Nelson went grocery shopping. He spent $199.89. If the sales tax is 3.5%, what is the amount of tax that Nelson must pay?

-185/100 = -1.85

a) -1.08 this number id greater than -1.85

b) 190/100 = 1.9 this number is greater than -1.85

c) -35/20 = -1.75 this number is greater than -1.85

All these numbers are greater than -185/100

The statement that is not true concerning PivotTables in Excel is b. PivotTables summarize data for two variables. PivotTables can summarize data for multiple variables, not just two.

PivotTables allow you to analyze and summarize data from various perspectives, including multiple variables, by grouping, filtering, and calculating values based on different criteria. They provide flexibility in summarizing and organizing data in a tabular format, making it easier to extract insights and perform data analysis efficiently.

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Answer:

third option both cost the same after 2 months

Answer:

The slope is -3/7 so B

Step-by-step explanation:

Just turn this into slope-intercept form.

what you do is subtract 3x so that it's moved to the right side.

It should look like this -7y = 12 - 3x

Then just divide all numbers by 7 so everything is simplified

It should look like this y = -3/7x - 12/7

pls mark brainliest because i didn't waste you time lol

Answer:

x=17 degrees

Step-by-step explanation:

All 3 angles = 180 degrees

So 90 + 54 + (x+19) = 180

Combine like terms

163 + x = 180

Subtract 163 from both sides

x = 180-163

x = 17

b

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Answer:

A

Step-by-step explanation:

im pretty sure

Answer: 101/20, 5 1/11, 5.57, 5.576

Step-by-step explanation:

I hope this is correct :D

The value for h(-1) is 4

The value for  h'(-1) is 1

Given the tangent line to the graph of y=h(x) at the point (-1,4) passes through (3,6), to get h(-1) and h'(-1), we should calculate the following:

Gradient of the tangent line:

Gradient=change in y axis/change in x axis=Δy/Δx

Using the x and y coordinates (-1,4) and (3,6)

Gradient=(6-4)/(3--1)

             =2/4

            =1/2

Gradient=1/2 or 0.5

Equation of the tangent line:

This should be in the form of y=mx+c, where m is the gradient of the line

We use the gradient and one of the x and y coordinates get the equation of the tangent line

Gradient=change in y axis/change in x axis=Δy/Δx, and gradient was found as 1/2

Δy/Δx=1/2

(y-4)/(x--1)=1/2

(y-4)/(x+1)=1/2

2y-8=x+1

y=(1/2)x+4.5

Equation of the tangent line is y=(1/2)x+4.5 or y=0.5x+4.5

And y=h(x)

So, h(x)=0.5x+4.5

Calculate h(-1), here x=-1:

h(x)=0.5x+4.5

h(-1)=(0.5*-1)+4.5

      =4

h(-1)=4

Calculate h'(-1), x=-1:

Here we get the derivative of the equation of the tangent line h(x)=0.5x+4.5,

h'(x)=0.5x^0+0

h'(-1)=1+0

h'(-1)=1

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(a) The coefficient of determination for the given regression line is 0.832. It can be interpreted as the fraction of the variation in sales that can be explained by the variation in total square footage. The remaining fraction of the variation, approximately 16.8%, is unexplained and can be attributed to other factors or sampling error.

(b) The standard error of estimate for the regression line is approximately 77.607 billion dollars. It can be interpreted as the average amount by which the predicted sales deviate from the actual sales. In other words, it represents the variability or scatter of the data points around the regression line.

(a) The coefficient of determination, denoted by R^2, is a measure of how well the regression line fits the data. It ranges between 0 and 1, where 0 indicates that the regression line explains none of the variation in the dependent variable (sales in this case), and 1 indicates a perfect fit where all the variation is explained. In this case, the coefficient of determination is 0.832, which means that approximately 83.2% of the variation in sales can be explained by the variation in total square footage.

(b) The standard error of estimate (SE) is a measure of the accuracy of the predicted values. It represents the average amount by which the predicted sales deviate from the actual sales. The standard error of estimate for this regression line is approximately 77.607 billion dollars, indicating that, on average, the predicted sales may deviate from the actual sales by around this amount.

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Step-by-step explanation:

I went through all of them and also checked what you did.

1. no, wrong. I don't know how you got to the 2×7 in there.

17 - 5×4/2 = 17 - 5×2 = 17 - 10 = 7

2. we just did in the other question. it is 26.

3. correct for the approach, but mistake in the final calculation : 28 + 64 = 92 !

4. (4-7)² - 6×7 + 20

how did you get to the 26 for -6×7 + 20 ?

no.

-3² - 42 + 20 = 9 - 42 + 20 = -13

5. 2×(18 - (5 + 3²)/7)

2×(18 - (5 + 9)/7) = 2×(18 - 14/7) = 2×(18 - 2) = 36 - 4 = 32

6. ((-5 + 1)/2)³ - |‐7|

that may part means "absolute value" of -7. and you know, that means 7.

