please help urgent easy 8th grade math

Answer: EZ BRUH

Step-by-step explanation:here's da answer 210

Answer:

All real numbers

Step-by-step explanation:

1.) Distribute the 5 on the left side of the equation

5x-45+3= 5x-42

2.) Add the -45 and 3

5x-42=5x-42

3.) Add -42 to one side

5x=5x

4.) Subtract 5x

0x=0

All real numbers

Answer:

OD

Step-by-step explanation:

Angles in a triangle add to 180 degrees. The only set of angles which total to 180 is the values in OD

The correct statement as to how to obtain the length of the hypotenuse is given as follows:

Multiply that leg's length by √2.

The Pythagorean Theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

The theorem is expressed as follows:

c² = a² + b².

In which:

On a 45-45-90 triangle, we have that the two sides have the same length, hence the hypotenuse is obtained as follows:

h² = l² + l²

h² = 2l²

\(h = \sqrt{2 \times l^2}\)

\(h = l\sqrt{2}\)

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Answer:

145

Step-by-step explanation:

Because what you want to do is add 260 to 182 then subtract from 587. I hope that helped! :)

Answer:

x > 14 ; x < 12

Step-by-step explanation:

Perimeter > 50, so that means all the sides added together are larger than 50. x+4+2x-6+10>50, so x > 14

Area < 138, so that means 3*(4x-2) < 138, so x < 12

Answer:

9.

Step-by-step explanation:

The square root of 10 is approximately 3.16 so it would be closer to 9.

Answer:

-6w+49

Step-by-step explanation:

w-7(w-7) <-- Distribute the -7

w-7w+49 <-- Combine like terms

-6w+49

Answer: 170.18 cm

Step-by-step explanation:

[(5×12)+7] x 2.54 = 67

x 2.54 = 170.18 cm.

Using the conversion factors, we can determine that 5.7 feet are comparable to 173.736 cm.

You can alter the units of a measured quantity without changing its value by using a conversion factor or a formula that illustrates how the units relate to one another.

The numerator and denominator of a conversion ratio (or unit factor) are always the same numbers stated in various units (1).

Utilizing conversion factors, one unit of measurement can be changed into another.

The conversion procedure includes switching the company's single-entry accounting system to a double-entry one.

So, we have the knowledge that:
1 feet = 30.48 cm

Similarly,

5.7 * 30.48 = 173.736

5.7 feet = 173.736 cm

Therefore, using the conversion factors, we can determine that 5.7 feet are comparable to 173.736 cm.

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One advantage of installing a copper wire twisted-pair cable versus a fiber optic cable is the lower cost.

The cost advantage of copper wire twisted-pair cable over fiber optic cable stems from several factors. Firstly, the materials used in copper wire cables are less expensive than the specialized materials used in fiber optic cables.

Copper wire is readily available and widely used in various industries, resulting in lower production costs. Fiber optic cables, on the other hand, require the use of costly materials such as glass or plastic fibers, which need to be carefully manufactured to ensure optimal performance.

Additionally, the installation and maintenance of copper wire cables are generally more straightforward and less expensive compared to fiber optic cables.

Copper cables can be easily terminated and connected using standard connectors, while fiber optic cables require more precise fusion splicing or mechanical connectors, which can increase installation costs.

Copper wire cables are a popular choice for short-distance communication due to their cost-effectiveness.

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Two lines are perpendicular if the multiplication of their slopes is equal to -1.

Isolating y from the equation:

The slope of this line is 2. Therefore, the slope of the line perpendicular to this one will be:

The income you need to afford a $425,000 house is largely dependent on your debt-to-income ratio, credit score, and down payment. However, a general rule of thumb is to have an annual income that is at least three times the purchase price of the home, which in this case would be $1,275,000.

To more accurately determine the income needed to afford a $425,000 house, consider factors such as the interest rate on the mortgage, property taxes, homeowners insurance, and any homeowner association fees.

These additional expenses can significantly impact your monthly mortgage payment and thus your income requirements.
It's important to keep in mind that lenders have varying criteria when determining mortgage eligibility and income requirements, so it's best to speak with a mortgage professional to get a more accurate estimate based on your individual circumstances.

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Answer:  " \(\frac{5}{11}\) " .

___________________

Step-by-step explanation:

___________________

0.45 (with repeating bar over the "45") ;

 =  " \(\frac{45}{99}\) "  ;  note: since "45" are the 2 (two) digits that repeat "infinitely" ; we divide "45" by "99" ;

that is, by "99" (the "2 digit number" (as opposed to: "999") ;

___________________

So:  "45 ÷ 99 " ; we can write this as a fraction; an reduce this fraction its "lowest terms" ;  each of these numbers:  "45" and "99" can be divided by "9" ; to get an exact value:

___________________

 " \(\frac{45}{99}\) = "(45 ÷ 9) / (99 ÷ 9) " = " 5/11 " ;

___________________

The answer is:  " \(\frac{5}{11}\) " .

