I don't know how to do any of this

Answer:

Option 2

Step-by-step explanation:

We are given points (2,5) and the slope form

So all we have to do is plug in what we know into the equation:

y-5=5/7(x-2)

Correct answer is 2nd option

The lateral surface area of a right circular cone is 234.09 \(cm^2\)

Given that volume = \(320cm^3\)

Radius = 8cm

we know that

The volume of the right circular cone = \(V = \frac{\pi r^2h}{3}\)

\(320 = \frac{22 \times 8^2h}{3 \times 7}\)

after solving the equation we get

h =  4.77cm

now, the lateral surface area of the cone = \(A = \pi \times r \times \sqrt{h^2 + r^2}\)

now putting the values in the above equation

\(A = \pi \times 8 \times \sqrt{4.77^2 + 8^2}\)

A = 234.09 \(cm^2\)

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Answer:

3) 3k+20

4) 4+2d

Step-by-step explanation:

You first have to distribute by multiplying the number next to the expression in the parenthesis. Then you combine like terms.

3) 5(k+4)-2k

  Step 1: (5×k= 5k) (5×4=20) equation is now 5k+20-2k

  Step 2: 5k-2k=3k since they both have the same variable you combine like terms. Equation is now 3k+20 (Final answer)

4) 2(3+d-1)

  Step 1: (2×3=6) (2×d=2d) (2×[-1]=2) Equation is now 6+2d-1.

  Step 2: (6-2=4) Since both 6 and 1 don't have any variable their like terms and you combine them. Equation is now 4+2d (Final answer)

Answer:

x=-9/7, y=22/7

Step-by-step explanation:

Since we're using substitution, and the second equation already has the y isolated on one side, we just substitute the 'y' in 4y from the first equation with the right side of the second equation, which gets us 2x+4(3x+7)=10. Then, we simplify to get that x=-9/7. Now, we use substitution again to replace the x value in the second equation to get y. So 3(-9/7)+7=y, y=22/7.

Final answer: x=-9/7, y=22/7

I hope this helped! :D

According to all Reports of U.S media and other,

approx. 97 years after in 1972 ban did it take for ddt levels to move from a rapid to slower rate of decline.

DDT (dichloro-diphenyl-trichloroethane) has been one of the most commonly used pesticide chemicals in the United States for many years and was first synthesized in 1874. However, its efficacy as an insecticide was not discovered until 1939. Shortly thereafter, especially during World War I, the United States began producing large amounts of DDT abroad to combat vector-borne diseases such as typhoid fever and malaria. It declined sharply, falling from a peak of about $80m that year to just under $12m in the early 1970s. Over 80% of the amount of pesticides used between 1970 and 1972 was on cotton, with the rest mainly on peanuts and soybeans. The decline in DDT use is due to

(1) increased resistance to insects

(2) development of more effective alternative pesticides

(3) Growing public concern about adverse environmental impacts.

(4) Strengthening government restrictions on the use of DDT.

Residues of the pesticide DDT in the food supply, human tissues, and the environment have declined in recent years, especially since the EPA banned the chemical from major uses in 1972.

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Answer: 64.80% not 100% positive if i did that math right but thats what i got

Step-by-step explanation:

38.8679

Step-by-step explanation:

Step-by-step explanation:

3a² -6a -4a +8

By Grouping method,

= 3a(a-2)-4(a-2)

= (3a-4)(a-2)

Answer:

(3a − 4)(a − 2)

Step-by-step explanation:

i got it on my quiz

Group and factor out the greatest common factor (GCF), then combine.(3a−4)(a−2)

Answer:

B.

Step-by-step explanation:

painting a increases expoonentially

1.05(A value)= N

same for painting b by 1.02x

but a increases .3 %more

The statement that shows the painting's value correctly would be:

B). The value of Painting A increases at a larger constant rate per year than Painting B.

Relative value is characterized as the value of anything that is viewed in comparison to the other object, whether it is an increase or decrease.

In the given situation, the price of Painting A increases dramatically from 15,000 to 19,144 while the price of Painting B increases at a comparatively slower pace and reaches 16,561 only.

This shows that the price in the first case increases by 1.05 times while the latter remains .3% behind and stays at 1.02 times only.

Thus, option B is the correct answer.

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The appropriate p-value for the given test statistic and hypotheses is approximately 0.0253.

Tο determine the apprοpriate p-value fοr the given hypοthesis test, we need tο use the t-distributiοn and the t-statistic value οbtained.

Given:

Null hypοthesis (H0): μ = 130 (pοpulatiοn mean)

Alternative hypοthesis (HA): μ > 130 (pοpulatiοn mean)

T-statistic: t = 2.73

Degrees οf freedοm: df = 5

Tο calculate the p-value, we cοmpare the t-statistic tο the t-distributiοn.

Since the alternative hypοthesis is μ > 130, it is a οne-tailed test, and we are interested in the right tail οf the t-distributiοn.