(-4/2)³ - 7 = -2³ - 7 = -8 - 7 = -15

7. 1 + (-2 - 5)² + (14-17)×4

1 + -7² + -3×4 = 1 + 49 - 12 = 38

8. (6×(2+4) - 1) / (2×3 + 1)

(6×6 -1) / (6 + 1) = 35 / 7 = 5

9. (2⁵/8 + 3) / (4 + 3)

(32/8 + 3) / (7) = (4 + 3) / 7 = 7/7 = 1

10. (17×5 - 3×5) / (3² + 1)

(14×5) / (9 + 1) (as for same factors we can contract the expressions like 17×5 - 3×5 = 14×5)

70 / 10 = 7

11. (13 + 7²/7) / (9 - 20/4 - 16)

(13 + 49/7) / (9 - 5 - 16) = (13 + 7) / (-12) = 20/-12 = -5/3

12. - |-16| / ((3² - 4) / (5 - 10))

-16 / ((9-4) / (-5)) = -16 / (5/-5) = -16 / -1 = 16

The required maximum volume of the box is 2ft³.

Volume is a measurement of how much space an object takes up.

We can calculate the amount of something needed to fill it, like water for a bottle, tank, or aquarium.

Amount of space that stuff takes up - that's what we mean when we talk about volume.

Stuff is anything that has mass and takes up room.

When scientists are measuring volume, they usually use cubic meters.

So, calculate as:

V=x·y²

2x+y=3

y=3-2x

V = x·(3-2x)² = x·(9-12x+4x²) = 9x - 12x²+4x

V ` = 9-24x+12x² = 3(4x²-8x+3) = 3(4x²-6x-2x+3)

= 3[2x(2x-3)-(2x-3)] = 3(2x-3)(2x-1)

When the most amount is present: V ` = 0

Then,

2x-3 = 0  

2x = 3              

x = 1.5 (That's wrong, 'cause y = 0.)

or: 2x-1 = 0

2x = 1

x = 0.5,  y = 3 - 2 · 0.5 = 3 - 1 = 2

V max = 0.5 · 2² = 0.5 · 4 = 2 ft³

Therefore, the required maximum volume of the box is 2ft³.

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Please have a look at the diagrams of a quadrilateral and a trapezoid in your textbook.

Ans--- A trapezoid is a quadrilateral with exactly one pair of parallel sides.

Step-by-step explanation:

The answer is dhdt=325πmmin.

With related rates, we need a function to relate the 2 variables, in this case it is clearly volume and height. The formula is:

V=πr2h

There is radius in the formula, but in this problem, radius is constant so it is not a variable. We can substitute the value in:

V=π(5m)2h

Since the rate in this problem is time related, we need to implicitly differentiate wrt (with respect to) time:

dVdt=(25m2)πdhdt

In the problem, we are given 3m3min which is dVdt. So we substitute this in:

dhdt=3m3min(25m2)π=325πmmin

Answer:

The answer you're looking for is 1470.

Step-by-step explanation:

The method I used was PEMDAS

Since there was no parenthesis, I simplified the exponents.

2.130 x 10³ - 6.6 x 10² = ?
2.130 x 1000 - 6.6 x 100 = ?

After that, I multiplied all terms next to each other.

2.130 x 1000 - 6.6 x 100 = ?
2130 - 660 = ?

The final step I did was to subtract the two final terms and ended up with 1470 as my final answer.

1470 = ?

I hope this was helpful!

Answer:

$90,710.74

Step-by-step explanation:

Answer:

it's the 3rd one

Step-by-step explanation:

it's so easy

Answer:

She ran

\(6 \frac{3}{10} km \: or \: 6.3 \: km\)

Step-by-step explanation:

To find the answer you multiply the amount of races (9) by the length of each race (7/10 km).

\( \frac{7}{10} \times \frac{9}{1} = \frac{63}{10} \: or \: 6 \frac{3}{10} \)

The simplified form of the Boolean expression [a' + (yz)'][x+z'] is xz' + a'x + a'z'.

To simplify the given expression, we can use various properties of Boolean algebra such as the distributive law, complement law, and identity law.

Starting with the given expression, let's simplify it step by step:

1. Apply the distributive law:

[a' + (yz)'][x+z'] = a'x + a'z' + yzx + yzz'

2. Simplify using the complement law:

a'z' + yzz' = a'z' + 0 = a'z'

3. Simplify using the identity law:

az' + 0 = az'

4. Combine the simplified terms:

a'x + a'z' + yzx + a'z' = a'x + a'z' + yzx + az'

5. Apply the distributive law again:

a'x + a'z' + yzx + az' = (a'x + a'z') + (yzx + az')

6. Simplify further using the complement law:

a'x + a'z' + yzx + az' = (a'x + a'z') + (yzx + az')

Thus, the simplified form of the Boolean expression [a' + (yz)'][x+z'] is xz' + a'x + a'z'.

