Which expression is equivalent to the one below?7 = 8O A. 8.O B. 7.1Oc. of887O D. 56

Answer:

48

Step-by-step explanation:

4*2*3 for the 4 flaps

2*4*3 for the 2 tops

(4*2*3) + (2*4*3) = 48

Answer:

52 square inches

Step-by-step explanation:

to find the surface area of a rectangular prism the formula is

S.A.=2(l*w+l*h+w*h)

2(4*3+4*2+3*2)

=52 square inches

here l is length w is width and h is height

Answer:

It’s 17.39 but rounded 17.40

Step-by-step explanation:

13.5-11.5=2

2/11.5=.1739…

.1739*100= 17.39

Answer:

b. 15

Step-by-step explanation:

Given that:

There are 4 independent variables, then the subset regression total is 2⁴ = 16 attainable regression model.

However, out of these 16 regression models, 1 Model contains no predictors which only intercept 3 Model with \((X_1), (X_2), (X_3)\), 3 Model with\((X_1,X_2), (X_1,X_3), (X_2,X_3)\). and 1 Model which comprises all the independent variables.

Therefore, when applying best subsets regression with a model that possesses four (4) independent variables, the number of different combinations of regression models that can be considered is 15.

Answer:

0.5 (any number between 0 and 1)

Step-by-step explanation:

34 * 0.5 = 17

34 > 17 > 0

Answer:

Pang-ugnay- Ang Pang-ugnay ay mga salitang nagpapakita ng relasyon ng dalawang yunit sa pangungusap, maaaring salita, dalawang parirala o ng dalawang sugnay.

Mga Pang-ugnay (Connectives)

a. Pangatnig (conjunction) - mga salitang nag-uugnay ng dalawang salita, parirala o sugnay

b. Pang-angkop (ligature) - mga katagang nag-uugnay sa panuring at salitang tinuturingan

c. Pang-ukol ( preposition) - mga salitang nag-uugnay sa isang pangngalan sa iba pang salita

Answer:

Write the relation as a set of ordered pairs.

Step-by-step explanation:

A relation. An arrow goes from negative 2 to 4, 0 to 6, 2 to 8.

a.

ordered pairs: {(4, –2), (0, 6), (2, 8)}

b.

ordered pairs: {(–2, 4), (0, 6), (2, 8)}

c.

ordered pairs: {(4, –2), (0, 6), (8, 2)}

d.

ordered pairs: {(–2, 4), (6, 0), (8, 2)}

Answer:

the probability that the first card is a queen, the second is a king, and the third is an ace is 0.000482655

Step-by-step explanation:

Given the data in the question;

we know that a deck of cards contains 52 cards

3 cards are dealt out without replacement

probability that first card is queen, the second is king and third is an ace will be;

P(First is a King, second is a Queen, third is an Ace) = [ 4/52 ] × [ 4/51 ] × [4/50]

= 64 / 132,600

=  0.000482655

Therefore,  the probability that the first card is a queen, the second is a king, and the third is an ace is 0.000482655

the answer is g(x)= (x+6).

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.

here, we have,

from the given , we get,

f(x)=x^4

and, f(g(x))= (x+6)^4

hence, the answer is g(x)= (x+6).

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Answer:

Set your calculator to Degree mode.

55^2 = 90^2 + 50^2 - 2(90)(50)cos(C)

3,025 = 10,600 - 9,000cos(C)

-7,575 = -9,000cos(C)

cos(C) = 101/120

C = cos^-1 (101/120) = 32.7°

Step-by-step explanation:

vdoudjlnbllgoogskllkbjllh........

Question: 2/3 of x = 1/4 of x - 5

Answer : I think this is the answer... hope this helps you buddy!

2/3x = 1/4x-5

= 2/3x - 1/4x = -5

= (same denominator) 8/12x - 3/12x = -5

= 5/12x = -5

= x = -5/ 5/12

= x = - 1/ 2.4

The range of the function is the set of all y-values for which the function is defined, which is all real numbers y≤13.

Number is a mathematical entity used to represent a computer magnitude it can be symbol or a combination of simple you should in order to take quantity such as the two, five, seven, three or eight number are used to verify the context including counting measuring and computing.

The graph of the quadratic function can be sketched by first finding the vertex and intercepts. The vertex of the parabola is the point (2,9) and the intercepts are the points (0,13) and (4,5). Plotting these points and connecting them with a smooth curve will give the graph of the quadratic function.

