Select the possible values for x in the equation x2 = 108.

A.
[tex] \sqrt[ 36]{3} [/tex]
B.
[tex] \sqrt{18} [/tex]

c. 54

D.
[tex] \sqrt[6]{3} [/tex]
​

Answer:

[tex]t=\frac{37300-38000}{\frac{1000}{\sqrt{18}}}=-2.970[/tex]  

[tex]p_v =P(t_{17}<-2.97)=0.0043[/tex]  

If we compare the p value and the significance level given [tex]\alpha=0.05[/tex] we see that [tex]p_v<\alpha[/tex] so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the true mean is lower than 38000 at 5% of signficance.  

Step-by-step explanation:

We assume this question: A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 38,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 37,300 miles with a standard deviation of 1000 miles. At α= 0.05, does the test suggest that mean life is less than 38000 miles?  because if is not this one is not appropiate

Data given and notation  

[tex]\bar X=37300[/tex] represent the sample mean    

[tex]s=100[/tex] represent the sample standard deviation for the sample  

[tex]n=18[/tex] sample size  

[tex]\mu_o =7500[/tex] represent the value that we want to test  

[tex]\alpha=0.05[/tex] represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

[tex]p_v[/tex] represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is lower than 38000, the system of hypothesis would be:  

Null hypothesis:[tex]\mu \geq 38000[/tex]  

Alternative hypothesis:[tex]\mu < 38000[/tex]  

Since we don't know the population deviation, is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

[tex]t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}[/tex] (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

[tex]t=\frac{37300-38000}{\frac{1000}{\sqrt{18}}}=-2.970[/tex]  

P-value  

The degrees of freedom are given by:

[tex] df = n-1= 18-1=17[/tex]

Since is a left tailed test the p value would be:  

[tex]p_v =P(t_{17}<-2.97)=0.0043[/tex]  

Conclusion  

If we compare the p value and the significance level given [tex]\alpha=0.05[/tex] we see that [tex]p_v<\alpha[/tex] so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the true mean is lower than 38000 at 5% of signficance.  

The shipping firm's hypothesis test determines that the mean lifespan of a particular brand of tires is indeed less than 38,000 miles based on their sample data and the significance level.

The shipping firm is performing a hypothesis test about a population mean, where the suspected value is 38,000 miles. The null hypothesis (H0) would be that the mean life of the tires is equal to 38,000 miles, while the alternative hypothesis (H1) is that the mean life is less than 38,000 miles.

Using the provided sample data, we can calculate the test statistic (z-score), which helps us determine the p-value. The test statistic is given by (Sample Mean - Pop Mean) / (Standard Deviation / sqrt(n)) = (37300 - 38000) / (1000 / sqrt(18)). This gives us a test statistic of -3.1623.

We also know that our α is 0.05 for this problem. Now we find the p-value that is associated with this test statistic. If the p-value is less than our alpha, we reject the null hypothesis. Given our test statistic, we will indeed find a very low p-value, less than 0.05, which means we reject the null hypothesis and conclude the mean lifespan of the tires is less than 38,000 miles.

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Answer: 9/6 metre

Step-by-step explanation:

From the question, Olivia is cutting a 1 1/2m by 3/4m piece of rectangular paper into two pieces along its diagonal

This will result into two congruent triangular pieces.  

Let us first find the area of each piece by finding the area of the original rectangle and dividing it by two.

The area of a rectangle is given by multiplying the length and the width:

1 1/2 × 3/4

We can change the first fraction to an improper fraction:

(1×2)+1 = 2+1 = 3; this gives us 3/2:

3/2 × 3/4 = 9/8 = 1 1/8

The area of the entire rectangle is 1 1/8 sq. m., or 1.125 sq. m.

Divide this by 2:

9/8 ÷ 2

9/8 × 1/2 = 9/16

The area of each rectangle is 9/16 sq. m., or 0.5625 sq.

Answer:

9/16

Step-by-step explanation:

Answer:

The wallpaper would cost 1105 $

Given:

Given that the triangle.

Let the length of the side a be 10 cm.

