4. The perimeter of a row of tiles is 41 inches. How many tiles are there in the row?

Answer:

B=(-3, -5)

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

Answer:

He saved $4

1/5 of the total amount saved

Step-by-step explanation:

20 - 16 = 4

Answer:

t = 70 tons/1.5 tons/min = 46.7 min = 2800 sec before boat sinks

S = V * t

V = S / t = 20 mi * 5280 ft/mi / 2800  sec  = 37.7 ft/sec

Since 88 ft/sec = 60 mph

the speed is 60 * 37.7 / 88 = 25.7 mph

Answer:

B: 1.53

Step-by-step explanation:

The mean, or average, is 4, and n, the amount of numbers, is 7. To find the standard deviation, first, all of the numbers are subtracted by the mean. This makes (-3, 0, 0, 0, 0, 1, 2). Square all of them to get (9, 0, 0, 0, 0, 1, 4). Next add the squared numbers together (9 + 0 + 0 + 0 + 0 + 1 + 4 = 14). Next, the variance needs to be found. That is found by this formula: (Sum of previous number set ÷ (n - 1)). So in this case, (14 ÷ (n - 1)). Since n is 7, it is (14 ÷ (7 - 1)), or (14 ÷ 6). The answer to that is 2.3 repeating. After the variance is found, it is square rooted to get the standard deviation. √2.3 is about 1.53. Hope this helps! Have a great day! :)

A²+B²= C²

31²+ 21²= z²

961+441 = z²

1402= z²

z= 37.443290454

Answer:

The answer is thirty - seven hundredths

Step-by-step explanation:

Answer:

Cost of Washer = $696

Cost of Dryer = $232

Step-by-step explanation:

Start by making and equation, put a variable for the missing prices, let's say the cost of the dryer is 'x' and since the cost of the washer is three times, it will be '3x'.

Put the equation together, so we can add the x variables together.

3x + x = 4x

The total cost will be what the '4x' is equal to.

4x = 928

Going back to algebra, we solve the equation by dividing both sides by 4.

x = 232

Remember x is the variable we gave to the dryer, so now we must find the cost of the washer. In order to do this, we will have to multiply it by 3.

3x

3(232) = 696.

To check the answer, we can add them together to make sure we get the total cost.

696 + 232 = 928

Answer:

the answer is 3

Step-by-step explanation:

21 x 3 =7

hope it helps

Answer:

21/7

Step-by-step explanation:

Move 7 to next side with opposite process it is multiple after move it will be divided so 21x (21/7) it will be 7 although (21/7)equivalent to 1/3

Answer:

1330 in.

Step-by-step explanation:

38 x 35 = 1330

Answer:

1330

Step-by-step explanation:

area = b x h

base (38)

height (35)

38 x 35 = 1330

Answer:

2 and 3

Step-by-step explanation:

2 twice is 4 and 4 is one more than 3. 3 plus 2 is 5.

The two numbers are 2 and 3.

A number is a basic unit of mathematics. Numbers are used for counting, measuring, and comparing amounts. A number system is a set of symbols, or numerals, that are used to represent numbers.

Given that, Twice, one number is equal to one more than a second number. The sum of the numbers is five.

Let the numbers be a and b, establishing the equations,

2a = b+1

2a-b = 1........(i)

a+b = 5..........(ii)

Adding the equations, we get,

a = 2

b = 3

Hence, the two numbers are 2 and 3.

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Answer:

Step-by-step explanation:

a

Answer:

The answer is A. $145.83

Step-by-step explanation:

The total cost of tuition for one year is $15,000. Mary's parents will pay half of this amount, which is $15,000 / 2 = $7,500. Mary has a scholarship of $4,000, so the amount she needs to save for the first year of college is:

$15,000 - $7,500 - $4,000 = $3,500

Mary has 2 years to save this amount, so she needs to save:

$3,500 / 2 = $1,750 per year

To find out how much Mary needs to save every month, we divide the yearly amount by the number of months in a year:

$1,750 / 12 = $145.83

Therefore, Mary needs to save $145.83 every month for 2 years in order to have enough money to pay for the first year of college. The answer is A. $145.83.