The equation for the parabola's axis of symmetry is x = 2. This means that the vertex is located at the center of the parabola and that the parabola is symmetrical about the x-axis.

The domain of the function is the set of all x-values for which the function is defined, which is all real numbers x≥0. The range of the function is the set of all y-values for which the function is defined, which is all real numbers y≤13.

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Therefore, the interest portion of the seventh payment is:7,000 x (1 + r + r2 + r3 + r4 + r5 + r6) / r7 - 7,000.

We have the following payments and their corresponding times of payment:At the end of year 1: $1,000At the end of year 2: $2,000At the end of year 3: $3,000At the end of year 4: $4,000At the end of year 5: $5,000At the end of year 6: $6,000At the end of year 7: $7,000

At the end of year 8: $8,000At the end of year 9: $9,000At the end of year 10: $10,000The present value of these payments is:PMT x [(1 - (1 + r)-n) / r]where PMT is the payment, r is the interest rate per year, and n is the number of years till payment.

For the first payment (end of year 1), the present value is:1,000 x [(1 - (1 + r)-1) / r]which equals

1,000 x (1 - 1 / (1 + r)) / r = 1,000 x ((1 + r - 1) / r) = 1,000

For the second payment (end of year 2), the present value is:2,000 x [(1 - (1 + r)-2) / r]which equals 2,000 x (1 - 1 / (1 + r)2) / r = 2,000 x ((1 + r - 1 / (1 + r)2) / r) = 2,000 x (1 + r) / r2

For the seventh payment (end of year 7), the present value is:

7,000 x [(1 - (1 + r)-7) / r]

which equals

7,000 x (1 - 1 / (1 + r)7) / r = 7,000 x ((1 + r - 1 / (1 + r)7) / r) = 7,000 x (1 + r + r2 + r3 + r4 + r5 + r6) / r7

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Matt ate 1/6 of the bag of peanut

Matt had 4/6 bag of peanut

He ate a quarter of what was in the bag

The amount of peanut he ate can be calculated as follows

= 4/6 × 1/4

= 4/24

= 1/6

Hence Matt ate 1/6 of the bag of peanut

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Answer:

See explanation

Step-by-step explanation:

It appears that the second graph is better since it seems to be rather consistent. The graph of the first one seems out of place. Therefore it seems to be confusing and could be misleading.

Answer: 1

Step-by-step explanation:

Exact form: \(5\sqrt{14} + 2\sqrt{83}\)

Decimal form: 36.92915

The average rate of change of the function over the interval is 1

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

f(x) = x

The interval is given as

From x = 4 to x = 9

The function is a linear function

This means that it has a constant average rate of change

So, we have

f(4) = 4

f(9) = 9

Next, we have

Rate = (9 - 4)/(9 - 4)

Evaluate

Rate = 1

Hence, the rate is 12

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Answer:

Step-by-step explanation:

Set up a proportion

x / 1 oz = 2.60 dollars / 20 ounces

Notice your answer is going to be in dollars. the ounces cancel out.

x = 2.60/20

x = 0.13              1 ounce = 13 cents.

Answer:

20 * price of 1 ounce = 2.60

price of 1 ounce = 2.60/20

= 0.13 $ = 13 cent

Answer:

$3480

Step-by-step explanation:

We know that the tax rate for the first $8000 is 15% and after $8000 the tax is 19%.

This means the total amount of money that Christine have to pay is equal to $8000 × 15% + ($20000 (the total) - $8000 (the amount that she already paid for the first $8000)) × 19%

This is equal to $1200 + $12000 × 19%

= $1200 + $2280

= $3480

Therefore, Christine must pay $3480 in income tax.

Answer:

The correct option is C) 12.00%.

Step-by-step explanation:

This can be calculated using the formula for calculating the effective annual rate (EAR) as follows:

EAR = ((1 + (i / n))^n) - 1 .............................(1)

Where;

EAR = effective annual rate =  12.682%, or 0.12682

i = annual percentage rate (APR) = ?

n = Number of compounding periods or months = 12

Substituting the values into equation (1) and solve for i, we have:

0.12682 = ((1 + (i / 12))^12) - 1

0.12682 + 1 = (1 + (i / 12))^12

1.12682 = (1 + (i / 12))^12

(1.12682)^(1/12) = (1 + (i / 12))^(12/12)

1.12682^0.0833333333333333 = 1 + (i / 12)

1.00999962428035 - 1 = i / 12

0.00999962428035 = i / 12

i = 0.00999962428035 * 12

i = 0.119995491364199, or 11.9995491364199%

Approximating to 2 decimal places, we have:

i = 12.00%

Therefore, the correct option is C) 12.00%.

