Please help me?!
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Answer:

$181.9

Step-by-step explanation:

Si cuesta 85 dólares por 3 horas, queremos duplicarlo para obtener la cantidad por 6 horas, que es 170 dólares. Esto es antes del impuesto a las ventas. Puede encontrar la cantidad después del impuesto a las ventas multiplicando 170 por 1.07. Hace esto porque el 100 por ciento del costo sería 170 por 1 y el 7 por ciento es .07, por lo que si desea el 107 por ciento del costo, debe hacerlo 170 por 1.07. Esto funciona porque toma el 7 por ciento de 170 y lo agrega al costo total. También puede hacer esto 170 veces .07. Luego suma el producto a 170. 181,9 es la respuesta final.

English- If it costs 85 dollars for 3 hours we want to double that to get the amount for 6 hours which is 170 dollars. This is before sales tax. You can find the amount after sales tax by multiplying 170 by 1.07. You do this because 100 percent of the cost would be 170 times 1, and 7 percent is .07, so if you want 107 percent of the cost you want to do 170 times 1.07. This works because it takes 7 percent of 170 and adds it to the total cost. You could also do this by 170 times .07. Then add the product to 170. 181.9 is the final answer.

Answer:

C. (2x – 3)(x + 5) = 0

Step-by-step explanation:

The equation in standard form should be 2x^2 + 7x - 15 = 0

Factored the expression is (2x - 3)(x + 5).

In order to find the factored portion, you must look for factors of the front number (2) to use in the front of the parenthesis and factors of the last number (-15) to go in the end.  

When we use the ones that we have above, it distributes to the overall end result.  

(2x - 3)(x + 5)

2x^2 - 3x + 10x - 15

2x^2 + 7x - 15

The answer is B. Hope this helps

Answer:

It's C. " Which"

Step-by-step explanation:

The five Ws are Who, What, When, Where, and Why, not Which.

Answer:

(Some textbooks describe a proportional relationship by saying that " y varies proportionally with x " or that " y is directly proportional to x .") This means that as x increases, y increases and as x decreases, y decreases-and that the ratio between them always stays the same.

Step-by-step explanation:

google

and I know that the second one is the answer I dont know the others

The radius of the pool is changing at a rate of 3 / (20π) cm/min when the radius is 10 cm.

To solve this problem, we'll use the given information and the area formula for a circle.
Write the formula for the area of a circle:

\(A = \pi r^2\),

where A is the area and r is the radius.
Differentiate both sides of the equation with respect to time (t): \(dA/dt = d(\pi r^2)/dt.\)
Apply the chain rule on the right side: \(dA/dt = 2\pi r(dr/dt),\)

where dr/dt is the rate of change of the radius.
Plug in the given values:

dA/dt = 3 cm²/min (given) and r = 10 cm (given at the moment of interest).
Solve for dr/dt:
3 = 2π(10)(dr/dt).

Isolate dr/dt:
dr/dt = 3 / (20π)
Simplify:
dr/dt = 1 / (20π/3) = 3 / (20π).

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The observed allele frequencies for the T102C locus are as follows: T allele frequency = 0.388 and C allele frequency = 0.612.


To calculate the observed allele frequencies, we divide the number of occurrences of each allele by the total number of alleles observed.

In this case, the T allele is observed in 108 TT genotypes and 194 TC genotypes, giving a total of 108 + 194 = 302 T alleles. Similarly, the C allele is observed in 194 TC genotypes and 48 CC genotypes, giving a total of 194 + 48 = 242 C alleles.

To calculate the T allele frequency, we divide the number of T alleles by the total number of alleles: 302 T alleles / (302 T alleles + 242 C alleles) = 0.388 (or approximately 0.39).

Similarly, the C allele frequency is calculated as: 242 C alleles / (302 T alleles + 242 C alleles) = 0.612 (or approximately 0.61).

Therefore, the observed allele frequencies for the T102C locus are T allele frequency = 0.388 and C allele frequency = 0.612.