Using a t-table οr a statistical sοftware, we can determine the p-value assοciated with the t-statistic and the degrees οf freedοm.

Fοr a t-statistic οf 2.73 with 5 degrees οf freedοm, the p-value is apprοximately 0.0257 (assuming a twο-tailed test).

Since we have a οne-tailed test, the apprοpriate p-value is half οf the twο-tailed p-value:

p-value = 0.0257 / 2 = 0.01285

Therefοre, the apprοpriate p-value fοr the given hypοthesis test is apprοximately 0.01285.

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The equation for the horizontal asymptote of the function f is y=Lim x→∞ f(x).

In algebra and calculus, a horizontal asymptote is a horizontal line that the graph of a function approaches as the x-values or input values increase or decrease without bound.

The equation for the horizontal asymptote of a function f is:

Lim f(x) → ∞ = c

Where c is the horizontal asymptote.

Example:

f(x) = x2 + 3x + 2

Horizontal Asymptote:

Lim f(x) → ∞ = ∞

numeric value in equation

For example, if x = 5:

f(5) = 5^2 + 3*5 + 2 = 32

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Answer:

D. 16 + 72n and (2 + 9n) (8)​

Step-by-step explanation:

Select the equivalent expressions.

Distribute to find the equivalent expressions:

A.

71 - 9y and (7x - y) (9)

71 - 9y = 9(7x) + 9(-y)

71 - 9y = 63x - 9y

Not equivalent

B.

5(3t - 6) and 15 - 30

5(3t) + 5(-6) = 15 - 30

15t - 30

Not equivalent (it's missing the variable - t)

C.

4(6a + 86) and 10a + 126

4(6a) + 4(86) = 10a + 126

24a + 344 = 10a + 126

Not equivalent

D.

16 + 72n and (2 + 9n) (8)​

16 + 72n = 8(2) + 8(9n)

16 + 32n = 16 + 72n

Equivalent

Therefore the correct answer is D

Hope this helps!

100 is the least number of sheets of each type he might buy given that reptile stickers come in sheets of 10 and fish stickers come in sheets of 25 and Antonio buys the same number of both types of stickers and he buys at least 100 of each type. This can be obtained by finding LCM(Least Common Multiple) of 10 and 25 and identifying the multiple nearest to 100.

Here in the question it is given that,

We have to find the least number of sheets of each type he might buy.

First we have to find the LCM(Least Common Multiple) of 10 and 25

10 = 2 × 5

25 = 5 × 5    

LCM(10,25) = 2 × 5 = 50  

But  he buys at least 100 of each type, then we recall the multiples of 18 to find the least number which is nearest to 100.

Multiples of 50 = 50, 100, 150,...

The number nearest to 100 is 100 itself.

Hence 100 is the least number of sheets of each type he might buy given that reptile stickers come in sheets of 10 and fish stickers come in sheets of 25 and Antonio buys the same number of both types of stickers and he buys at least 100 of each type.

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The linear equations for cost price and selling price are c = 3x + 35 and  y = 5x.

An equation is a combination of different variables, in which two mathematical expressions are equal to each other.

Let Max make x cups of lemonade cup.

According to given conditions,

Cost of 1 cup of lemonade = $3.

Also, Max pay for renters fee = $35.

The cost of x cups of lemonade = 3x

The total cost c = 3x + 35

Since, Max sells lemonade for $5 per cup.

Let the selling price is represented by y,

Then selling price y = 5x

Hence, linear equations for cost price and selling price are c = 3x + 35 and  y = 5x.

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The Mean of the sample is = 3.7

The Standard deviation of the sample is  = 0.1125

If we assume that the population mean and standard deviation of GPAs are 3.7 and 0.9, respectively, then the mean of the distribution of sample means of size 64 would also be 3.7, and the standard deviation would be:

standard deviation = population standard deviation / sqrt(sample size)

= 0.9 / sqrt(64)

= 0.1125

So the mean and standard deviation of the distribution of sample means would be approximately:

mean = 3.7

standard deviation = 0.1125

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You need to adjust the tube of the microscope to 6.83cm in order to view the sample in focus with a completely relaxed eye

Given, Focal length of the eyepiece,  = 2.50 cm

The focal length of the converging lens, f = 1.00 cm

The distance of the object, p = 1.30 cm

Lens equation, \(\frac{1}{f} = \frac{1}{p} + \frac{1}{q}\)

Substitute the values in the above equation

\(\frac{1}{1.00} = \frac{1}{1.30} + \frac{1}{q}\)

q = 4.33 cm

now, the image is formed at the focal point of the eyepiece,

therefore, the distance between the objective and the eyepiece, d =  + q = 2.50 cm + 4.33 cm

d = 6.83 cm

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15. 70° because a right angle is 90° and we have the angle of ADB which is 20°. So 90°-20°=70°.

16. 70° because angle PSQ is 60° and angle QSR is 10°. So 60°+10°=70°.