Answer:

\(\frac{8-\sqrt{6} }{2}\)

Step-by-step explanation:

To rationalize the denominator, we need to multiply both the numerator and denominator by the conjugate of the denominator, which in this is 2 - √6.

We can write the expression:

\(\frac{3\sqrt{6}+5 }{2+\sqrt{6}} *\frac{2-\sqrt{6}}{2-\sqrt{6} }\)

We can use the special product of the difference of squares to simplify the denominator:

\((2 + \sqrt{6})(2-\sqrt{6}) = 2^2 - (\sqrt{6})^2 =4 - 6 = -2\)

We can use distributive for the numerator:

\((3\sqrt{6}+5)(2-\sqrt{6})=6\sqrt{6} -18+ 10-5\sqrt{6} =\sqrt{6} -8\)

Now we can rewrite the fraction:

\(\frac{\sqrt{6}-8 }{-2} =\frac{8-\sqrt{6} }{2}\)

Answer:

She can decompose it into two rectangles or a triangle

Step-by-step explanation:

I just did this on EDMENTUM its right!

Answer:

6th grade all the way up to colledge

Step-by-step explanation:

Answer:

Not really ideal as this is just fact finder and not crunch home schooling, This is because as the real teachings for 3rd grader and 6th grader start with worksheets and end with tests and such prep for such is exactly worksheets and tests, then mock past papers and predicted past papers and finally learning the specification ie) formula need to be at front of answers to guarantee higehr points as one of the specs of good exam efforts.

Thus saying;  For 3rd yr and 6th graders

Maths worksheets that would help both units are

Fractions both converting, adding (HCF for denominator) , dividing (Flipping and subtracting), multiplying  various ways.

Graphs  Showing all equations

Linear is y to find points = mx+c format

Linear is equation of the line is  y - y1 = y1 (x-x1)

Perpendicular is  if m1 , m2 are perpendicular lines then then m1= -1/m2   which basically means  divide your gradient by -1.

For year 6 build up to partial fractions A / ( x+ a)  +B/ (x+a)^2  =  C/(x+b)  

Being special case of the recognised formula   (x)^2 (a+b) sort of question.

Faster Theorem = f(a)

Then x-a is a factor of f(x)

inequalities true method is negating flips

<  flips to > and vice verca

when rearranging etc.

Index Laws  

a^n x a ^m = a^ n+m

a^n = 1   as  n always means 1   and 1x 1 = 1

Here their are 6 formats for index laws

Log Laws

In 1 = 0  is year 7

Here there is 6 In   as Log law examples to find in Log type question formats.

ie) In xy = In x + Iny

and

Inx/y = In x-Iny

In 1/x =  negative  - In x  

as it turns negative from moving from divide to the side of the = sign.

This is why worksheets are so important.

As reflecting y = x even can be tough to recognise sometimes.

Midpoint formula is  x^1 +x^2  /  2  see if they know this.

Find x  <-> y do they know they would need to rearrange

Reciprocal graphs

find y = k/x  find the graph

Reciprocal graphs

find y = -k/x   find the graph   (its opposite diagonals reciprocal to the one above

Reciprocal graphs

find y =  k/x^1   (it shows a symmetrical (upside down V above the x axis)

Reciprocal graph

find k/x-1    it shows a symmetrical V below x axis  so they reflect with the reciprocal above, one above.

Get them to draw it and make a game of it.

This sort of thing will help your kindergarten sit at table and draw and remember formula as its just y = k/x  etc.

Other functions such as Domain = input x  and Range = input y can be drawn out for the kindergarten child and cut out x and y's help him play games.

Nth route needs N

Such formula is   a^n = 1

^ this is a square so cna be shown   smaller number raised to n

like n²   so you cna also cut these out and make them interactive for your kindergarten child along with fractions and Surds for year 6.

The Units in books are around 200 - 235 for year 3-6

I would most certainly get at least 1/4 of these in worksheets and attempt 2 easy and 2 hard questions on each, then learn formulas and then do past papers and mock exams that show the answer to re correct and try again.

Such maths websites include fun mock exam tests answer given etc..

Copy and paste the formulas so you can help them.

IF you need more just ask me below and post request and i can try sending whole list for you. But you would have to do another question if the list is full where you can remind me here when I've responded same time

Take care.

