9.5 + 6.28 x 6.25

surface area of a cylinder = 149.15 inches² + 39.25inches²

surface area of a cylinder =  188.4 inches²

Answer:

the answer is 195 m3

because you do 1/2 x 5 x 6 x 13= 195 m3

Answer:

5 units

Step-by-step explanation:

Represent the length and width by L and W.  Then W = L - 4.

The area of the rectangle is 45 square units = L(L - 4), or

L^2 - 4L - 45 = 0

This factors easily into

(L - 9)(L + 5) = 0, so L must be 9.  We ignore the negative value -5.

The width of the rectangle is W = L - 4, or 5 units.

The width of the rectangle is 5 units, obtained by first determining the length using the given area and the relationship between the length and width, and then subtracting 4 from the length.

This is a problem related to the area of a rectangle. The area of a rectangle is calculated by multiplying its length and width.

Let's call the length of the rectangle L (in units). Since we know that the width is 4 units less than the length, we can denote the width as L - 4.

The area of the rectangle is given as 45 square units. Hence, we have the equation L*(L - 4) = 45.

Solving this equation, we get the length (L) as 9 units. Consequently, the width (L - 4) will be 9 - 4, which equals 5 units.

Therefore, the width of the rectangle is 5 units.

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Answer:

A

Step-by-step explanation:

Using Pythagoras' identity on the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

t² + 12² = 13²

t² + 144 = 169 ( subtract 144 from both sides )

t² = 25 ( take the square root of both sides )

t = [tex]\sqrt{25}[/tex] = 5 → A

Answer: its B or A

Step-by-step explanation:

Answer:

A) 40

Step-by-step explanation:

Because angle 1 is 140 on a 180 line so 2 is 40 and 2 is congruent to 6

Answer:

x=2  x=3

Step-by-step explanation:

log4 (x^2 + 6) = log4 5x

Since the bases are the same, we can set

x^2 +6 = 5x

Subtract 5x from each side

x^2 -5x +6 = 5x-5x

x^2 -5x +6 =0

Factor

(x-3) (x-2) =0

Using the zero product property

x-3=0    x-2=0

x=3   x=2

Theoretical probabilities are based on mathematical predictions, while experimental probabilities are based on actual outcomes. For a coin toss, the theoretical probabilities are 25% for two heads, 25% for two tails, and 50% for one head and one tail. Experimental probabilities might be different, depending on the outcomes of the tosses, but over time they should approximate the theoretical probabilities.

The theoretical probability of a coin toss resulting in two heads showing or two tails showing is both 0.25 (or 25%). This because there are four equiprobable outcomes (HH, TT, HT, TH) and only one of these corresponds to the event of getting two heads or two tails. The theoretical probability of getting one head and one tail is 0.5 (or 50%) as it can happen in two different ways (HT, TH).

On the other hand, the experimental probability might be different due to randomness. Experimental probability is calculated by doing the experiment (e.g., flipping the coin), tracking the outcomes, and comparing the frequency of each outcome to the total number of trials. Depending on the outcome of the experiment, the experimental probability of getting two heads, two tails, or one of each could be different from the theoretical probabilities.

The difference between theoretical and experimental probabilities can be attributed to random chance. The more trials you run, the closer your experimental probability should come to the theoretical probability.

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