___________________

Hope this is helpful to you!

Best wishes!

___________________

Answer:

33

Step-by-step explanation:

To find the mean of 5 numbers, you add the 5 numbers and divide by 5.

Let the unknown number = x.

(27 + 42 + 43 + 35 + x)/5 = 36

(x + 147)/5 = 36

x + 147 = 180

x = 33

Answer: 33

TRUE: Basketball players' height is seen as a continuous variable.

Yes, as lengths are continuous variables, the random variable does indeed refer to length.

Thus, Basketball players' height is seen as a continuous variable

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Answer:no problem homie

x= 2

Step-by-step explanation:

Answer:

x < 1

Step-by-step explanation:

2x + 2 < 6x - 2

2 < 4x - 2

4 < 4x

x < 1

The required answer is  sec θ = -√2.

Explanation:-

Part 1: Given cosine of theta is equal to radical 3 over 2 on the domain [0,[infinity]).

To determine three possible angles θ,  the cosine inverse function which is a cos and since cosine function is positive in the first and second quadrant. Therefore  conclude that, cosine function of θ = radical 3 over 2 implies that θ could be 30 degrees or 330 degrees or 390 degrees. So, θ = {30, 330, 390}.Part 2:To convert 495° to radians, multiply by π/180°.495° * π/180° = 11π/4To find sec θ, we use the reciprocal of the cosine function which is sec.

Therefore, sec θ = 1/cos θ.To find cos 11π/4,  the reference angle, which is 3π/4. Cosine is negative in the third quadrant so the final result is sec θ = -√2.

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The probability associated with obtaining a particular value of z is referred to as its statistical probability or simply its probability. It represents the likelihood of observing a specific value of z in a given statistical distribution.

The probability of a specific value of z can be calculated using various statistical methods, depending on the distribution being considered. In statistics, z represents a standard score or a z-score. It is a measure of how many standard deviations a particular value is away from the mean of a distribution. The probability associated with a specific value of z is determined by the characteristics of the distribution, such as its shape, mean, and standard deviation. Different distributions, such as the normal distribution or the t-distribution, have different methods for calculating probabilities associated with specific values of z.

The probability associated with a particular value of z can be useful in hypothesis testing, confidence interval estimation, or determining the likelihood of an event occurring. By understanding the probability distribution of z-values, statisticians can make informed decisions and draw conclusions based on data analysis.

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Answer:

- 8x > 24

Step-by-step explanation:

Given

- 6x - 10 > 14 + 2x ( subtract 2x from both sides )

- 8x - 10 > 14 ( add 14 to both sides )

- 8x > 24 ← required missing step

Divide both sides by - 8, reversing the symbol as a result of dividing by a negative quantity.

x < - 3 ← is the solution

The probability that a data value is between 56 and 64 is 62.5%. Option D is the correct answer.

The given normal distribution has the following parameters:

Mean = 62

Standard deviation = 4

To find the probability that a data value is between 56 and 64, we need to find the z-scores corresponding to these values. Using the z-score formula, $$z=\frac{x-\mu}{\sigma}$$

Where x is the data value, µ is the mean, and σ is the standard deviation. Substituting the given values, we get:

For x = 56,$$z=\frac{56-62}{4}=-1.5$$For x = 64,$$z=\frac{64-62}{4}=0.5$$

Now we need to find the probability that a data value is between these z-scores using the standard normal distribution table. The table gives the area under the curve to the left of a given z-score. To find the area between two z-scores, we need to find the difference between the areas to the left of the two z-scores.

Using the standard normal distribution table, we find:

Area to the left of z = -1.5 is 0.0668

Area to the left of z = 0.5 is 0.6915

Therefore, the area between z = -1.5 and z = 0.5 is:0.6915 - 0.0668 = 0.6247

Rounding off to the nearest tenth of a percent, we get 62.5%. Hence, the correct option is D.

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Answer:

20 seconds

Step-by-step explanation:

Given the following :

Alarm 1 (goes off every 10 seconds)

Alarm 2 (goes off every 5 seconds)

Alarm 3 (goes off every 4 seconds)

If they all go off now, how long will it take all to go off at the same time again.

Obtain the multiples of the time in seconds in which each alarm goes off and select the lowest multiple common to all three;

Multiples of 10 : 10, 20, 30, 40, 50,...

Multiples of 5 : 5, 10, 15, 20, 25, 30, 35, 40,...

Multiples of 4 : 4, 8, 12, 16, 20, 24, 28, 32, 36,....