Hope this helps.

Answer:

A.

The student made an error in step 3 because a is positive in Quadrant IV; therefore,

\(cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}\)

Step-by-step explanation:

Given

\(P\ (a,b)\)

\(r = \± \sqrt{(a)^2 + (b)^2}\)

\(cos\theta = \frac{-a}{\sqrt{a^2 + b^2}} = -\frac{\sqrt{a^2 + b^2}}{a^2 + b^2}\)

Required

Where and which error did the student make

Given that the angle is in the 4th quadrant;

The value of r is positive, a is positive but b is negative;

Hence;

\(r = \sqrt{(a)^2 + (b)^2}\)

Since a belongs to the x axis and b belongs to the y axis;

\(cos\theta\) is calculated as thus

\(cos\theta = \frac{a}{r}\)

Substitute \(r = \sqrt{(a)^2 + (b)^2}\)

\(cos\theta = \frac{a}{\sqrt{(a)^2 + (b)^2}}\)

\(cos\theta = \frac{a}{\sqrt{a^2 + b^2}}\)

Rationalize the denominator

\(cos\theta = \frac{a}{\sqrt{a^2 + b^2}} * \frac{\sqrt{a^2 + b^2}}{\sqrt{a^2 + b^2}}\)

\(cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}\)

So, from the list of given options;

The student's mistake is that a is positive in quadrant iv and his error is in step 3

Answer:

a on e2020 :)

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

The property you are referring to is called the associative property of multiplication. According to this property, when multiplying three numbers, the grouping of the numbers does not affect the result. In other words, you can change the grouping of the factors without changing the product.

In the equation you provided: 3x(5x7) = (3x5)7

The associative property allows us to group the factors in different ways without changing the result. So, whether we multiply 5 and 7 first, or multiply 3 and 5 first, the final product will be the same.

135 in Mayan notation is represented by one dot over four bars, followed by one dot over three bars, and then one dot over five dots.

To convert 135 to Mayan notation, we repeatedly divide by 20 and use the remainders to determine the number of dots and bars in each position. First, we divide 135 by 20 to get a quotient of 6 with a remainder of 15. The remainder of 15 corresponds to 1 dot over 5 dots and 2 bars (10 + 5).

Next, we divide 6 by 20 to get a quotient of 0 with a remainder of 6. The remainder of 6 corresponds to 1 dot over 3 bars (15). Finally, we have a quotient of 0 with a remainder of 6, which corresponds to 1 dot over 4 bars (20).

Putting these together, we get the Mayan representation of 135 as one dot over four bars, followed by one dot over three bars, and then one dot over five dots.

Complete question:

Convert the following numbers to Mayan notation. Show your calculations used to get your answers. 135?

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Given statement solution is :- It  would cost $680 to install tile in the dining room and $315 to install carpet in the bedroom.

To find the cost of installing tile in the dining room and carpet in the bedroom, we need to calculate the areas of both rooms first.

Given:

Every 2 centimeters on the floor plan represents 1 meter of the house.

Dining Room:

On the floor plan, the dining room is 8 cm by 10 cm.

Converting this to meters, the dimensions of the dining room are 8 cm / 2 = 4 meters by 10 cm / 2 = 5 meters.

The area of the dining room is 4 meters * 5 meters = 20 square meters.

Bedroom:

On the floor plan, the bedroom is 6 cm by 10 cm.

Converting this to meters, the dimensions of the bedroom are 6 cm / 2 = 3 meters by 10 cm / 2 = 5 meters.

The area of the bedroom is 3 meters * 5 meters = 15 square meters.

Now, let's calculate the costs.

Cost of Tile:

The cost of installing tile is $34 per square meter.

The area of the dining room is 20 square meters.

Therefore, the cost of installing tile in the dining room is 20 square meters * $34/square meter = $680.

Cost of Carpet:

The cost of installing carpet is $21 per square meter.

The area of the bedroom is 15 square meters.

Therefore, the cost of installing carpet in the bedroom is 15 square meters * $21/square meter = $315.

Therefore, it would cost $680 to install tile in the dining room and $315 to install carpet in the bedroom.

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Answer:

Step-by-step explanation:

First you need to find a common denominator which in this case it 10

*Remember that whatever you do to thee bottom you need to do to the top*

3/10 - 3/10

2/5 = 4/10

1/2= 5/10

So the order is

Katrina - 3/10

Jackie - 4/10

Molly - 5/10

Hope this helped