Answer:

A. $145.83

Step-by-step explanation:

The first year is $15,000.

Her parents are paying half.

So that means $15,000-$7500 = $7500 left.

Next subtract the scholarship of $4000.

$7500-$4000 = $3500. That's the amount left that Mary needs to save up for.

Mary has 2 years to save. That's 24 months.

$3500/24 = 145.833333333 = $145.83 per month. So pick option A.

Answer:

x < -3 or x > 2

Step-by-step explanation:

x² + x - 6 > 0

Convert the inequality to an equation.

x² + x - 6 = 0

Factor using the AC method and get:

(x - 2) (x + 3) = 0

If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.

x - 2 = 0

x = 2

x + 3 = 0

x = -3

So, the solution is x < -3 or x > 2

the “/“ sign means division, what kind of question even is this.

9/5= 9÷5

19/28=19÷28

So for the last one, we can turn it into an improper fraction which is:

8/5 = 8÷5

Lelah can arrange the four posters in 24 ways.

A permutation is an arrangement of objects in a definite order. The members or elements of sets are arranged here in a sequence or linear order.

Now it is given that,

Number of poster = 4

Number of walls = 4

Since one poster of each team to put one poster on each of her four walls.

So, number of ways = 4!

⇒ number of ways = 4x3x2x1

⇒ number of ways = 24 ways

Thus,  Lelah can arrange the four posters in 24 ways.

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Answer:

15

Step-by-step explanation:

180-15

Hello!

the sum of the angles in the triangle = 180°

so the 3rd angle = 180° - 165° = 15°

Answer:

5

Step-by-step explanation:

y²-y¹/x²-x¹

Where y²=27

y¹=2

x²=8

x¹=3

= 27-2/8-3

=5

Answer:A

Step-by-step explanation:

To find the rate of decay, we need to use the formula A(t) = P(0.82)^t, where A(t) is the amount after t years, P is the initial amount, and 0.82 is the decay factor.

The decay factor is equal to 1 minus the decay rate, so we can solve for the decay rate as follows:

0.82 = 1 - r

r = 1 - 0.82

r = 0.18

Therefore, the rate of decay is 18%, which corresponds to answer choice A.

Answer:

A

Step-by-step explanation:

Answer:

-2(n+1)

Step-by-step explanation:

g(x)= x-2

g(-2n)=(-2n)-2

=-2n-2

=-2(n+1).

Answer:

$450.

Step-by-step explanation:

62% = 0.62.

Let yesterday's price be $x, then.

0.62x = 279

x = 279 / 0.62

= $450.

The reflection is

A reflection of a point, a line, or a figure in the X axis involved reflecting the image over the x axis to create a mirror image. In this case, the x axis would be called the axis of reflection.

For reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same.

and, for reflecting over the Y axis is to negate the value of the x-coordinate of each point, but leave the y value the same.

So, by considering the above value rules the reflection of the given points as follows over respective axis.

E(7, 1) ⇒ (7, -1)

Here, the reflection is over x-axis because the y value is changing

F(-3, 5) ⇒ (-3, -5)

Here, the reflection is over x-axis because the y value is changing

G(6, -2) ⇒ (-6, -2)

Here, the reflection is over y-axis because the x value is changing.

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Answer:

315 yd cubed

Step-by-step explanation:

To find the volume of the pyramid, we first need to consult the equation below. Thebase is for the rectangular portion, then after multiplied by the height it is divided by 3 to get the pyramid.

\(\frac{1}{3} (B * H )\)

To get the base, we multiply the length by the width.