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Answer:

mostly to measure interest rates

Answer:

y = 15

x = 43

Step-by-step explanation:

x + y = 48

x - 2y = 3

3y = 45

y = 15

x + y = 48

x + 15 = 48

x = 43

Answer:

x=69

Step-by-step explanation:

15/100=x/460

=>100x=15×460 (cross multiplication)

=>100x=6900

x=69 (divide both side by 100)

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To integrate the function f(x, y) = (x + y + 3)^-2 over the given triangle with vertices (0,0), (4,0), and (0,8), we can set up the integral using symbolic notation and fractions.

The integral can be written as ∫∫R (x + y + 3)^-2 dA, where R represents the region of integration.

To evaluate this integral, we need to determine the limits of integration for x and y based on the triangle's vertices. Since the triangle is defined by the points (0,0), (4,0), and (0,8), we can set the limits as follows:

For x: 0 ≤ x ≤ 4

For y: 0 ≤ y ≤ 8 - (2/4)x

Now, we can rewrite the integral as ∫[0,4]∫[0,8-(2/4)x] (x + y + 3)^-2 dy dx.

Evaluating this integral will yield the exact value of the integral over the given triangle region.

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Answer:

that the greatest common factor of 24 and 32

Answer:

24 and 32

Step-by-step explanation:

DNE in each coordinate of the ordered triplet are y is -7 , DNE ,y is-2.

1.) 2+3 = y + 12

Make y the formula's subject after adding the LHS.

5 = y + 12

Y = 5 - 12

Y = - 7

The answer to the equation is -7

2.) 2 + 13 = 1 +8

The equation cannot have a solution since there is no unknown variable and the sum of the numbers on the left hand side (LHS) does not equal the sum of the numbers on the right hand side (RHS).

3.) y - 7 = 2 - 11

RHS is added, and y is become the formula's subject.

Y - 7 = -9

Y = -9 + 7

Y = -2

The equation's answer is -2.

The complete question is:Solve the following system of equations. If there is no solution, write DNE in each coordinate of theordered triplet. If there are an infinite number of solution, write each coordinate in terms of z.2+3 = y + 12

2 + 13 = 1 +8

y - 7 = 2 - 11

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Equilateral triangles are triangles whose all sides and angles are equal.

Since the above given triangle has 3 equal sides it is an equilateral triangle.

So, the three angles of this triangle can be 3x.

Which means :

\( =\tt 3x = 180\)

\( =\tt x = \frac{180}{3} \)

\(\hookrightarrow \tt \color{plum}x = 60°\)

▪︎Therefore, x = 60°

Answer:

3

Step-by-step explanation:

First step: Find the slope, Using the Formula y2 - y1 / x2 - x1 =  

6-4=2  3-1=2 then u divde the y/x   2/2=1 So the slope is 1.

Step 2: Use the Slope- Intercept formula, Y=mx+b so 4 = 1(1)+b so 4 = 1 + b

Step 3: subtract 1 on both sides so 4-1=3 1-1=0  so 3 is the Y-Intercept.

Answer:

number 1 matches 8/12, number 2 matches 11/12, number 3 matches 12/24, number 4 matches 11/24, number 5 matches 10/12

Step-by-step explanation:

find the minimum common multiple and then add the top numbers and keep the denominator (bottom number) the same.

The number of times that a hiker walks over 8 miles each day is a discrete random variable due to its countable and distinct nature.

The number of times that a hiker walks over 8 miles each day is a discrete random variable.

A random variable is a variable that can take on different values based on the outcome of a random event.

Discrete random variables are those that can only take on distinct, separate values with gaps between them.

In this case, the number of times a hiker walks over 8 miles each day can only assume specific values, such as 0, 1, 2, 3, and so on, representing the count of occurrences.

The variable cannot take on fractional or continuous values.

The concept of "walking over 8 miles" creates distinct categories or counts rather than a continuous range of values.

For example, the hiker may walk over 8 miles 0 times, 1 time, 2 times, etc., but there is no possibility of walking, for instance, 1.5 times over 8 miles in a day.

In contrast, continuous random variables can take on any value within a range, often representing measurements along a continuum. Examples of continuous random variables include height, weight, time, and temperature, where values can be any real number within a specified interval.

