Chan Hee bought 3.4 pounds of coffee that cost $6.95 per pound. How much money did he spend on coffee?

Answer:

The cashier should refund back to the customer $5,04

Step-by-step explanation:

The cashier has to refund the amount the customer paid, which was the price plus the proportional tax.

Refund=price+tax

Price=$4.80

Tax=$4.80 * 0,05= $0,24

Refund=$4.80 +$0,24=$5,04

Final answer:

To calculate the requested expression, multiply 15 by 7 to get 105, and then add 8 to this product to find the sum, which is 113.

Explanation:

The question asks to calculate the result of the mathematical expression where a product is first found by multiplying 15 and 7 and then that product is added to 8. To solve this, you need to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

First, calculate the product of 15 and 7 to get 105.

Next, add this product to 8 to find the final result.

So, 105 + 8 equals 113.

The correct answer to the question is 113, which is the sum of the product of 15 and 7, with 8 added.

A runner must run for 50 minutes to cover the distance of 10 kilometers.

Speed is defined as when an object is in motion, the distance covered by that object per unit of time is called speed.

here,
A runner wants to run 10.0 km. she knows that her running pace is 7.5 miles per hour.

7.5 miles = 12 kilometers
Speed = 12 kilometers/hours
1 hour = 60 minutes

Speed = 12 / 60 kilometers per minute
Speed = 0.2 kilometers per minute

Time = distance/speed
Time = 10 / 0.2
Time = 50 minutes

Thus, A runner must run for 50 minutes to cover the distance of 10 kilometers.

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Answer:

m = [tex]\frac{4}{3}[/tex]g, k= 9[tex]\frac{1}{3}[/tex] months

Step-by-step explanation:

The annual growth rate is 41.4% and the monthly growth rate is 3.45%. The continuous growth rate per year is 2.77%.

To determine the annual growth rate, we need to find the growth factor by taking the square root of the doubling factor. Since the population is predicted to double every 25 years, the annual growth rate would be the square root of 2, which is approximately 1.414. To express it as a percentage, we can subtract 1 from the growth factor and multiply by 100, resulting in an annual growth rate of 41.4%.

The monthly growth rate can be calculated by dividing the annual growth rate by 12. In this case, the monthly growth rate would be approximately 3.45%.

To determine the continuous growth rate per year, we use the formula: r = ln(2)/t, where r is the continuous growth rate and t is the doubling time in years. In this case, the continuous growth rate would be ln(2)/25, which is approximately 0.0277. Multiplying this by 100, we get a continuous growth rate per year of 2.77%.

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a coin has a 1/2 probability of landing on heads

 so it should land on heads 1/2 of the time

1/2 of 200 = 100

Final answer:

With a fair coin, theoretical probability suggests that Jo should expect to land on heads roughly 100 times out of 200 flips. Actual results may vary slightly due to random chance, but should approximate 50 percent heads over a large number of trials.

Explanation:

If Jo is flipping a fair coin, on average, we would expect the coin to land on heads 100 times out of 200 flips. This expectation is based on the theoretical probability of getting heads, which is 0.5 or 50% for a fair coin. Therefore, if Jo flips the coin 200 times, the expected number of heads is calculated by multiplying the total number of flips by the probability of getting heads (0.5), which is 200 * 0.5 = 100.

However, it's important to note that while the theoretical probability suggests that Jo should get heads approximately 100 times, the actual result might be slightly more or slightly less due to random chance. The larger the number of flips, the closer the actual results are likely to get to the expected 50 percent heads, as demonstrated by the law of large numbers. But for any finite number of flips, there is always potential for some variation from the expected value.

there are 6 sides to a cube

2 are 4*6 = 24*2 =48

2 are 4*2 = 8*2 = 16

2 are 6*2 = 12*2 =24

48 +16 +24 = 88 square inches total

Click the third graph (check the picture attached)

Remember that [tex]speed=\frac{distance}{time}[/tex], so the line in the first part of the graph means that the man is driving his car at certain speed (different form zero) from home to the store. The horizontal graph in the middle of the graph means that he man is sopping at the store; therefore his driving speed is 0. The third part of the graph means that the man is driving again from the store to home.

Check the picture bellow to visualize it more easily.

Final answer:

The correct expression to calculate the remaining budget for food after spending on groceries and meals out is 550 - (67.19 + 55x), which is option A.

Explanation:

The question asks us to determine which expression correctly represents the amount of money left in the budget for food after the family has spent money on groceries and consumed their meals. The original budget for food is $550, and the family spent $67.19 on drinks and snacks. Each meal they plan to eat out is budgeted at $55. Let's denote the number of meals the family will eat out as 'x'.

