Marissa's mom purchased coffee from the local coffee shop. The first cup of coffee was $2.95. Each refill is $1.50. She also decided to get a bagel for $2.75. If Marissa's mom had 2 refills and a $0.50 discount as part of the rewards program, how much did she spend at the coffee shop?

$7.20
$7.45
$8.20
$9.45

Answer:

[tex]h=\pm 21[/tex]

Step-by-step explanation:

[tex]h^2=441 \implies h=\pm \sqrt{441}=\pm 21[/tex]

The amount of power y the solar panel can produce is linearly proportional to the size of x, the equation is y = 1200x, and the graph is attached below.

A graph is a structure made up of a collection of things, where some object pairs are conceptually "connected." The items are represented by mathematical abstractions known as vertices, and each pair of connected vertices is referred to as an edge.

Given data:

A certain model of a solar panel produces 1,200 KW of power for an area of one square meter,2,400 KW of power for an area of two square meters, and 3,600 KW of power for three square meters,

As you can see from the above, the power is linearly dependent on the area, and it can be seen by the following equation,

y = 1200x

Here, y = power and x = area,

Therefore, the amount of power y the solar panel can produce is linearly proportional to the size of x, the equation is y = 1200x, and the graph is attached below.

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The situation that is best described by the situation is that D. The temperature at 2:00 am is -2 degrees celsius and drops 2 degrees each hour for x hours.

An equation is the statement that illustrates the variables given. In this case, two or more components are taken into consideration to describe the scenario. It is vital to note that an equation is a mathematical statement which is made up of two expressions that are connected by an equal sign.

In this case, the equation is given as:

y = 2x - 2.

This illustrates that the temperature at 2:00 am is -2 degrees celsius and drops 2 degrees each hour for x hours.

In conclusion, the correct option is D.

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Answer:

Step-by-step explanation: Can u show the picture of the table so i can understand this better

The value of n in the given equation is 1.

Define Algebraic Expression

In mathematics, an expression that includes variables, constants, and algebraic operations is known as an algebraic expression (addition, subtraction, etc.)

Given equation,

-1/2 (2n + 4) + 6 = -9 + 4(2n + 1)

Now, solve for n

first, solve the brackets

-1/2 * 2n + (-1/2) * 4 + 6 = -9 + 4*2n + 4 * 1

-n - 2 + 6 = -9 + 8n + 4

Solve the constants on both the sides,

-n + 4 = 8n - 5

Now, take out n value one side and constant terms other side

-n - 8n = -5 - 4

-9n = -9

Cancel out -9 from both the sides,

n = 1

Hence, the value of n in the given equation is 1.

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The z score that has 70.54% of the distribution area is 9.92

The z-score is a numerical measurement used in statistics to refer to how much a given value differs from the standard deviation.

For the random variable x, the z-score is;

z = (x - 11)/2

therefore, 70.54% of the area under the curve lies to the right of x,

then the area to the left of x is;

100 - 70.54 = 29.46%

From the standard table, a z-score of -0.54 will yield an area of 29.46% to the left of x.

Therefore, we get;

(x - 11)/2 = -0.54

x - 11 = -0.54(2)

x = 9.92

The z score  is 9.92

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Answer:

148 cm²

Step-by-step explanation:

Using the formula for the total surface area of a cuboid,

[tex]2(6 \times 4+6 \times 5+4 \times 5)=148[/tex]

Answer:

31

Step-by-step explanation:

Answer:

35 and 1/4

Step-by-step explanation:

6x47/8

6/1x47/8

282/8

35 1/4 or 35.25

Answer: 5, 12, 13

Step-by-step explanation:

the first one

THE FORMULA

a^2 + b^2 = c^2

5^2 + 12^2 = 13^2

5^2 = 25

12^2 = 144

13^2 = 169

IS IT CORRECT???

yes

169-144=25!

The slope of the line in the graph is 2/3.

A line's slope is defined as

Slope = Rise / Run

Can also be written as,

slope(m) = y2 - y1 / x2 - x1

Choose any two points on the line, such as A and B.