Let the length of the side b be 13 cm.

Let the measure of ∠C is 105°

We need to determine the area of the triangle.

Area of the triangle:

The area of the triangle can be determined using the formula,

[tex]A=\frac{1}{2} a b \ sin \ c[/tex]

Substituting a = 10, b = 13 and ∠C = 105°, we get;

[tex]A=\frac{1}{2}(10)(13) \ sin \ 105[/tex]

Simplifying, we get;

[tex]A=\frac{1}{2}(10)(13)(0.966)[/tex]

[tex]A=\frac{1}{2}(125.58)[/tex]

[tex]A=62.79 \ cm^2[/tex]

Rounding off to 1 decimal place, we have;

[tex]A=62.8 \ cm^2[/tex]

Thus, the area of the triangle is 62.8 cm²

The area of the triangle is 65 square centimeters when rounded to one decimal place.

To find the area of a triangle, you can use the formula:

[tex]Area = (\frac{1}{2} ) \times base \times height[/tex]

In this case, you have a base of 13 cm and a height of 10 cm. Plug these values into the formula:

[tex]Area =(\frac{1}{2} ) \times 13 cm \times 10 cm[/tex]

[tex]Area = (\frac{1}{2}) \times 130 cm^2[/tex]

Now, calculate the area:

[tex]Area = 65 cm^2[/tex]

So, the area of the triangle is 65 square centimeters when rounded to one decimal place.

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The possible y-intercepts for the given continuous function from the table are (0,1) and (0,5).

In this mathematical problem, the student is asking about the y-intercept of a function represented in a table. The y-intercept of a continuous function is a point where the line of the function intersects or touches the y-axis on a graph. This point is always (0, y). If we look at the given points, only (0,1) and (0,5) can potentially be y-intercepts because they have 0 as their x-coordinate, which is the requirement for a point to be a y-intercept.

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Answer:

The answer to your question is the letter B.

Step-by-step explanation:

Data

        √3/2     -2π     4/5    -6.5    7 2/3

Process

1.- Get the decimal values of each data

√3/ 2= 0.87      -2π = -6.28    4/5 = 0.2    -6.5 = -6.5     7 2/3  = 7.67

2.- Order the numbers from greatest to least

            7.67 >  0.87  >  0.2  > -6.28  >  -6.5

or          7 2/3  >  √3/2  >  4/5  >  -2π  >  -6.5

3.- Conclusion

The right answer is B.

Answer:

2.71828

Step-by-step explanation:

In this question, we are asked to give the approximate value of the irrational number e.

We should understand that just like Pi, which is the ratio of the circumference of a circle to the diameter, we have the number called e. It is also a consistent like Pi and has an approximate value of 2.71828.

What does it mean when it is called irrational? it is an irrational number because it doesn’t have an exact fraction which is the ratio of two numbers and thus it has a non-ending list of numbers after the decimal point.

Final answer:

The irrational number e, also known as Euler's number, is approximately 2.71828 when rounded to five decimal places. It is crucial in mathematics, particularly calculus.

Explanation:

The question asks for the approximate value of the irrational number e rounded to five decimal places. The number e is a fundamental constant in mathematics, often referred to as Euler's number, which is approximately equal to 2.71828 when rounded to five decimal places.

This number plays a crucial role in various branches of mathematics, especially in calculus, relating to the rate of growth or decay in natural phenomena.

Answer:

45.8 inches

Step-by-step explanation:

Considering the given dimensions and taking 40 inches for length, 20 inches for height and 10 inches for width. The diagonal that runs from bottom to top of box will give the longest possible length of a pole.

Diagonal at the bottom of box

Diagonal=√(l²+w²)

Where l and w represent length and width respectively

Diagonal=√(40²+10²)=√1700

Diagonal between the height and bottom diagonal

Longest diagonal=√(20²+√1700)=√2100=45.8257569495584

Rounded off, the diagonal is approximately 45.8 inches

The longest length of a support pole that will fit into the box measures approximately 45.8 inches.