To calculate the remaining budget after these expenses, we subtract the cost of groceries and the total cost of eating out (which is $55 times the number of meals 'x'), from the original budget for food. The correct mathematical expression for the remaining budget is:

550 - (67.19 + 55x)

This expression is represented by option A. This correctly factors in the initial expenditure on groceries of $67.19 and then subtracts $55 for each meal 'x' from the remaining budget.

Answer: The answer is (c) One plane can be drawn so that it contains all three points.

Step-by-step explanation:  We are given three points R, S and T in a coordinate plane. Considering all these three points to be distinct and non-collinear, we can draw the following conclusions.

(i) Since each pairs of points. i.e., (R,S), (S,T) and (T,R) give rise to a straight line when joined, so option (a) is incorrect.

(ii) Through any two given points, we can always draw a line. If we consider a third point and since we are dealing with non-collinear points, so one line cannot be drawn through three points.

(iii)We can always draw a line by joining two points and when we join the two ends of the line to a third point which does not lie on the line, it will give rise to a plane. So, option (c) is correct.

(iv) We cannot draw two different planes through three given points. If we do so, the new plane will coincide with the previous one. This proves that option (d) is not correct.

Please see the attached figure, where P, Q and R are three non-collinear points. They give rise to a plane.

Thus, the correct option is (c).

Answer:

Step-by-step explanation:

Alright, lets get started.

The function that models the height of the ball is given by :

[tex]f(x)=-10x^2+20x+8[/tex]

When we plug x as 1.5 , we could get the height f(1.5) as :

[tex]f(1.5)=-10(1.5)^2 +20*1.5 +8[/tex]

[tex]f(1.5)=-22.5+30+8[/tex]

[tex]f(1.5)=15.5[/tex]

So the height of the ball after 1.5 second is 15.5 meters.   : Answer

Hope it will help :)

Answer:

It is c on edge just took the test

Step-by-step explanation:

Christian can calculate his total earnings over 2 weeks by simplifying the expression x + 10 + x + 10 to 2(x + 10). This method combines his earnings from fixing bicycles and his allowance for each week. Therefore, the correct answer is D. 2(x + 10).

To calculate how much Christian will earn in total over 2 weeks, you can simplify the expression x + 10 + x + 10:

Rewriting this, you get 2(x + 10). Therefore, the correct answer is D. 2(x + 10).

Final answer:

The possible values of k in the factorable quadratic expression x^2 + kx + 18 can be determined by finding the factors of 18 that can be multiplied to obtain the constant term.

Explanation:

If the quadratic expression x^2 + kx + 18 is factorable, the possible values of k can be determined by finding the factors of 18 that can be multiplied to obtain the constant term.

The factors of 18 are:

1 and 18

2 and 9

3 and 6

Therefore, the possible values of k are -19, -10, -3, 3, 10, and 19.

180 = 93 +3x +18

180 =111 +3x

3x = 180-111

3x = 69

x = 69/3

x = 23

The length of Mr. Webster's exercise room is 18.4 feet, calculated by dividing the area (230 sq ft) by the width (12.5 ft).

To find the length of the room, we can use the formula for the area of a rectangle:

[tex]\[ \text{Area} = \text{Length} \times \text{Width} \][/tex]

Given that the area is 230 square feet and the width is 12 1/2 feet, we can plug these values into the formula:

[tex]\[ 230 = \text{Length} \times 12 \frac{1}{2} \][/tex]

To solve for the length, divide both sides by 12.5:

[tex]\[ \text{Length} = \frac{230}{12 \frac{1}{2}} \]\[ \text{Length} = \frac{230}{\frac{25}{2}} \]\[ \text{Length} = 230 \times \frac{2}{25} \]\[ \text{Length} = 18.4 \][/tex]

So, the length of the room is [tex]\( \boxed{18.4} \)[/tex] feet.

The lower bound estimate and upper bound estimate are found by rounding 764 to 700 and 241 to 200, then subtracting to get 500. However, the mistake in the options seems that both the lower and upper bound estimates are 500. Based on the given options, the right answer should be option C with lower bound 500 and upper bound 600, albeit the upper bound estimate is not correctly represented.

The lower bound and upper bound estimate of a calculation are found by rounding each number involved to the greatest place value then performing the calculation. In the case of the subtraction 764 - 241, the lower bound estimate will be calculated by underestimating both figures, and the upper bound will be calculated by overestimating.

Therefore, both the lower bound estimate and the upper bound estimate are 500 and the correct option is C. lower bound 500 upper bound 600

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