The answer is in the picture. I need help ASAP!!

Answer:

2.548 pascal

Step-by-step explanation:

force=mass×acceleration due to gravity

force=39×9.8

pressure(p)=force/area

p=382.2/150

p=2.548 pa

Answer:

1 and 2 is a function.But the third one isn't.

explanation:

When there is more than one point on a vertical line that is not a function.Like in the third picture points (2,1) and (2,-1) are on the same vertical line.

P.S: it is a function if there is more than one point on a horizontal line.

Why you may ask:

x are the domain, y are the codomain. X can have multiple Y but Y can't have more than one X. To embody: think Xs as mothers and Ys as childrens , a mother can have more than one children but every children can have only one biological mother.

Answer:

Step-by-step explanation:

\(3\left(x+1\right)=5\left(x-2\right)+7\\Expand\\3x+3 =5x -10+7\\Collect \:like\: terms\\3x-5x = -10+7-3\\-2x = -6\\Divide \:both\:sides\:of\:the\:equation\:by\:-2\\\frac{-2x}{-2} = \frac{-6}{-2}\\ \\x = 3\)

Answer:

 x = 3

Step-by-step explanation:

3(x+1)=5(x−2)+7

Use the distributive property to multiply 3 by x+1.

3x+3=5(x−2)+7

Use the distributive property to multiply 5 by x−2.

3x+3=5x−10+7

Add −10 and 7 to get −3.

3x+3=5x−3

Subtract 5x from both sides.

3x+3−5x=−3

Combine 3x and −5x to get −2x

−2x+3=−3

Subtract 3 from both sides.

−2x=−3−3

Subtract 3 from −3 to get −6.

−2x=−6

Divide both sides by −2.

x = -6/2

Divide −6 by −2

x = 3

Answer:

9:5

Step-by-step explanation:

I think it's 9:5 sorry if I'm wrong.

Answer:

15%

Step-by-step explanation:

100% - 85% = 15%

Step-by-step explanation:

v = u + at

v-u = at

a = (v -u)/t

When t = 4, u=10, v=50

a = (50-10)/4

a= 40/4

a = 10

Answer: its 1 over 0 which equals B^-1

Answer:

B

Step-by-step explanation:

Option B is the right answer when a struggling student who is presently failing pre-statistics (60%) wants to forecast his mark in the introductory statistics course.

Given that,

Let's say a struggling student who is presently failing pre-statistics (60%) wants to forecast his mark in the introductory statistics course. Should this prediction be made using the regression line.

In the picture we can see the Option A,B and C.

As we can see that there is a positive linear trend between these two variables, it can be used to predict grades for a student even if he didn't pass the exam.

Option B seems correct here.

Therefore, Option B is the right answer when a struggling student who is presently failing pre-statistics (60%) wants to forecast his mark in the introductory statistics course.

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Answer:

1,500

Step-by-step explanation:

First find the answer to this.

3 percent of 5000 = 150 per year

Then multiply 150 by 10.

1,500.

Hope this helps! :D

Answer: 160

Step-by-step explanation:

first workout the multiplication sums [22 x 28 = 616]

[18 x 28 = 505] then add 2 numbers together [616 + 505 = 1120]

then divide the answer by 2 [1160 / 2 = 160

Answer:

It's 0.72 then buy used

Step-by-step explanation:

Answer:

c) 0.72

next one

B) buy used

Step-by-step explanation:

edge 2023

The likelihood of finding that the sample mean is between 59,050 and 60,950 miles can be determined by calculating the probability using the normal distribution with a sample size of 90, a population mean of 60,000 miles, and a population standard deviation of 4,000 miles.

To find out the probability of getting a sample mean between 59,050 and 60,950, a simulator is used to determine the tread life of tires mounted on light-duty trucks that follows a normal probability distribution.

Here, the population mean is 60,000 miles and the standard deviation is 4,000 miles. The given sample size is 90.

We can use the formula for standardizing the score. The standardized score for the lower limit of 59,050 is -2.78, and that of the upper limit of 60,950 is 2.78. Now, we need to find the probability of getting the mean value between -2.78 and 2.78.

We can use the standard normal distribution table to find the value, which is 0.9950 for z = 2.78 and 0.0050 for z = -2.78. Hence, the required probability is 0.9900.

Therefore, the likelihood of finding that the sample mean is between 59,050 and 60,950, for a sample size of 90 tires, is 0.9900.

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The margin of error can be calculated using the formula:
Margin of error = (upper limit of the confidence interval - lower limit of the confidence interval) / 2

In this case, a margin of error of 9.55 suggests that the sample mean is quite precise, since it's relatively close to the true population mean (which we know to be 52.90).

In this case, the lower limit of the confidence interval is 43.85 and the upper limit is 61.95.
Margin of error = (61.95 - 43.85) / 2
Margin of error = 9.55
Therefore, the margin of error is 9.55. This means that if the sample size were to be repeated, we would expect the sample mean to be within 9.55 units of the true population mean 95% of the time.
It's worth noting that the confidence interval provides a range of values within which we can be reasonably certain that the true population mean lies. The margin of error, on the other hand, gives us an indication of the precision of our estimate. However, if the margin of error were larger, this would indicate that our estimate is less precise and that we need a larger sample size to obtain a more accurate estimate of the population mean.

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Answer:

il faut diviser chaque nombre par 7/3

donc 2 divisé par 7/3

-5 divisé par 7/3 etc

The area of the largest rectangle is 25 square units.

It is given that the radius of the semicircle is \(4\).

It is required to inscribe a rectangle of maximum area.

Consider a rectangle of sides \(x\), \(y\) as shown in the given figure.

From the attached figure,\(AB=x\), \(OB=r\) and \(OB=\frac{y}{2}\).

Now, in the triangle OAB, apply Pythagoras' theorem as,

\((OA)^{2}=(OB)^{2}+(AB)^2\)

\(r^2=(\frac{y}{2} )^2+x^2\\\\\)

\(16=\frac{y}{4}+x^2\)

\(y^2=4(16-x^2)\)

\(y=2\sqrt{16-x^2}\)

So, the area of the rectangle will be,

Area,

\(A = 2x \times y\)

= \(2x \times \sqrt{(16 - x^2)}\)

Differentiate the area with respect to ,

\(A' = 2 \times \sqrt{(16 - x^2)} - 2x^2/(16 - x^2)\)

Differentiate the area twice as,

When\(x = 0, y = 5\) and when \(x = 5, y = 0\), \(area = 0\).

It implies that area is maximum when the value of x lies between 0 and 5.

This will occur where \(A'= 0\).

⇒ \(2 \times \sqrt{(16 - x2) }- 2x^2/(16 - x^2) = 0\)

⇒\(2 \times \sqrt{(16 - x^2)} = 2x^2/(16 - x^2)\)

On simplification, we get,

⇒ \(2 \times (16 - x^2) = 2x^2\)

⇒ \(16 - x^2 = x^2\)

⇒ \(2x^2= 16\)

⇒ \(x^2 = 16/2\)

⇒ \(x = \sqrt{8}\)

Now, \(y = \sqrt{(16 - x^2)}\) becomes

⇒\(y = \sqrt{(16 - (\sqrt8)^2)}\)

⇒ \(y = \sqrt{(16 - 8)}\)

\(y =\sqrt{8}\)

Maximum area = 2xy

\(=2(\sqrt{8)}(\sqrt{8})\)

\(=16\)

Therefore, the area of the largest rectangle is 16 square units.

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Answer:

1.9

Step-by-step explanation: This should be correct.

Answer:

1.9

Step-by-step explanation:

10,9,11,6,9 = 1.9

Answer:

multiply both sides by 5 and divide both sides by 3

Step-by-step explanation:

3/5a=6

multiply both sides x 5

3a=30

divide both sides by 3

a=10

Each test's 0.01 level of significance result will depend on whether the null hypothesis is accepted or rejected.

For each independent variable, the t test will compare the mean of the variable to a given value or the means of two groups. The conclusion for each test at the 0.01 level of significance will depend on whether the null hypothesis is rejected or not. If the null hypothesis is rejected, then the independent variable is considered to be statistically significant at the 0.01 level of significance.

If the null hypothesis is not rejected, then the independent variable is not considered to be statistically significant at the 0.01 level of significance. This means that the results of the study do not provide sufficient evidence to suggest that the independent variable has an effect on the dependent variable.

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The properties of radicals to simplify the expression is 2 √22. .

\(\sqrt[3]{6} * \sqrt[3 ]{72} / \sqrt[3]{2}\) =2 √22.

2 √22 = 88 .

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The solution is: the surface area of the cylinder is 34.16 cm².