To find the longest length of a support pole that will fit into the box, we need to determine the length of the diagonal of the box. The diagonal length can be found using the formula:

diagonal = √(length^2 + width^2 + height^2)

Substituting the given values:

diagonal = √(10^2 + 20^2 + 40^2) = √(100 + 400 + 1600) = √2100 ≈ 45.82 inches.

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Answer:

  5

Step-by-step explanation:

There are 3 feet in a yard, so 420 feet is 420/3 = 140 yards.

The total number of yards Edith needs is ...

  65 yd + 580 yd = 645 yd

So, the total number of balls of yarn Edith needs is ...

  (645 yd)/(140 yd/ball) ≈ 4.61 balls

Edith needs to buy 5 balls of yarn to make her projects.

Answer:

x=2.25

Step-by-step explanation:

Let's break this down:

Saying "y=", is just like saying "0=", so we can say that;

0=4x-9

We need to isolate the variable, and to do that we should add 9 to both sides and cancel it out.

9=4x

Now we need to eliminate the coefficient by dividing both sides by four

[tex]9/4=4x/4[/tex]

Which cancels out four, giving us

2.25=x

Hope this helps and please correct me if I am wrong:)

<3

Answer:

The image attach is  the truth table for the compound statement

Step-by-step explanation:

Answer:

6.4%

Step-by-step explanation:

Answer:

6.4%

Step-by-step explanation:

Given:

Given that the radius of the cone is 2 inches.

The height of the cone is 4 inches.

We need to determine the volume of the cone.

Volume of the cone:

The volume of the cone can be determined using the formula,

[tex]V=\frac{1}{3} \pi r^2 h[/tex]

where r is the radius of the cone and h is the height of the cone.

Substituting r = 2 and h = 4 in the above formula, we get;

[tex]V=\frac{1}{3} (3.14) (2)^2 (4)[/tex]

[tex]V=\frac{1}{3} (3.14) (4) (4)[/tex]

[tex]V=\frac{1}{3}(50.24)[/tex]

[tex]V=16.75[/tex]

Thus, the volume of the cone is 16.75 cubic inches.

Final answer:

Susie was 20 meters behind Andy when he reached the finish line in the 100-meter race.

Explanation:

To determine how many meters Susie was behind Andy at the moment Andy reached the finish line during the 100-meter race, let's consider the information given:

Andy finished the race.

Blaise was 10 meters behind Andy at that moment.

Susie was 10 meters behind Blaise when Blaise finished the race.

When Blaise reached the finish line, Andy would have already finished since Blaise was behind by 10 meters. However, at the moment Andy finished, Susie was also behind Blaise, who was 10 meters from finishing. Hence, Susie was 10 meters (the distance Blaise was behind Andy) + 10 meters (the distance Susie was behind Blaise at her finish) = 20 meters behind Andy when he finished the race.

In conclusion, Susie was 20 meters behind Andy when Andy reached the finish line.

Answer:

g(5) = 120

Step-by-step explanation:

g(x) = x^3 - 5;

Let x=5

g(5) = 5^3 -5

       = 125 -5

       = 120

Answer:

g(5) = 120

Step-by-step explanation:

We want to find g(x) when x is equal to 5, so we can substitute 5 in for x.

g(x) = x^3 - 5

g(5) = 5^3 - 5

Solve the exponent

g(5) = 125-5

Subtract

g(5) = 120

16% of 250 is .16 * 250, which is 40

250% of 16 is 2.5 * 15, which is also 40

So, it's true.

A percentage is a way to describe a part of a whole. The statement that 16% of 250 is equal to 250% of 16 is true.

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

The value of 16% of 250 can be written as,

[tex]16\%\ of\ 250\\\\=\dfrac{16}{100} \times 250\\\\=40[/tex]

The value of 250% of 16 can be written as,

[tex]250\%\ of\ 16\\\\=\dfrac{250}{100} \times 16\\\\=40[/tex]

Thus, the statement that 16% of 250 is equal to 250% of 16 is true.

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Using the formula for slope, we calculated that the slope of the line passing through the points (8,10) and (-7,14) is -4/15.