It is clear from the graph below that

Rise = y Change = -3-(-1) = -2

Run = x Change = 1 - 4 = -3

In the above formula, substitute these values.

Slope = -2 / -3

          = 2/3

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Answer:

6x-3=15

Step-by-step explanation:

The complete table of values of the equation y = 3x + 5 is

x = -2, -1, 0, 1 2

y = -1  2  5   8  11

The complete question is added at the end of this solution

From the question, we have the following equation that can be used in our computation:

y = 3x + 5

From the table of values added at the end of this question, we have the following x values

x = -2, -1, 0, 1 and 2

Substitute x = -2, -1, 0, 1 and 2 in y = 3x + 5

So, we have the following representation

y = 3(-2) + 5 = -1

y = 3(-1) + 5 = 2

y = 3(0) + 5 = 5

y = 3(1) + 5 = 8

y = 3(2) + 5 = 11

So, the complete table of values is

x = -2, -1, 0, 1 2

y = -1  2  5   8  11

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Answer: z=34 degrees

Step-by-step explanation:

the total angle of a triangle always adds up to 180

180=44+2z+2z

combine like terms

4z+44=180

4z+44-44=180-44

4z=136

z=34

Since -153/4 + 4i is equivalent to -63/4 + 4i, we should multiply D) –153∕4 + 4i to complex numbers (1∕2 + 4i)².

Complex numbers are those that are expressed as a+ib, where a and b are actual numbers and I is a fictitious number called a "iota." I has the value (-1). As an illustration, the complex number 2+3i is made up of the real number 2 (Re) and the imaginary number 3i (Im). In the case of quadratic equations, the unknown roots are simplified using complex numbers if the roots are not real. In computer science and engineering, complex numbers are used. Both mechanical and civil engineering use complex numbers. Control systems employ complex numbers.

Given,

Complex numbers:;

(1/2 + 4i)²

(a +b )² = a² + b² + 2ab

Multiplying,

(1/2)² + (4i)² + 2(1/2)(4i)

1/4 + 16i² + 4i

i² = -1

1 - 64/4 + 4i

-63/4 + 4i

Since -153/4 + 4i is equivalent to -63/4 + 4i, we should multiply D) –153∕4 + 4i to (1∕2 + 4i)².

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Answer:

17

Step-by-step explanation:

13 + 4 = 17

The full price when the sales price is ;

£32.24 = £96.72

£86.08 is  £258.24

£105.48 is £316.44

£230.62 is £691.86

The sales price is one third of the full price of the items. Thus, in order to determine the full price, multiply the sales price by 3.

Full price = sales price x 3

Full price when the sales price is £32.24 would be;

= 3 x £32.24

= £96.72

Full price when the sales price is £86.08  would be;

= 3 x £86.08 = £258.24

Full price when the sales price is £105.48 would be;

= 3 x £105.48 = £316.44

Full price when the sales price is £230.62  would be;

= 3 x £230.62 = £691.86

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Answer:

15

Step-by-step explanation:

The length of the side a is 112.1664 cm.

The ratios of a triangle's side lengths to each of its opposite angles are related by the law of sines. There is no change in this ratio for the three sides or the opposing angles.

The Law of sines;

Sin A / a = Sin B / b = Sin C/ c

Here, we have two angles 35° and 25° and a side b = 5 ft

Now, sin35°/5 = sin25°/a

a = (0.42) x 5 / (0.57)

a = 3.68

Now the length in feet is 3.68 cm.

Therefore, the length of the side a is 112.1664 cm.

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Answer:

12 Pieces left!

Step-by-step explanation:

Because, Look. 6 is 1 quarter, He gave some of his other friends less.

If you add 2 + 4, thats 6! 6 is 1 quarter. There is 4 quarters in a cake. SO 6 + 6 12, thats half of a quarter. And then he gets the other half! Good luck!