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Answer:

To find the percentage decrease, we need to calculate the difference between the initial and final values, divide that by the initial value, and then multiply by 100.

The initial use of electricity was 12,000 kilowatt-hours per month, and the final use was 7,000 kilowatt-hours per month. The difference is:

12,000 - 7,000 = 5,000

To find the percentage decrease, we divide the difference by the initial value:

5,000 / 12,000 = 0.4167

Finally, we multiply by 100 to get the percentage:

0.4167 * 100 = 41.67%

Therefore, the percentage decrease in electricity usage is 41.67%.

Answer:

y=1/5=0.5

Step-by-step explanation:

It would be  more efficient to solve for x in the first equation

The most efficient variable to solve for is the one which appears in one equation only because if solved for the variable that appears in both the equations, it will require more steps.

In the given equation both x and y appear in both the equation, so solving for x or y in either equation would be same, but solving for x in the first equation will be more efficient as the coefficient of x is 1.

It will be solved as:-

x=7-3y

2(7-3y)+4y=9

14-6y+4y=9

-2y=9-14

y=(-5)/(-2)=2.5

x=7-3(2.5)=7-7.5=-0.5

Solving for x in the first equation will be the most efficient approach.

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The solution to the given system of equations is (-0.5, 2.5).

So, x in the first equation

Now, According to the question:

Let's know:

What is a linear system of equations?

A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.

The  system of equations are:

x + 3y = 7 ---(1)

2x + 4y = 9---(2)

From equation (1), we have x=7-3y

So, substitute x=7-3y in equation (2), we get

2 × (7-3y)+4y=9

⇒ 14-6y+4y=9

⇒ 14-2y=9

⇒ 2y=5

⇒ y=2.5

Substitute y=2.5 in equation (1), we get

x+3 × (2.5)=7

⇒ x + 3 × (2.5)=7

⇒ x= -0.5

So, the solution to the given system of equations is (-0.5, 2.5)

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Answer:

11235.35

Step-by-step explanation:

Given data

P=8225

R=4.2%=0.042

T=8years

The simple interest formula is

A=P(1+rt)

Substitute

A=8225(1+0.042*8)

A=8225(1+0.336)

A=8225*1.366

A=11235.35

Hence the balance will be 11235.35

Answer:

y=-2x-9

Step-by-step explanation:

First, convert -2x+y=3 to an expression in slope-intercept form. This will be written as y=-2x+3.

Parallel lines have the same slope.

So, the slope of the new line will also be -2x.

Now, use the given coordinates and put them and the slope into point-slope form.

Point slope: y-y1=m(x-x1)

y+3=-2(x+3)

Finally, distribute -2 to (x+3) and simplify the equation.

y+3=-2x-6

y=-2x-9

Answer:

100

Step-by-step explanation:

Answer:

The answer is C.

Answer:

If 3 brownies require 3/4 cups of flour, then 12 brownies will require 12/3*(3/4) = 3 cups of flour.

Step-by-step explanation:

Answer:

3 cups of flour

Step-by-step explanation:

We know

3/4 cups of flour = 3 brownies

? = 12 brownies

12 brownies are 4 times 3 brownies, so we take 3/4 cups of flour times 4

3/4 times 4 = 3 cups of flour

So, you need 3 cups of flour for 12 brownies

Answer: 39 inch²

Step-by-step explanation:

The rectangle's area was:

= Length * Width

= 6 * 8

= 48 inches²

The square's area is:

= Length * width

= 3 * 3

= 9 inches²

The square was cut out of the rectangle which means the area of the square should be deducted from the rectangle to find out the remaining area.

= 48 - 9

= 39 inch²

Any two angles whose sum is 146 degrees must both be less than 146 degrees. This can be supported by the Triangle Sum Theorem, which states that the sum of the measure of the interior angles of a triangle is 180 degrees.

The Triangle Sum Theorem states that the sum of the measure of the interior angles of a triangle is always 180 degrees. Therefore, if two angles add up to 146 degrees, then both of those angles must be less than 146 degrees. This is because the remaining angle must make up the difference to reach the total of 180 degrees.

Therefore, any two angles whose sum is 146 degrees must both be less than 146 degrees.

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The required perimeter of the hexagon is 24 units.

Given that,
A regular hexagon is formed from 6 equilateral triangles.
Each triangle has a perimeter of 12.
the perimeter of the hexagon is to be determined

Perimeter is the measure of the figure on its circumference.

A polygon is defined as a geometric shape that contains n number of sides of the same size and close shape example, equilateral triangle, square, pentagon, etc.

A regular hexagon is formed from 6 equilateral triangles.
each triangle has a perimeter of 12.
each side of the triangle = 12 / 3
                                      = 4
Now hexagon has 6 sides so the perimeter of the hexagon  = 6 * 4

                                                                                            = 24

Thus, the required perimeter of the hexagon is 24.    

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