The slope of a line between two points ((x1,y1) and (x2,y2)) can be calculated using the formula for slope: m = (y2 - y1) / (x2 - x1).

In this case, your two points are (8,10) and (-7,14).

Therefore, we can calculate the slope using these points:

m = (14 - 10) / (-7 - 8) = 4/-15 = -4/15.

So, the slope of the line passing through the given points is -4/15.

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Answer:

260 text

Step-by-step explanation:

First you're gonna want to subtract 17.50 form 56.50 and get 39.00 left over for text messages.

dividing 39 by .15 ([tex]\frac{39}{0.15}[/tex]) gives you 260

he can send 260 text per billing period

Answer:

She can sen a MAXIMUM of 260 texts

Step-by-step explanation

so lets start with the info we know

Her limit - $56.50

a flat rate (constant) - $17.50

and how much is cost PER text - $0.15

so we can make an inequality

56.50 ≤ .15x + 17.50

first, we would take away the constant

56.50-17.50 = 39

39 ≤ .15x

divide by .15

39/.15

leaving us with

260≤ X

Answer:

f(13) = 44

Step-by-step explanation:

f(13) = 3 (13) +5 = 39 + 5= 44

Answer:

They'll build 66 cars in those conditions.

Step-by-step explanation:

In this case we can use a compounded rule of three to solve the problem. We need to set it up as shown bellow:

160 workers -> 32 cars -> 2 hours

220 workers -> x cars -> 3 hours

If the number of workers rise, then we expect the number of cars to rise aswel, so they're directly proportional. If the number of hours worked increase we can expect the number of cars to increase aswell, so they're directly proportional. We can now set the fractions:

(160*2)/(220*3) = 32/x

320/660 = 32/x

x = (32*660/320) = 66 cars

They'll build 66 cars in those conditions.

Final answer:

To find the number of cars that 220 workers can produce in 3 hours, we can use the joint variation equation and the given information. By solving for the constant of variation, we can substitute the new values to find the answer.

Explanation:

To solve this problem, we can set up a joint variation equation:

cars = k * workers * time

Given that 160 workers can produce 32 cars in 2 hours, we can substitute these values into the equation:

32 = k * 160 * 2

Solving for k, we find that k = 0.1.

Now, we can use this value of k to find the number of cars that 220 workers can produce in 3 hours:

cars = 0.1 * 220 * 3

cars = 66

Therefore, 220 workers can produce 66 cars in 3 hours.

Answer:

H0:p=0.41

Step-by-step explanation:

The null hypothesis always contain equality i.e. (=) sign. The null hypothesis contains the statement regarding population parameter. Here, the claim about population proportion is mentioned in the statement that 10 p.m. newscast of local CBS reaches 41% of viewers. So, the null hypothesis would be

Null hypothesis:H0: p=0.41.

Explanation:

A cross section of a prism will match the base of the prism when the plane of the section is parallel to the base.

If the polyhedron is not a prism, or the lateral faces are not perpendicular to the base, or the plane of cross section is not parallel to the base, you can get a variety of cross-section shapes.

For example, the cross sections of a cube include ...

  triangle, square, rectangle, trapezoid, general quadrilateral, pentagon, hexagon

Answer: A cross section of a prism will match the base of the prism when the plane of the section is parallel to the base.

If the polyhedron is not a prism, or the lateral faces are not perpendicular to the base, or the plane of cross section is not parallel to the base, you can get a variety of cross-section shapes.

Step-by-step explanation.

Answer:

The maximum number of quarters that he could have is 13

Step-by-step explanation:

Let x represent the number of quarters he could have. If he has 10 dimes and has at least 20 coins, then

→ x + 10 >= 20

→ x >= 10    (1)

His coins worth at most $4.25. Also, it is known that 1 dollar is equal to 100 cents, 1 dime is equal to 10 cents and 1 quarter is equal to 25 cents.

→ (x * 25) + (10 * 10)  <= (4.25 * 100)

→ 25x  + 100 <= 425

→ 25x <= 325

→ x <= 13  (2)

If we combine the equation 1 and 2:

10 <= x <= 13

The maximum value of x is 13

The quadratic function is f(x) = 5(x - 3)² + 2.