Hence, the lowest multiple common to all three alarm times is 20.

Hence, all three alarms will go off at the same time again after 20 seconds

The average change in elevation of the object in meters per second is -69/10.

Find the change in elevation of the object. The object started at an elevation of 0 meters and fell to an elevation of -4.9 meters. Therefore, the total change in elevation was -4.9 meters.

The time elapsed was 0.71 seconds.

Calculate the average change in elevation per second. Divide -4.9 meters by 0.71 seconds to get -6.90 meters per second. Express the answer as a rational number. -6.90 meters per second can be expressed as -69/10 meters per second. Therefore, the average change in elevation of the object, in meters per second, is -69/10.

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Answer:

so ans is b

Step-by-step explanation:

from eqn 1

x=(36-2y)/4

putting x in y we get in 2

3(36-2y/4)+5y=34

108-6y+20y=136

14y=28

so y=2

now x=36-4)/4=32/4=8

H0: The distribution of lunch preferences is 70% cafeteria, 10% hut, 10% taco wagon, and 10% pizza.

Ha: The distribution of lunch preferences is not 70% cafeteria, 10% hut, 10% taco wagon, and 10% pizza place.

In hypothesis testing, we have a null hypothesis (H0) and an alternative hypothesis (Ha). The null hypothesis represents the claim or assumption we want to test, while the alternative hypothesis represents the opposite or alternative claim.

In this case, the null hypothesis (H0) states that the distribution of lunch preferences is 70% cafeteria, 10% hut, 10% taco wagon, and 10% pizza place. The alternative hypothesis (Ha) states that the distribution of lunch preferences is not 70% cafeteria, 10% hut, 10% taco wagon, and 10% pizza place.

To test these hypotheses, a random sample of 150 students is selected, and their lunch preferences are recorded. The goal is to determine if the observed distribution of lunch preferences in the sample provides enough evidence to reject the null hypothesis in favor of the alternative hypothesis.

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The length of the arc s as required to be determined in the attached image is; 17.5 cm.

It follows from the task content that the length of the arc s is to be determined from the given information.

As evident in the task content, the angle subtended at the center of the two concentric circles is same for the 2cm and 5 cm radius circles.

On this note, it follows from proportion that the length of an arc is directly proportional to the radius of the containing circle.

Therefore, the ratio which holds is;

s / 5 = 7 / 2

s = (7 × 5) / 2

s = 17.5 cm.

Consequently, the length of the arc s is; 17.5 cm.

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True, conditional formulas can be used to exclude data from analysis if certain conditions are met. These formulas, often found in spreadsheet software and programming languages, allow you to set specific criteria that must be met in order for the data to be included or excluded from your analysis.

This can be useful in situations where you need to focus on specific subsets of data, or to remove outliers or irrelevant information from your dataset.

By incorporating conditional logic in your formulas, you can ensure that only relevant and useful data is included in your analysis, making it more accurate and efficient. Overall, the use of conditional formulas can greatly enhance your data analysis by providing a flexible and powerful tool to filter and process your data based on specific requirements.

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Answer:

no.

Step-by-step explanation:

the fact that those three people in his class have a a bit higher mark doesn't absolutely mean that left-handed people are smarter. There is no scientific proof and the fact that those 3 are smarter in maths it's a completely random fact.

hope i was helpful to you

Answer:

negative numbers aren't whole numbers but they are considered to be integers

Answer:Whole numbers don't include negative numbers, fractions, or decimals.

Step-by-step explanation:

depends please comment give more ifnomation on what you are saying if you dont understand

The term which is used to describe an agreement or social institution within (more or less) in a specific environmental issue-area is called the international environmental regime.

The international environmental regime is a term that is used to describe an agreement or social institution with (more or less) agreed-upon principles, norms, rules, decision-making procedures, and programs that govern the activities and shape the expectations of actors in a specific environmental issue area.

The agreement in decisions, laws, regulations, principles and norms in a particular place at a time is the international environmental regime.

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Answer:

17

Step-by-step explanation:

6 x 2 = 12 so 12 + 5 = 17

Dylan would have to pay $17.

For such questions it is best to form an expression.

The parking fee has a fixed cost of $5.

It also has a cost per hour of $2.

This means that if a person spends t hours at the parking lot, they will have to pay $2 per hour for those t hours.

Expression = 2 x t = 2t

Whole expression including the fixed amount is:

5 + 2t

If Dylan parked for 6 hours therefore, he would pay:

= 5 + 2 t

= 5 + 2 x 6

= $17

Dylan would therefore have to pay $17 if he left his car for 6 hours.

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Answer:

g(-8) = -62

Step-by-step explanation:

solve for x:

8x +2 = -62 subtract 2 from each side

8x =-64 divide by 8

x =-8