21 * 9 = 189

189 * 5 = 945

945 divided by 3 = 315

Answer:

Let's find the base area:

21 x 9 = 189

Now let's multiply the base area by the height:

189 x 5 = 945

Now let's divide by 3( x 1/3 ):

945 divided by 3(x 1/3) = 315 yd^3 is your answer

Step-by-step explanation:

Formula area of a rectangular Pyramid(just like any other pyramid):

BH x 1/3

To find base we multiply length by width just using the basic formula of finding area of a rectangle.

Then we multiply our base area by our height.

One we've done that we now divide by 3(multiplying by 1/3)

Answer:

2520

Step-by-step explanation:

 72

x 35

_____

360

2160

______

2520

Answer:

1) are equal (congruent), are opposite from each other

2) (11y-36)= 63.

3) Add 36 to both sides.

11y = 99. Divide both sides by 11.

Y = 9

4) Next to each other, No numerical relationship

Step-by-step explanation:

Answer:

Can’t rlly see 1-4

Step-by-step explanation:

5:a=12,b=5

a^2+b^2=c^2

144+25=169

c=13

6: a=8, c=10

64+b=100

b=6

7: a=15,c=17

b=8

8:b=40,c=50

a=30

9:b=2,c=4

a=2 root 3

The entrepreneur's revenue is  $2325x, entrepreneur's cost is $33,750 + $1700x and entrepreneur's profit from x sold-out performances is  $625x - $33,750

The entrepreneur's revenue from x sold-out performances is given by the formula:

Revenue = (Price per Performance) x (Number of Performances)

Revenue = $2325 x x

Revenue = $2325x

The entrepreneur's cost from x sold-out performances is given by the formula:

Cost = Overhead + (Production Cost per Performance) x (Number of Performances)

Cost = $33,750 + $1700x

The entrepreneur's profit from x sold-out performances is the revenue minus the cost:

Profit = Revenue - Cost

Profit = $2325x - ($33,750 + $1700x)

Profit = $625x - $33,750

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By analyzing the graph and evaluating the objective function at each vertex of the feasible region, we can find the optimal solution, which is the vertex that maximizes the objective function z = 3x + y.

To find the optimal solution of the given problem using the graphical method, we need to plot the feasible region determined by the given constraints and then identify the point within that region that maximizes the objective function.

Let's start by graphing the constraints:

1. Plot the line 2x - y = 5. To do this, find two points on the line by setting x = 0 and solving for y, and setting y = 0 and solving for x. Connect the two points to draw the line.

2. Plot the line -x + 3y = 6 using a similar process.

3. The x-axis and y-axis represent the constraints x ≥ 0 and y ≥ 0, respectively.

Next, identify the feasible region, which is the region where all the constraints are satisfied. This region will be the intersection of the shaded regions determined by each constraint.

Finally, we need to identify the point within the feasible region that maximizes the objective function z = 3x + y. The optimal solution will be the vertex of the feasible region that gives the highest value for the objective function. This can be determined by evaluating the objective function at each vertex and comparing the values.

Note: Without a specific graph or additional information, it is not possible to provide the precise coordinates of the optimal solution in this case.

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Answer:

(a)Jupiter

(b)24.4 km

(c)\(1.33 \times 10^{27}$ kg\)

Step-by-step explanation:

Part A

The planet with the greatest ma.ss is Jupiter.

It has a ma.ss of \(1.898 X 10^{27}$ kg\)

Part B

The diameter of Mercury = 4.88 X 10

Radius = Diameter/2

Therefore:

Radius of Mercury

\(=\dfrac{4.88 X 10}{2}\\ =2.44 X 10\\=24.4$ km\)

Part C

\(M$a.ss of Saturn = 5.68 X 10^{26}\\$Mass of Jupiter = 1.898 X 10^{27}\\$Difference in their ma.ss =(1.898 X 10^{27})-(5.68 X 10^{26})\\=1.33 \times 10^{27}$ kg\)