find the value of given expression

\( \sqrt{25 \times 25} \)
​

Answer:3200 m²

Step-by-step explanation: length times width so 80*40

Answer: 3,200 meters

Step-by-step explanation:

Area of a rectangle = length times width

A=lw

A=80(40)

A=3,200 meters

Answer:

(-4, 2).

Step-by-step explanation:

8x + 5y=-22

-3x - 5y = 2   Adding the 2 equations:

5x = -20

x = -4.

Substitute x = -4 in the first equation:

8(-4) + 5y = -22

5y = -22 + 32

5y = 10

y = 2.

Answer:

\(x=-4,\:\\y=2\)

Step-by-step explanation:

\(\begin{bmatrix}8x+5y=-22\\ -3x-5y=2\end{bmatrix}\\\mathrm{Multiply\:}8x+5y=-22\mathrm{\:by\:}3\:\mathrm{:}\:\quad \:24x+15y=-66\\\mathrm{Multiply\:}-3x-5y=2\mathrm{\:by\:}8\:\mathrm{:}\:\quad \:-24x-40y=16\\\\\begin{bmatrix}24x+15y=-66\\ -24x-40y=16\end{bmatrix}\\\\-24x-40y=16\\+\\\underline{24x+15y=-66}\\-25y=-50\\\begin{bmatrix}24x+15y=-66\\ -25y=-50\end{bmatrix}\\-25y=-50\\\mathrm{Divide\:both\:sides\:by\:}-25\\\frac{-25y}{-25}=\frac{-50}{-25}\\y=2\\\)

\(\mathrm{For\:}24x+15y=-66\mathrm{\:plug\:in\:}y=2\\24x+15\times\:2=-66\\24x+30=-66\\24x+30-30=-66-30\\24x=-96\\\frac{24x}{24}=\frac{-96}{24}\\x=-4\\\\\\x=-4,\:y=2\)

Answer:

x=10

Step-by-step explanation:

Answer:

x=10

Step-by-step explanation:

3+17=20

20/2=10

x=10

Answer:

The correct answer is c.) 3/36.There are three favorable outcomes (2, 11, and 12) out of a total of 36 possible outcomes (assuming a fair six-sided number cube). Therefore, the probability of X being a 2, 11, or 12 is 3/36, which can be simplified to 1/12.

Step-by-step explanation:

The lower bound of the 95% confidence interval is given as follows:

7.981 mm.

The level of confidence of the statement is of 95%.

The t-distribution is used when the standard deviation for the population is not known, and the bounds of the confidence interval are given according to the equation presented as follows:

\(\overline{x} \pm t\frac{s}{\sqrt{n}}\)

The variables of the equation are listed as follows:

The critical value, using a t-distribution calculator, for a two-tailed 95% confidence interval, with 100 - 1 = 99 df, is t = 1.9842.

The parameters for this problem are given as follows:

\(\overline{x} = 8.1, s = 0.6, n = 100\)

Hence the lower bound of the interval is given as follows:

8.1 - 1.9842 x 0.6/10 = 7.981 mm.

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\(\frac{f}{g}(2) = \frac{2}{11}\\\)

\(\frac{f}{g}(2) = \frac{f(2)}{g(2)} \\ \frac{f}{g}(2) = \frac{(2)^2}{5(2)^2 +2} \\ \frac{f}{g}(2) = \frac{4}{5(4) +2} \\ \frac{f}{g}(2) = \frac{4}{20 +2} \\ \frac{f}{g}(2) = \frac{4}{22} \\ \frac{f}{g}(2) = \frac{2}{11}\)

Answer:

A

Step-by-step explanation:

The lowest test score that still qualifies for a scholarship is 632.

To discover the lowest test score that still qualifies for a scholarship, we will use the NORM.INV feature in Excel. This feature returns the inverse of the usual everyday cumulative distribution feature, which can be used to discover the score that corresponds to a given percentile.

The percentile we are interested by is the top 5%, which corresponds to a cumulative possibility of 0.95. we are able to use the formula:

NORM.INV(0.95, 600, 85)

Wherein 0.95 is the probability, 600 is the mean, and 85 is the standard deviation.

Evaluating these component in Excel offers us:

632.39

Rounding to the closest integer, we get:

632

Consequently, the test score which is lowest but still qualifies for a scholarship is 632.

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Answer:

Two points, (0,2) & (1,10)

Step-by-step explanation:

We already know the first point (0,2) just by looking at the +2 in the problem

Now we use the system rise/run to solve the problem

Go up vertically 8 to get to 10 (this is the rise part)

Next, go over 1 to get your x-axis point (this is the run part)

So our next point is (1,10)

Hope this helps and please award brainliest if possible :)

Answer:

Step-by-step explanation:

Using the equation given:

8 is the gradient and 2 is the y-intercept

We can draw a point at (0,2) y-intercept

And we can substitute x with 1 to give us (1,10)

Use the diagram below for further details

A)  The class's average score is:

2050 / 2500 = 0.82 or 82% .

b) The standard deviation of the scores for Monsieur Beeckman's class is 53.78%.

c)   Approximately 66.13% of Monsieur Blanc's students scored between 60% and 90%.