(24 pieces in his cake)

Answer:

-4

Step-by-step explanation:

So we have f(x) = x + 1 and g(x) = 5x. We need to find f(g(x))(-1). So let's put g(x) into f(x): f(g(x)) = f(5x) = 5x + 1. Now we have x = -1. Let's substitute this into 5x + 1 = -5 + 1 = -4.

Answer: The distributive property

Step-by-step explanation: The distributive property ALWAYS has 1 number that is outside the parentheses. I know you didn't ask for this, but you can use the distributive property to write an equivalent expression by multiplying (or distributing) the 13 by every # inside the parentheses, so your new equation would look like 260 x 65. I hoped this explanation and example help you understand now.

4x is 25 percent of 16x.

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Let the percentage be P.

Now,

P% of 16x = 4x

P/100 x 16x = 4x

P/100 = 4x/16x

P/100 = 1/4

P = 100/4

P = 25

This means,

25% of 16x is 4x.

We can cross-check.

= 25% of 16x

= 1/4 x 16x

= 4x

Thus,

25 percent of 16x is 4x.

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Approximately 95% of men must duck when walking through a door that is 72 inches high. Approximately 5% of women must duck when walking through the door. The door height that would allow at least 95% of men to walk through the door without ducking is 74 inches.

The mean height of men is 69.0 inches and the standard deviation is 2.8 inches, while the mean height of women is 63.6 inches and the standard deviation is 2.5 inches.

(a) To find the percentage of men who must duck when walking through a door that is 72 inches high, we first need to find the percentage of men whose height is less than 72 inches.

The height of the door is 72 inches, which is 3 inches above the mean height of men.

Since the standard deviation is 2.8 inches, this means that approximately 95% of men are within 2.8 * 2 = 5.6 inches of the mean height.

Therefore, approximately 95% of men are between 69.0 - 5.6 = 63.4 inches and 69.0 + 5.6 = 74.6 inches tall.

If the height of the door is 72 inches, approximately 95% of men must duck when walking through the door.

(b) To find the percentage of women who must duck when walking through a door that is 70 inches high, we first need to find the percentage of women whose height is less than 70 inches.

The height of the door is 70 inches, which is 6.4 inches above the mean height of women.

Since the standard deviation is 2.5 inches, this means that approximately 95% of women are within 2.5 * 2 = 5 inches of the mean height. Therefore, approximately 95% of women are between 63.6 - 5 = 58.6 inches and 63.6 + 5 = 68.6 inches tall.

If the height of the door is 70 inches, approximately 5% of women must duck when walking through the door.

(c) To find the door height that would allow at least 95% of men to walk through the door without ducking, we need to find the height that is within 2 standard deviations of the mean height of men.

Since the standard deviation is 2.8 inches, this means that approximately 95% of men are within 2.8 * 2 = 5.6 inches of the mean height.

Therefore, the door height that would allow at least 95% of men to walk through the door without ducking is 69.0 + 5.6 = 74

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Answer:

-13

Step-by-step explanation:

The ys can combine and so can the numbers so if you take -5y + 5y you get 0. so those completely cancel out, so then you would add -12 + -1 which is -13.

The equivalent linear equation to the line 3x + 4y = 15 is the one in the first option:

y = (15 - 3x)/4

Here we have the following linear equation:

3x + 4y = 15

And we want to find an equivalent linear equation where y is isolated in the left side of the equation. So let's isolate the variable.

If we subtract 3x in both sides of the linear equation we will get:

3x + 4y - 3x = 15 - 3x

4y = 15 - 3x

Now we can divide both sides by 4, so we will get:

4y/4 = (15 - 3x)/4

y = (15 - 3x)/4

This is the equation in option 1, so we conclude that the correct option is the first one.

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The strategic decision based on the p-value is given as follows:

Allow the machine to continue operating as it is.

The decision depends if we reject or do not reject the null hypothesis in this problem, as follows:

The decision rule to accept or reject the null hypothesis is given as follows:

The p-value in this problem is given as follows:

0.06811.

Which is greater than the significance level, hence the null hypothesis is not rejected and the first option is correct, as the machine should be allowed to continue operating as it is.

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