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The probability of getting exactly 2 eggs of each color can be calculated using the concept of combinations and probabilities. Let's break down the problem into steps:

Step 1: Calculate the total number of possible outcomes.

Since we have a sample of 6 eggs and there are 30 eggs in total, the number of possible outcomes is given by the combination formula:

Total Outcomes = C(30, 6) = 30! / (6! * (30-6)!)

Step 2: Calculate the number of favorable outcomes.

To get exactly 2 eggs of each color, we need to choose 2 white eggs, 2 brown eggs, and 2 green eggs. The number of favorable outcomes can be calculated as follows:

Favorable Outcomes = C(12, 2) * C(10, 2) * C(8, 2)

Step 3: Calculate the probability.

The probability of getting exactly 2 eggs of each color is the ratio of the number of favorable outcomes to the total number of possible outcomes:

Probability = Favorable Outcomes / Total Outcomes

In Step 1, we use the combination formula to calculate the total number of possible outcomes. The combination formula, denoted as C(n, r), calculates the number of ways to choose r items from a set of n items without considering the order.

In Step 2, we use the combination formula to calculate the number of favorable outcomes. We choose 2 white eggs from a total of 12 white eggs, 2 brown eggs from a total of 10 brown eggs, and 2 green eggs from a total of 8 green eggs.

Finally, in Step 3, we divide the number of favorable outcomes by the total number of possible outcomes to obtain the probability of getting exactly 2 eggs of each color. This probability represents the likelihood of randomly selecting 2 white, 2 brown, and 2 green eggs from the given carton of 30 eggs when taking a sample of 6 eggs.

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To investigate whether there is convincing evidence, at a 5 percent level of significance, that a longer hand length is associated with a decrease in the time to complete the 100-meter freestyle, the researcher should use a linear regression t-test.

1. The researcher collects data on hand length and 100-meter freestyle completion time for twenty randomly selected swimmers.
2. Calculate the correlation coefficient (r) to measure the strength and direction of the relationship between hand length and freestyle completion time.
3. Perform a linear regression analysis to obtain the slope (b) and the y-intercept (a) of the best-fit line.
4. Conduct a linear regression t-test to determine if the slope (b) is significantly different from zero at a 5 percent level of significance.
5. If the t-test results in a p-value less than 0.05 (5 percent level of significance), there is convincing evidence that a longer hand length is associated with a decrease in the time to complete the 100-meter freestyle.

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Answer:

3 and 9

Step-by-step explanation:

let,the ratio be 3x and 1x

3x+1x=12

4x=12

x=12/4

x=3

3x=3*3=9

x=3

Hence,the ratio are 3 and 9

Answer: Refer to figure 1 for the diagram needed.

A ' = (-1, 2)

B ' = (-6, 1)

C ' = (-7, 6)

D ' = (-3, 7)

Area = 24 square units

============================================================

Explanation:

Start by drawing an xy axis. Plot the given points A,B,C,D on this grid.

To reflect any given point over the y axis, we apply this rule

\((x,y) \to (-x,y)\)

which means we change the sign of the x coordinate, but keep the y coordinate the same. For example, a point like A(1,2) moves to A ' (-1,2). The other points are handled in a similar fashion.

After all of the points have been reflected, you'll get what is shown in figure 1.

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

To find the area of quadrilateral ABCD, we can form a bounding box as small as possible around the quadrilateral. Refer to figure 2.

The area of rectangle FEHG is 6*6 = 36 square units

Then we subtract off the areas of these four outer triangles

Meaning we'll end up with 36-5-2.5-2.5-2 = 24 as the area of quadrilateral ABCD. Because a reflection is a mirror copy, quadrilateral A'B'C'D' will have the same area as ABCD.

Answer:

acute iscoceles

Step-by-step explanation:

cuz obtuse is 90 or more right is 90 acute is less than 90

Answer:

7 rides

Step-by-step explanation:

Entry Fee = $3.60

Cost per ride = $1.50

$15 - $3.60 = $11.40

$11.40 ÷ $1.50 = 7.6 rides

Ans. = 7 rides

Therefore, Heather can only ride 7 rides leaving her with $0.90¢ change.

The total cost before the sales tax was 19.828 pounds.

For a party, Jordan purchased 3.8 pounds of turkey, 2.2 pounds of cheese, and 3.6 pounds of egg salad.

We have to determine the total cost before sales tax.

As per the question, we have prices as:

cost of turkey = 3.95 per pound

cost of egg cheese = 1.3 per pound

cost of egg salad = 0.89 per pound

The total cost of turkey = 3.8 × 3.95  = 15.01 pounds

The total cost of cheese = 2.2 × 1.3 = 2.86 pounds

The total cost of egg salad = 2.2 × 0.89 = 1.958 pounds

The total cost before sales tax = 15.01 + 1.958 +2.86

Apply the addition operation, and we get

The total cost before sales tax = 19.828 pounds

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The question seems to be incomplete the correct question would be:

Jordan bought 3.8 pounds of turkey, 2.2 pounds of cheese, and 3.6 pounds of egg salad for a party. If prices are 3.95 per pound turkey, 1.3 per pound cheese and 0.89 per pound egg salad What was the total cost before sales tax?

Answer:

Answer b = $ 2.25 dollars

             s = $ 1.75 dollars

Please see how to do, it is good to know the answers but if you know how to solve it thats even better!!

Step-by-step explanation:

Let : s = soft tacos

       b = burritos

Step 1: 11.50 = 4s + 2b

           12.00 = 3s +3b

Step 2: Solve using subtraction

12 =3s + 3b

-1 (11.50 = 4s + 2b)  _ times by -1 so you can subtract

-11.50 = -4s -2b      _ once you do this bring the other equation

12.00 = 3s + 3b      _ then subtract/ add

_____________+__

0.50 = -s + b          _ add s to both sides

s + 0.50 = b             _ now you can plug in b into the original equation

12.00 = 3s + 3(s + 0.50)   _distribute the 3 to the s and 0.50

12.00 = 3s + 3s + 1.5          _ add like terms

12.00 = 6s + 1.5                  _ - 1.5 on both sides

-1.5               -1.5

10.5 = 6s                  _ divide by 6 to isolate s

1.75 = s                         _ plug it in to find b

11.5 = 4(1.75) +2b

11.5 = 7 + 2b    _ subtract 7 on both sides

4.5 = 2b         _ divide by 2 on both sides

2.25 = b

Answer b = $ 2.25 dollars

             s = $ 1.75 dollars

Answer:

The half life of a radioactive substance is 10 days. If you start with 50 grams of the substance, how many grams will be left after 30 days?

First point. Your question is worded fine. As usual, there are folks answering this question saying that “radioactive decay doesn’t reduce mass”. PFUI folks. When an atom decays, it becomes ANOTHER element. THEREFORE, if you started with 50 grams of substance X, after decay you have LESS mass of substance X.

Second point. There is an “easy” way to do this problem, and you got several answers about that. (first half life you drop to 25 gm. Second half life you drop to 12.5 gm. Third half life, and you have 6.25 gm. You can do this one on your fingers.

Now. There is a “hard” way, but it allows you

If you had 16 grams of an element with a half life of 15 minutes would you have 1 gram of mass left after an hour or would its radioactivity only be 1/16th?

Its mass would remain virtually unchanged (diminished very slightly by radiation), but only 1/16 of that mass would still be the original isotope; 15/16 of that mass would now be the daughter isotope (or a granddaughter isotope, or some other descendant, depending on the daughter isotopes' half-lives), which may be either more or less radioactive than the original isotope in question.

The half-life of a certain radioactive element is 35 hours. If there are 904 grams of this element, how much will be left after 70 hours?

If we do your homework for you, you won’t learn anything.

This is a simple problem. Think it through. 35 hours is the half-life so after 35 hours how much is left of the 904g?

Answer: The answer is D.

Step-by-step explanation: In one hour they went 70 miles, and in the next two they went 55 miles. So to find the answer you simply find the average of 70, 55, and 55 which comes out to be 60.

Answer:

-311

Step-by-step explanation: