Please answer, I'm doing a test and it is almost done!!!

What is the value of the expression, written in standard form?

Answer:55

Step-by-step explanation:

Answer:

undefined

Step-by-step explanation:

The x coordinate of the two points are the same, while the y values are different. This means that the line is vertical. A vertical line does not have a defined slope, because the change in y divided by the change in x is dividing by zero. Therefore, the answer is "undefined"

Answer:

The slope of the line is undefined.

Step-by-step explanation:

Using the point slope formula, in the end, you will get -7 over 0. Since a zero is in the bottom, the slope is considered undefined.

Answer:

-8, 16, -32, 64

Step-by-step explanation:

a1 = -8

r = -2

a2 = -8(-2)=16

a3 = -8(-2)²=-8(4)=-32

a4=-8(-2)³=-8(-8)=64

The probability that the sample mean cost for these 38 schools is at least $25248 is 0.998215. Option b is correct.

Given that the mean undergraduate cost for tuition, fees, room and board for four year institutions was $26737, the standard deviation is $3150 and 38 four-year institutions are randomly selected. We have to find the probability that the sample mean cost for these 38 schools is at least $25248.

We can use the central limit theorem to solve the given problem. According to this theorem, the sample means are normally distributed with a mean of the population and a standard deviation equal to population standard deviation/ √ sample size.

So, the z-score corresponding to the given sample mean can be calculated as follows:

z = (x - μ) / σ√n

= ($25248 - $26737) / $3150/√38

= -1489 / 510 = -2.918.

On a standard normal distribution curve, the z-score of -2.918 has a probability of 0.001785 (approximately) of occurring.

Hence, the correct option is B. 0.998215.

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Answer:

x = 19

x + 9 = 28

7x = 133

Step-by-step explanation:

The square root of 45 ≈ 6.7082

The square root of 92 ≈ 9.5917

The square root of 126 ≈ 11.2249

The square root of 45 is approximately 6.7082, which is derived from taking the square root of 45 \((\sqrt(45)).\)

For 92, the square root is approximately 9.5917 \((\sqrt(92))\).

As for 126, its square root is around 11.2249 \((\sqrt(126)).\)

These values are approximations because the square roots of 45, 92, and 126 are irrational numbers, meaning their decimal representation is non-repeating and non-terminating.

When working with these square roots in calculations, it is common to either use their approximate values or to keep them in square root form to maintain the highest level of precision.

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The Question in English

What is the square root of 45

what is the square root of 92

what is the square root of 126

Answer:

25+3(a−5)+7a.

25+3a-15+7a

7a+3a+25-15

10a+10

10(a+1)

Add the 3 ratios together: 1 + 3 + 2 = 6

Divide perimeter by total:

30/6 = 5

Multiply each ratio by 5:

1 x 5 = 5

3 x 5 = 15

2 x 5 = 10

The greatest side is 15 cm

i think the answer might be 2948m^3

Answer:

x and y can be any two numbers greater than zero such that y is also greater than x

D.no more than 45

C.50 miles per hour

Step-by-step explanation:

Let the two numbers be such that x< y because we have been given y/x>1 and x/y< 1 .

Suppose we take y= 9 and x= 3 then

9/3 > 1

3>1

Also

3/9 < 1

1/3 < 1

x and y can be any two numbers greater than zero such that y is also greater than x

2. Total weight that can be carried is 3000 pounds.

The big machine is 300 pounds. The weight that the truck can carry beside the big machine is 3000-300= 2700 pounds.

The smaller machines weigh 60 pounds

The number of smaller machines that can be carried is 2700 ÷ 60= 45 other than the big machine.

3. Total distance = Speed * time

                           = 48 * (40/60) = 32 miles

New distance = 32+ 8= 40 miles

New time = 48 minutes

Speed = distance / time = 40/ 48/60=  50 miles per hour

So, on solving the provided question, we can say that percentage  = 1/15 X 100 = 15%

A percentage in mathematics is a figure or ratio that is stated as a fraction of 100. The abbreviations "pct.," "pct," and "pc" are also occasionally used. It is frequently denoted using the percent symbol "%," though. The amount of percentages has no dimensions. With a denominator of 100, percentages are basically fractions. To show that a number is a percentage, place a percent symbol (%) next to it. For instance, if you correctly answer 75 out of 100 questions on a test (75/100), you receive a 75%. To compute percentages, divide the amount by the total and multiply the result by 100. The percentage is calculated using the formula (value/total) x 100%.

car gas mileage is normally distributed with a mean of = 25 miles per gallon

67% of cars get at least 23 miles per gallon

percentage of cars get less than 30 miles per gallon

25-23/30

2/30

1/15

percentage  = 1/15 X 100 = 15%

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Answer:

Step-by-step explanation:

order of PEMDAS

simplify multiplication:

\( \displaystyle \: \sqrt{ {65}^{2} } \)

use \(\sqrt{x^m}=x^{\frac{1}{2}\times m}\) to simplify:

\( \displaystyle \: = {65}^{2 \times \frac{1}{2} } \\ = {65}^{ \cancel{ \: 2 }\times \frac{1}{ \cancel{ \: 2}} } \\ = {65}^{1} \)

as we know x¹=x

therefore our final answer is

Answer:

\(65\)

\( \sqrt{65 \times 65} \\ = 65\)

Answer: B

Step-by-step explanation:

1.12% is equal to 0.0112. Adding this to 1, we get the base is equal to 1.0112.

Thus, \(p(x)=21.7(1.0112)^x\).

Answer:

Answer For this following question Is B.) p(x) = 21.7(1.0112)x

mark me brainliest ty

Answer:

1/3

Step-by-step explanation:

The general term for the recurrence T(n) = 3T(n/2) + O(n) is O(nlog3). To get the answer, we should plug in k = log3. For the second recurrence, we cannot use the master theorem since it does not cover this case.

To solve this recurrence, we have to use the substitution method, where we guess a solution of the form T(n) = an^k and then prove that this is indeed a solution. This can be done by substituting the guessed solution back in to the recurrence. If the substitution works, then we have solved the recurrence. If not, we can try different values for a and k until the substitution works.

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• Answer:

x = 2

• Step-by-step explanation:

AB = AC/2 = 16/2 = 8

AB = 2x + 4

8 = 2x + 4

2x = 8 - 4

2x = 4

x = 4 : 2

x = 2

Answer:

Natural numbers are all numbers 1, 2, 3, 4… They are the numbers you usually count and they will continue on into infinity. Whole numbers are all natural numbers including 0 e.g. 0, 1, 2, 3, 4… Integers include all whole numbers and their negative counterpart e.g. …

Answer: the first term in the sequence is 9.

Step-by-step explanation:

Let the primary term be x.

At that point the moment term is 2x + 4.

And the third term is 2(2x + 4) + 4 = 4x + 12.

Since the third term is given as 48, we will set up an condition and unravel for x:

4x + 12 = 48

4x = 36

x = 9

Base fee to drive a truck = $18.95

Money payed by Saeed at the end of his drive = $130.49

Money he had to pay for the distance he drove :-

\( = 130.49 - 18.95\)

\( = $111.54\)

Money payed by Saeed for the distance he drove = $111.54

Money charged for an hour's drive = 78 cents

78 cents = $0.78

Distance Saeed drove :-

\( = \frac{111.54}{0.78} \)

\( \color{orange}= 143 \: km\)

Therefore , Saeed drove the truck for 143 km .

On solving the provided question, we cans ay that - \(3/12 = 1/4\) is the fraction .

Any number of equal portions, or parts of a whole, are described by fractions. Fractions in standard English indicate the number of pieces of a specific size. 8, 3/4. A whole includes fractions. The ratio of the numerator to the denominator is how numbers are expressed in mathematics. Each of these is an integer in simple fractions. In the numerator or denominator of a complex fraction is a fraction. True fractions have numerators that are less than their denominators.

balloons = 12

blew up = 1/3

friend blew up = 5

\(1/3 * 12 = 12/3 = 4\)

\(4 + 5 = 9\) =  balloons blown up.

\(12 - 9 = 3\)   balloons that need to be blown up.

\(3/12 = 1/4\) is the fraction

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The pair of numbers that would be in the columns, considering the proportional relationship, is given as follows:

20 would be in the column for 2, and 60 would be in the column for 6.

A proportional relationship is a special linear function, with intercept having a value of zero, in which the output variable is obtained with the multiplication of the input variable and the constant of proportionality k, as shown as follows:

y = kx

The table is extended to represent more equivalent ratios for 2:6, hence the constant of the relationship is given as follows:

k = 6/2 = 3.

Hence the equation is:

y = 3x.

The values given by each column are given as follows:

When x = 20, the numeric value of the relationship is of:

y = 3 x 20 = 60.

Hence the first option is correct.

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The probability of picking a red balloon at random is,

⇒ P = 0.18

We have to given that,

Total number of balloons = 17

And, Number of red balloons = 3

Now, We get;

The probability of picking a red balloon at random is,

⇒ P = Number of Red balloons / Total number of balloons

Substitute given values, we get;

⇒ P = 3 / 17

⇒ P = 0.1786

⇒ P = 0.18

(After rounding to the nearest hundredth.)

Thus, The probability of picking a red balloon at random is,

⇒ P = 0.18

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Answer:

ok

Step-by-step explanation:

ok

Answer:

The scale factor is 60

Step-by-step explanation:

The drawing is measured in inches and the billboard is measured in feet.  First, convert 15 feet to 180 inches.  Then use the ratio \(\frac{180}{3}\) to find that the scale factor is 60.  This means the length of the billboard will be 600 inches or 50 feet.

To calculate the hydrostatic force on the dam, we need to determine the pressure exerted by the water and then multiply it by the area of the dam.

First, let's calculate the pressure exerted by the water at a depth of 1 m from the top of the dam. The pressure at a given depth in a fluid is given by the formula: P = ρgh. where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth. Given: Density of water (ρ) = 1000 kg/m³. Acceleration due to gravity (g) = 9.8 m/s². Depth (h) = 1 m. Using these values, we can calculate the pressure:

P = 1000 * 9.8 * 1 = 9800 Pa. Next, let's calculate the area of the dam. Since the dam is in the shape of a trapezoid, we can use the formula for the area of a trapezoid: A = (a + b) * h / 2, where A is the area, a and b are the lengths of the parallel sides, and h is the height. Given: Top width (a) = 98 m, Bottom width (b) = 42 m, Height (h) = 10 m. Using these values, we can calculate the area: A = (98 + 42) * 10 / 2 = 700 m². Now, we can calculate the hydrostatic force on the dam by multiplying the pressure by the area:  Force = Pressure * Area = 9800 * 700 = 6,860,000 N.

Therefore, the hydrostatic force on the dam, when the water level is 1 m from the top, is approximately 6,860,000 Newtons.

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Answer:

Both are true.

Step-by-step explanation:

If f(x) = 2x³ + 6

To find the inverse of the given function,

Rewrite the function in the form of an equation,

y = 2x³ + 6

Interchange the variables x and y,

x = 2y³ + 6

Solve for y,

2y³ = x - 6

y = \(\sqrt[3]{\frac{(x-6)}{2}}\)

Rewrite the equation in the form of a function,

\(f^{-1}(x)={\sqrt[3]{\frac{(x-6)}{2}}\)

\((fof^{-1})(x)=f[f^{-1}(x)]\)

                  = \(2(\sqrt[3]{\frac{(x-6)}{2}})^3+6\)

                  = (x - 6) + 6

                  = x

\((f^{-1}of)(x)=f^{-1}[{f(x)]\)

                  \(={\sqrt[3]{\frac{(2x^3+6-6)}{2}}\)

                  \(={\sqrt[3]{\frac{(2x^3)}{2}}\)

                  = x

Therefore, both the statements are true.

Answer:

120 miles

Step-by-step explanation:

Use the units to determine how to find the distance (in miles).

If 20 miles/hour were multiplies by the hours, the hours would cancle, leaving just miles:

(20 miles/hour)*(6 hours) = 120 miles