17. 55° because it says it in the explanation. I assume this is a typo and they meant to ask the measurement of ADC and in that case it would be 130° because angle ADB is 75° and angle BDC is 55°. 75°+55°=130°.

18. 40° because angle PSQ is a right angle which means it's 90°. So 130°-90°=40°.

19. 140° because angle ADB is 120° and angle BDC is 20° so 120°+20°=140°.

20. 125° because again it's in the explanation. But if it's a typo and they meant what is the measurement of PSQ then it is 50° because PSR is 125° and QSR is 75° so 125°-75°=50°.

Hope this helps! :)

Answer:

A

Step-by-step explanation:

First off we can see that there are 46 pencils - and 7 students - so we can divide the two

46/7 is not a whole number, so we need to find a number that can be multiplied by 7, and is right below 46.

If you multiply 7 by 6, you get 42, which is the highest you can get with multiply by 7, which is also below 46.

Now that we know that each student gets 6 pencils, we need to find out how many are left.

We can do 46 (total pencils) minus 42 (pencils given) to get a leftover of 4 pencils, so the answer is A.

Answer:

Option 2 and 4

Step-by-step explanation:

Area of the big rectangle to fit small ones:

Area of small rectangles:

Now, the answer options:

The amount of money in Lucia's account after 5 years will be $1,105.5.

A loan or deposit's interest is computed using the starting principle and the interest payments from the ago decade as compound interest.

We know that the compound interest is given as

A = P(1 + r)ⁿ

Where A is the amount, P is the initial amount, r is the rate of interest, and n is the number of years.

Lucia opened a savings account and deposited $600.00 as principal. The account earns 13% interest, compounded annually. Then the amount of money after 5 years will be given as,

A = $600 × (1 + 0.13)⁵

A = $600 × (1.13)⁵

A = $600 × 1.84

A = $1,105.5

The amount of money in Lucia's account after 5 years will be $1,105.5.

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Given that the ordered pair makes the function and these pairs are

[ (2,5), (7,1), (5,9), (8,0), ( , ) ]

Since the function is the one that has the input having only one output.

Hence, the given options (3,4) is correct.

Therefore the ( 3, 4 ) is the pair.

Answer:

--------------------------------

Given lines:

Convert both equations to slope-intercept form of y = mx + b:

Slopes are same, so these are parallel lines, and the distance between parallel lines is:

Substitute and calculate:

Answer:

50

Step-by-step explanation:

16+34=50

50 seventh-grade students responded to the survey.

In mathematics, data refers to a collection of facts, numbers, observations, or measurements that have been gathered or recorded. Data is used to represent and analyze information in various mathematical contexts, such as statistics, probability, and data analysis.

First, Eighth Grade

= 10 + 15

= 25

Second, Seventh Grade

= 16 +34

= 50

Thus, 50 seventh-grade students responded to the survey.

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Answer:

3

Step-by-step explanation:

2•3=6 +2=8 8 squared is 8•8 which is 64. This problem is quite simple.

Answer:

X=3

Step-by-step explanation:

Step 1: Find the square root of 64

since there is an exponent of 2 around your paranthesis, you must get rid of that first, by finding the square root of the first part of the equation and 64. then you will have (2x+2)=8

Step 2: Subtract 2

next subtract 2 from both sides of the equation, and you will have 2x=6

Step 3: divide by 2

lastly, divide each side by 2. you will get x=3

Answer:

That is the third one ：

456.222

because it has the most numbers 4,5,6 and point . 2,2,2

The probability that Max will get the job is 3/10 or 0.3.

To see why, we can use the fact that the sum of the probabilities of all possible outcomes is equal to 1. Let A, B, and C represent the events that the first, second, and third companies respectively get the job.

Then the probability that Max gets the job is equal to the probability of event AB~C (i.e., none of the other companies gets the job).

The probability of A is 1/5, the probability of B is 1/2, and the probability of C is 3/10 (since the sum of the probabilities of all three events is 1). Using the formula for the probability of the intersection of independent events, we have:

P(AB~C) = P(~A) * P(~B) * P(~C) = (4/5) * (1/2) * (7/10) = 14/50 = 0.28

So the probability that Max gets the job is 0.3, or 3/10.

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Answer:

first tower needs 4

second needs 3

third needs 2

and the fourth needs 1

Total needed triangles for all is 10

Step-by-step explanation:

a) No, the expression 3g - 5 19/24 is not equivalent to Hiromi's expression that is 3g

b) The standard form of the expression is  3g - 5 19/24

Here we have given that Ms. Garcia asked her students to write the following expression in standard form and Hiromi wrote the following expression as 3g

Here we have given the expression as,

=> 5/6 + 4 (3/4g - 6)

When we simplify this one then we get,

=> 5/6 + 12/4g - 24

=> 3g + (5 - 144)/24

=> 3g - 139/24

When we convert the fraction, then we get,

=> 3g - 5 19/24

Then the given expression is not equivalent to the Hiromi's expression

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