(a) What is the new average score for Monsieur Beeckman's class?

If 13 students failed with a score of 50%, and there are 25 students in total, then 12 students must have successfully cheated with a score of 100%. The sum of all the scores is:

(13 * 50) + (12 * 100) = 2050

The total possible points for the exam is:

(13 * 100) + (12 * 100) = 2500

Therefore, the class's average score is:

2050 / 2500 = 0.82 or 82%

(b) What is the standard deviation of the scores for Monsieur Beeckman's class?

We can calculate the standard deviation by first finding the variance of the scores:

variance = [(13 * (50 - 82)²) + (12 * (100 - 82)²)] / 25

= 2896

Then, the standard deviation is the square root of the variance:

standard deviation = sqrt(2896) = 53.78

Therefore, the standard deviation of the scores for Monsieur Beeckman's class is 53.78%.

(c) What percentage of Monsieur Blanc's students scored between 60% and 90%?

We can use the z-score formula to convert the raw scores to standardized scores (z-scores), which allows us to use a standard normal distribution table. The formula is:

z = (x - μ) / σ

where x is the raw score, μ is the mean score, and σ is the standard deviation.

For a score of 60% in Monsieur Blanc's class:

z = (60 - 75) / σ = -0.5556

For a score of 90%:

z = (90 - 75) / σ = 1.6667

Using a standard normal distribution table, the proportion of scores between -0.5556 and 1.6667 is:

0.9525 - 0.2912 = 0.6613

Therefore, approximately 66.13% of Monsieur Blanc's students scored between 60% and 90%.

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Answer:

4- true

5-true

6-false

7-false

8-true

9-true

Step-by-step explanation:

Follow the letters and the sign of congruence

≅

Answer:

C.

Step-by-step explanation:

Answer:

F. 20(3a-10)^2

Please give me brainliest

Step-by-step explanation:

180a^2-1200a+2000

Start by looking for a common factor: In this case, it's 20

From here, divide 20 from every number

180a^2/20= 9a^2

1200a/20= 60a

2000/20= 100

You end up with:

20(9a^2-60a+100)

But you can still simplify (9a^2-60a+100)

(9a^2-60a+100) simplifies to (3a-10)^2

So the answer is:

20(3a-10)^2

Answer:

this is so easy like just put variables a in b

Step-by-step explanation:

hope you get it

The Question is what is the mean of the snakes lengths. The mean means you line all of your numbers up in order then you add all of the numbers up and when you get the total you divide the total plus the amount of numbers you have. So in this case the numbers would be: 8,17,22,39,44..next you would add all them up so it would be  the next step would be to count the numbers up and divide that by the total...so it will be 5/130=26 so the mean for this question will be 26....hope it helps :)

The weight of the truck,  When a loaded truck pulls onto it, the boat sinks an additional 5.00cm into the river is  11,788 N.

To discover the weight of the truck, we ought to utilize the concept of buoyancy.

When the truck pulls onto the vessel, it uproots a sum of water that breaks even with its claimed weight. The weight of this uprooted water makes an upward buoyant constraint on the pontoon.

The watercraft sinks an extra 5.00 cm, which suggests that the buoyant constraint breaks even with the weight of the truck furthermore the weight of the uprooted water, and this adds up to the weight causing the boat to sink assist.

Let's accept that the thickness of water is 1000 kg/m³ (this can be ordinary esteem for new water). The volume of water uprooted by the pontoon is rise to its length times its width times the profundity it sinks into the water:

V = (6.00 m)(4.00 m)(0.05 m) = 1.20 m³

The weight of this uprooted water is:

Wwater = Vρg = (1.20 m³)(1000 kg/m³)(9.81 m/s²) ≈ 11,788 N

where ρ is the thickness of water and g is the speeding up due to gravity.

Since the buoyant drive is broken even with the weight of the truck furthermore the weight of the uprooted water, we have:

Wtruck + Wwater = Fbuoyant

where Wtruck is the weight of the truck and Fbuoyant is the buoyant drive. Ready to improve this condition to illuminate for the weight of the truck:

Wtruck = Fbuoyant - WWater

The buoyant drive is broken even with the weight of the water uprooted by the watercraft, which we calculated prior to being around 11,788 N. In this manner:

Wtruck = 11,788 N - 0

 Wtruck ≈ 11,788 N

So, the weight of the truck is around 11,788 N. 