A function has an input and an output.

A function can be one-to-one or onto-one.

It simply indicated the relationships between the input and the output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

The vertex form of a quadratic function is:

f(x) = a(x - h)² + k

where (h, k) is the vertex of the parabola.

We are given that the vertex is (3, 2), so we have:

h = 3

k = 2

We also know that the parabola passes through the point (4, 7).

We can use this point to find the value of a:

7 = a(4 - 3)² + 2

5 = a

Therefore, the quadratic function is:

f(x) = 5(x - 3)² + 2

This quadratic function has a vertex of (3, 2) and passes through the point (4, 7).

Thus,

The quadratic function is f(x) = 5(x - 3)² + 2.

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Answer:    the answer is 1.00

Step-by-step explanation:   4/4 as a decimal is 1.00 because if you have four parts out of 4 then  it makes a whole so it is 1.00

a

The solution is 1.00

The value of the equation is A = 1.00

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the number be represented as n

The value of n = ( 4/4 )

A = ( 4/4 )   be equation (1)

On simplifying the equation , we get

The value of A = 1

The value of A in decimal form is A = 1.00

Therefore , the value of A is 1.00

Hence , the value of the equation is A = 1.00

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Answer:

  $14.10

Step-by-step explanation:

To have 30 bulbs, Maura can buy 10 packages of 3 at $5.37 each, for a total of $53.70. Or, she can buy 15 packages of 2 at $4.52 each, for a total of $67.80.

Buying in packages of 3, Maura saves $67.80 -53.70 = $14.10.

Answer: The correct answer will be $1,220 in the account after four years.

Step-by-step explanation: For this problem we will use the "Simple Interest" equation to find the amount of interest you will earn after 4 years.

First, convert 5.5% to a decimal, 0.055.

I, interest = 1000 x 0.055 x 4

I = $220

Now add the interest to the total amount of money originally in the account.

1000 + 220 = $1,220

Final answer:

The amount in the account after four years, with continuous compound interest at a rate of 5.5%, is approximately $1246. Therefore, after four years, the amount in the account will be closest to option (b) $1,246.

Explanation:

To calculate the amount in the account after four years, we can use the formula for continuous compound interest: A = P  [tex]e^{(rt)}[/tex], where A is the final amount, P is the initial principal, e is the mathematical constant approximately equal to 2.71828, r is the interest rate, and t is the time in years.

In this case, P = $1000, r = 5.5% = 0.055, and t = 4. Plugging these values into the formula, we have:

A = $1000 × [tex]e^{(0.055 \times 4)}[/tex]

A = $1000 × [tex]e^{0.22[/tex]

A ≈ $1000 × 1.246

Therefore, the amount in the account after four years is approximately $1246.

Answer:

rearrange them properly to get

x-y=7

-3x+y=12

( by elimination method)

x-y = 7

-3x+y=

(x+ –3x) + (–y+y) = (7+12)

-2x+0= 19

x= -9.5

from eqn(i)

x-y=7

-9.5 - y=7

-y=16.5

y= -16.5

Answer:

4. x = 2 + 2sqrt(10/3), 2- 2sqrt(10/3)

5. No real solutions

x = 1 + 3sqrt(2) i, 1 - 3sqrt(2) i,

6. x = 1 + sqrt(2), 1 - sqrt(2)

Step-by-step explanation:

4. 3(x - 2)² = 40

(x - 2)² = 40/3

(x - 2) = +/- sqrt(40/3)

x - 2 = +/- 2sqrt(10/3)

x = 2 +/- 2sqrt(10/3)

5. -2(x - 1)² = 36

(x - 1)² = -18

A perfect square can never be negative for real values of x

(x - 1) = +/- i × sqrt(18)

x - 1 = +/- i × 3sqrt(2)

x = 1 +/- i × 3sqrt(2)

6. 4(x - 1)² = 8

(x - 1)² = 2

x - 1 = +/- sqrt(2)

x = 1 +/- sqrt(2)