Here, we have,

from the given diagram, we get,

For surface area of a cylinder:

A = 2(π) × (radius) × (height) + 2(π)×(radius squared)

For the first half of that equation:

2(π) × (radius) × (height)

2(3.14)×(0.8)×(6)

= 30.14 cm²

Now the second half of that equation, the area of the circle ends:

2(π)×(radius squared)

= 2×(3.14)×(0.8)×(0.8)

= 4.02 cm²

Add them up:

30.14 cm²+4.02 cm² = 34.16 cm²

Hence, The solution is: the surface area of the cylinder is 34.16 cm².

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Any equation in the variable x that contains a logarithm is called a logarithmic equation.

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Answer:

Step-by-step explanation:

To evaluate the given expression, we need to substitute the given values for x, y, and z. The expression becomes:

yz + x²

Substituting the given values, we get:

(6.1 * 0.2) + (3.2^2)

This simplifies to:

1.22 + 10.24

Therefore, the value of the expression is approximately 11.46.

11.46

gimme brainlyest gang

The values of ∂z/∂r and ∂z/∂s. These partial derivatives will depend on the specific function F(u, v, w) provided.

To find ∂z/∂r and ∂z/∂s, we need to differentiate z = F(u, v, w) with respect to r and s.
Given that u = r^2, v = -2s^2, and w = ln(r) + ln(s), we can substitute these values into z = F(u, v, w).
So, z = F(r^2, -2s^2, ln(r) + ln(s)).
To find ∂z/∂r, we differentiate z with respect to r while treating s as a constant. This gives us:
∂z/∂r = ∂F/∂u * ∂u/∂r + ∂F/∂w * ∂w/∂r.
Similarly, to find ∂z/∂s, we differentiate z with respect to s while treating r as a constant. This gives us:
∂z/∂s = ∂F/∂v * ∂v/∂s + ∂F/∂w * ∂w/∂s.
Since we don't have the specific function F(u, v, w) mentioned in the question, we cannot determine the values of ∂z/∂r and ∂z/∂s. These partial derivatives will depend on the specific function F(u, v, w) provided.

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Answer:

dumb dumb

Step-by-step explanation:

Answer:

y=2x+9

Step-by-step explanation:

y-y(0)=m(x-x(0))

y-1=2(x+4)

Answer:

Angle 1 = 115 degrees

Angle 2 = 65 degrees

Step-by-step explanation:

Angle 1: Same-side interior angle of Line 1

Angle 2: Same-side interior angle of Line 2

We know that the difference between the angles is 50 degrees. Since the angles are supplementary, we can write the equation:

Angle 1 + Angle 2 = 180

Now, we need to express the difference between the angles in terms of Angle 1 or Angle 2. We can choose either angle, so let's express it in terms of Angle 1:

Angle 1 - Angle 2 = 50

We can rewrite this equation as:

Angle 1 = 50 + Angle 2

Now substitute this expression for Angle 1 into the first equation:

(50 + Angle 2) + Angle 2 = 180

Combine like terms:

2Angle 2 + 50 = 180

Subtract 50 from both sides:

2Angle 2 = 130

Divide by 2:

Angle 2 = 65

Now substitute this value back into the equation for Angle 1:

Angle 1 = 50 + Angle 2

Angle 1 = 50 + 65

Angle 1 = 115

Therefore, the angles are as follows:

Angle 1 = 115 degrees

Angle 2 = 65 degrees

The variance for the sum of the squared deviation scores is SS = 20 for a sample of n = 5 scores is 5.

The formula for the variance of a sample is:

\(s^2\) = SS / (n - 1)

where SS is the sum of squared deviation scores, n is the sample size, and \(s^2\) is the variance.

In this case, SS = 20 and n = 5, so we can substitute these values into the formula:

\(s^2\) = 20 / (5 - 1)

\(s^2\) = 5

Therefore, the variance for this sample is 5.

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The inequality that represents the number d of dragonfly’s you must catch to earn a new high score, d> 1200.

Mathematical expressions with inequalities are those in which the two sides are not equal. Unlike to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

Given:

To set a new record, you must score at least

= 36,480 – 34,280

= 2,200 points.

When you have earned 35,000-34,280 points, you need 720 more to qualify for the bonus.

Total = 36,000 points after obtaining 720 dragonflies.

Bonus points = 1000 points.

As, we need more than 480 additional dragonflies to surpass your previous best.

So, The total of all the dragonflies shows that more than 1200 are required.

Then, the inequality is d> 1200.

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