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The full question is

A small ferryboat is 4.00m wide and 6.00m long. When a loaded truck pulls onto it, the boat sinks an additional 5.00cm into the river. What is the weight of the truck?

25

Vertical angles are congruent/equal :

Answer:

25°

Step-by-step explanation:

Because its equal to the angle across it.

Answer:

The answer is 0.55

Step-by-step explanation:

Because 55% = \(\frac{55}{100}\) = 0.55

Answer:

I have something you might like!

Here's the key ;)

Step-by-step explanation:

I would appreciate Brainliest! I hope I helped! :)

The odds of selecting a red 9 is 1/26.

Probability of an event E is represented by P(E)  can be defined as (the number of favorable outcomes) / (Total number of outcomes).

Given the total number of cards in a standard deck = 52

there can be  only two red9 as one 9 from heart and one red from diamond.

So the number of outcome for red 9 =2

the probability of odds of selecting red 9 is \(\frac{2}{52}\) which can be further simplified into \(\frac{1}{26}\).

Therefore , The odds of selecting a red 9 is 1/26.

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Left-handedness is more common than usual among mathematicians and more common than usual among artists option (d) more; more is correct.

An equation set and a set of variables that define connections between the variables make up a mathematical model, which often explains a system.

As we know,

Mathematicians are more likely than average to be left-handed, while artists are more likely than average to be left-handed.

Thus, Left-handedness is more common than usual among mathematicians and more common than usual among artists option (d) more; more is correct.

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Answer:

16

Step-by-step explanation:

8 questions

2 answers per question

8*2= 16

If the range on an X-bar-R chart suddenly and significantly increases, it indicates an increase in process variation. In this scenario, the mean (X-bar) may or may not be affected.

The mean represents the central tendency or average value of the process, while the range measures the dispersion or variation within the process.

If the mean remains stable and unaffected despite the increase in range, it suggests that the process average is still within control. However, if the range increase is accompanied by a significant shift in the mean, it indicates a potential shift in the process average.

To make a definitive determination, additional analysis and investigation are necessary to identify the underlying cause of the increased range and its impact on the process mean.

This could involve examining individual data points, performing hypothesis testing, or conducting further statistical analysis to assess the process stability and potential issues.

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Answer- Rhombuses must have 4 equal sides, opposite sides are parallel and opposite angles are equal. They cut in half each other to bisect.

Answer:

A rhombus has to have 4 sides that are all equal in length, opposite sides that are parallel, and equal opposite angles.

Step-by-step explanation:

Answer:

240

Step-by-step explanation:

4 kinds of crust along with 5 different meats, 4 different  cheeses, and 3 vegetables for toppings

Combos = 4*5*4*3

               =240

The complement of an event is the probability of the event not occurring. In this case, if the probability of an event is 4/7, then its complement would be 1 - 4/7, which simplifies to 3/7.

The complement of an event A, denoted as A', is the probability of A not occurring. In this case, if the probability of an event A is 4/7, then the probability of A' is given by:

P(A') = 1 - P(A)

Substituting the value of P(A) as 4/7:

P(A') = 1 - 4/7

To subtract fractions, we need a common denominator:

P(A') = 7/7 - 4/7

Simplifying the expression:

P(A') = 3/7

Therefore, the complement of the event with a probability of 4/7 is 3/7.

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Answer:

cos 120°

Explanation:

Given the trigonometric expression:

By the trigonometric Law of Cosine Addition:

Let A=90, and B=30. Therefore:

The equivalent form of the expression is cos 120°.

Using Pythagoras theorem, the size of the TV will be 65 inches.

What is Pythagorean Theorem?

The Pythagorean Theorem is a fundamental concept in mathematics that describes the relationship between the sides of a right triangle. It states that in any right triangle, the sum of the squares of the lengths of the two shorter sides (the legs) is equal to the square of the length of the longest side (the hypotenuse).

In equation form, the Pythagorean Theorem can be written as:

a² + b² = c²

where a and b are the lengths of the two legs and c is the hypotenuse.

Now,

We can use the Pythagorean theorem to find the diagonal measure of the television screen.

In this case, the height and width of the screen form the legs of a right triangle, so we can use the following equation:

(diagonal)² = (height)² + (width)²

Substituting the given values, we get:

(diagonal)² = (32)² + (57)²

(diagonal)² = 1024 + 3249

(diagonal)² = 4273

Taking the square root of both sides

diagonal = √(4273) ≈ 65.37

Therefore, the size of the TV screen, as measured diagonally, is approximately 65 inches (rounded to the nearest whole number).

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Answer:

5/12 ,7/9 ,1/3 , 2/3, 1/4

2/7 ,2/4, 5/8, 11/4 ,3/2

Step-by-step explanation: