PLEASE HELP ME :(
The base of a square pyramid has side lengths that are 14 inches. The distance from the top of the pyramid to the middle of the side of the base is 15 inches. What is the height of the pyramid? Round to the nearest tenth, if necessary.

Answer:

A. Only Khaled

Step-by-step explanation:

The teachers equation is:

[tex]-10x-7y=5[/tex]

[tex]12x-8y=-4[/tex]

If a row operation on the teacher's equation results in any of the system of the students' equation then the two systems are equivalent and will have the same solution.

For instance:

Let's maintain the bottom equation and add both equation to replace the top equation:

[tex]-10x+12x-7y-8y=5+-4\\12x-8y=-4[/tex]

This results in Khaled's equation:

[tex]2x-15y=1\\12x-8y=-4[/tex]

On the other hand we cannot perform a row operation to obtain Miku's equation

The answer is D, I know this because I just did the USATESTPREP

Step-by-step explanation:

Answer:

c?

Step-by-step explanation:

To find the number of blue fish, we set up an equation based on the given information, solving which indicates there are 18 blue fish in the tank (option A).

The question is a word problem asking to find out the number of blue fish in a tank given the total number of fish and the relationships between the counts of different colored fish. We can set up algebraic expressions to solve for the number of blue fish. Let the number of blue fish be represented by x. According to the problem, there are six more yellow fish than blue, which we can express as x + 6. There are four fewer black fish than blue, which we can say is x - 4. The total number of fish is given as 56.

So, the equation we can set up is:

x + (x + 6) + (x - 4) = 56

Simplifying the equation, we get:

3x + 2 = 56

Solving for x, we subtract 2 from both sides to get:

3x = 54

And then divide by 3:

x = 18

Thus, there are 18 blue fish in the tank, which corresponds to option A.

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Answer:

40/7

Step-by-step explanation:

-5 5/7=-40/7

-x=-40/7

x=40/7

Answer:

12 is your answer.I did that and i got it right.

Step-by-step explanation:

Answer: 60

Step-by-step explanation:

since there are 3 different colour hats

4 different colour scarves and

5 different colour jacket

1 hat can be selected in 3 ways

1 scarf can be selected in 4 ways

1 jacket can be selected in 5 ways

Therefore , Tina will have 3 x 4 x 5 different combinations.

This means she will have 60 different combinations

Option A: The entire expression is a sum,

Option C: The term [tex]\frac{7}{r}[/tex] is a quotient are true statements.

Solution:

Given expression:

[tex]$\frac{7}{r}+2^{3}+\frac{s}{3}+11[/tex]

To determine which statements are true:

Option A: The entire expression is a sum.

In the given expression all are addition.

So, it is true.

Option B: The coefficient of s is 3.

No, 3 is in the denominator of s.

The coefficient of s is [tex]\frac{1}{3}[/tex].

So, the given statement is false.

Option C: The term [tex]\frac{7}{r}[/tex] is a quotient.

Yes, 7 is the dividend, r is the divisor and [tex]\frac{7}{r}[/tex] is a quotient.

So, it is true.

Option D: The term [tex]2^3[/tex] has a variable.

No, there is no variable in the term [tex]2^3[/tex].

So, it is false.

Hence Option A: The entire expression is a sum,

Option C: The term [tex]\frac{7}{r}[/tex] is a quotient are true statements.

Answer: A, C,

A: The entire expression is a sum

C: The term 7/r is a quotient

Step-by-step explanation:

The entire expression is a sum

A Sun is the result of an addition problem

The espression 7/r + [tex]2^{3}[/tex] + s/3 + 11 4 terms that we add together.

The statement "The entire expression is sum" it true

The cofficience of s is 3

A coefficient is a number used to multiply a variable.

In the expresion s/3, s is being divided by 3, or more multiplied by 1/3, not multiplied by 3.

The statement " coefficient of s is 3" is nor true

The term 7/r is a quotient.

A quotient is the result of a division problem.

the expression " The term 7/r represent 7 divided by r.

The statement "the term7/r is a quotient " is a quotient" is true.

The tern [tex]2^{3}[/tex] has a varieavle.

Avariable is a letter that stands for an uknown quatity.

There are no letters in the expresion [tex]2^{3}[/tex]

The statement "The term [tex]2^{3}[/tex] has a varieble" is Not true.

The following statements are true

Answer:

x=5

Step-by-step explanation:

we have

[tex]3(x+2)+x=2x+16[/tex]

Solve for x

Distribute left side

[tex]3x+6+x=2x+16[/tex]

Combine like terms left side

[tex]4x+6=2x+16[/tex]

Group terms that contain the same variable

[tex]4x-2x=16-6\\2x=10\\x=5[/tex]

therefore

For x=5

The equation is true

Verify

substitute the value of x=5 in the original expression and evaluate

[tex]3(5+2)+5=2(5)+16[/tex]

[tex]3(7)+5=10+16[/tex]

[tex]26=26[/tex] ----> is true

Answer:

22,500 square feet

Step-by-step explanation:

we know that

The area of a square is equal to

[tex]A=b^2[/tex]

where

b is the length side of the square

in this problem we have

[tex]b=150\ ft[/tex]

substitute

[tex]A=(150)^2\\A=22,500\ ft^2[/tex]

Answer: He can also plant 26 flowers in each pot

Step-by-step explanation:

Answer:

(—2,—5)

Step-by-step explanation:

x² cancels ///

10x —x = —7—11

9x = —18 // divide through by 9//

x = —2 .

y = 4 —20 + 11

Answer:83÷3=27.6 or 27.667

Step-by-step explanation:

The number 83 divided by 3 equals 27 remainder 2.

The long division refers to the mathematical method for dividing large numbers into multiple smaller groups or parts. The number which we divide into small groups is called the dividend, the number by which we divide is called the divisor.

     27

-------------

3 | 83

   - 81

    -----

       20

       - 18

       -----

          20

          - 18

          -----

             2

Therefore, the number 83 divided by 3 equals 27 remainder 2.

Read more about long division

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Answer:  [tex]average\ rate\ of\ change\approx-3[/tex]

Step-by-step explanation:

For this exercise you need to use the following formula:

[tex]average\ rate\ of\ change=\frac{f(b)-f(a)}{b-a}[/tex]

You need to find the average rate of change of the given function g(x) over the following interval:

 [tex][-1,2][/tex]

So, you can see in the table that the point whose x-coordinate is -1, is:

[tex](-1,5)[/tex]

And the point whose x-coordinate is 2, is:

[tex](2,-3)[/tex]

Knowing this, let be:

[tex]a=-1\\f(a)=5\\\\b=2\\f(b)=-3[/tex]

Now you can substitute values into the formula:

[tex]average\ rate\ of\ change=\frac{-3-5}{2-(-1)}[/tex]

Finally, evaluating, you get that the average rate of change over the interval indicated in the exercise, is:

[tex]average\ rate\ of\ change=\frac{-8}{3}\\\\average\ rate\ of\ change=-2.66\\\\average\ rate\ of\ change\approx-3[/tex]

Answer: 9%

Step-by-step explanation:

18/200 equals .09 and when multiplied by 100 because percent is out of 100 you get 9

Option D: A(n) = a + (n – 1) d

Solution:

To identify the formula for finding the nth term of an arithmetic sequence.

Let a be the first term.

d be the common difference of the each term.

n be the term of the number.

A(n) be the nth term of the arithmetic sequence.

Arithmetic formula:

A(n) = a + (n – 1) d

Example: 1, 4, 7, 10, 13, 16, 19, ...

This is a arithmetic sequence.

a = 1, d = 4 – 1 = 3.

To find the 5th term:

Substitute this in the above formula, we get

A(n) = a + (n – 1) d

A(5) = 1 + (5 – 1) 3

       = 1 + 4(3)

       = 1 + 12

A(5) = 13

In the given sequence 5th term is 13.

Hence Option D is the correct answer.

A(n) = a + (n – 1) d

Answer:

A(n) = a + (n - 1)d

Step-by-step explanation:

got it right on quiz

Answer:

10 boxes in the top row.

192 boxes in entire display.

Step-by-step explanation:

Let n be the number of rows.

Given:

Total number of rows = 8

Boxes in bottom row = 38

And each row has four fewer boxes than the row below it.

Solution:

Part A:

We know that the bottom row has 38 boxes and each row has four fewer boxes than the row below it.

Using below function for determining the number of boxes in each rows.

[tex]f(n)=38-(8-n)4[/tex]

Where:

n = Number of row.

We need to find the boxes in the first row.

So, substitute n = 1 in above function.

[tex]f(1)=38-(8-1)4[/tex]

[tex]f(1)=38-7\times 4[/tex]

[tex]f(1)=38-28[/tex]

[tex]f(1)=10[/tex]

Therefore, 10 boxes in the top row.

Part B:

Total boxes in the entire display.

Using formula as given below to determine the sum of the boxes in entire display.

[tex]S_{n} = \frac{n}{2}(f(1)+f(n))[/tex]

Substitute n = 8, f(1) = 10 and f(8) = 38 in the above equation.

[tex]S_{8} = \frac{8}{2}(10+38)[/tex]

[tex]S_{8} = 4(48)[/tex]

[tex]S_{8} = 4\times 48[/tex]

[tex]S_{8} = 192\ boxes[/tex]

Therefore, 192 boxes in the entire display.

Answer:

h= -14

Step-by-step explanation:

pretend there is a 1 in front of the h making it -1h and divide it by 14(ignoring the h), making the 14 a negative

Answer: it is -14 instead of regular 14, because a positive and a negative make a negative. A negative negative make a positive, and so on.

Step-by-step explanation:

Hope this helps, plz mark brainliest

Answer:2 op

Io

N

Step-by-step explanation:

Answer:

we can express its easy like square of 2 is 4 then it 8 less than

Final answer:

In the expression 5x – 8(3y + 13) – 1: 5 is the coefficient of the first term, (3y+13) is a binomial, and –1 is the constant term.

Explanation:

The expression provided is 5x– 8(3y + 13) – 1, and we need to identify the roles of specific parts of each term:

In the first term, 5 is a coefficient.

In the second term, (3y+13) is a binomial.

In the third term, -1 is a constant.

To complete the statements for the given expression 5x – 8(3y + 13) – 1, we need to identify the components of each term:

1. In the first term:

Here, 5 is a coefficient because it is the numerical factor that multiplies the variable x. Coefficients indicate the quantity by which a variable is multiplied.

2. In the second term:

In this term, (3y+13) is enclosed within parentheses, making it a binomial. A binomial is an algebraic expression consisting of two terms separated by either a plus or a minus sign.

3. In the third term:

This term is a constant because it is a fixed numerical value that does not change. Constants can exist independently and do not involve any variables.

Complete question:

Use the given expression to complete the statements.

5x– 8(3y + 13) – 1

In the first term, 5 is a ____.

In the second term, (3y+ 13) is a ___.

In the third term, -1 is a ____.

Answer:

the coefficient of y is 5 the constant is 9

Step-by-step explanation:

7y minus 2y is 5y. so the coefficient is 5

3+6 is 9 the contant is 9

Answer:

n = 450

Step-by-step explanation:

18%·n = 81

18·n/100 = 81

18n = 8100

n = 8100 : 18

n = 450

Answer:

81 is 18% of 450.

Step-by-step explanation:

81 ÷ 18 = 4.5

4.5 x 100 = 450

450 - 18% = 369

450 - 369 = 81

So, 18% of 450 is 81 and 81 is 18% of 450.

Answer:

45.8

Step-by-step explanation:

We need to find the surface area for this entire figure!

We can see that this is a pyramid here - we must find the area of the 3 triangles and the base triangle at the bottom.

The 3 triangles building up the pyramid are all equal to each other.

To find the area of a triangle, use  [tex]Area = base*height/2[/tex]

[tex]Area=3(\frac{5*7}{3} )+(\frac{5*4.3}{2})\\Area=35+10.75=45.75[/tex]

Round to the nearest tenth: 45.75 -> 45.8

Final answer:

To find the height of the tree in yards, divide the height in feet by 3, the conversion factor from feet to yards.

Explanation:

The Redwood National Park is home to some of the largest trees in the world, including Hyperion, the tallest tree in the park at approximately 379 feet. To find the height of the tree in yards, we can convert the height from feet to yards by using the conversion factor of 1 yard = 3 feet.

Height in yards = Height in feet / Conversion factor

Height in yards = 379 feet / 3 feet/yard

Height in yards = 126.33 yards

Therefore, the height of Hyperion is approximately 126.33 yards.

Answer:

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Answer:

35

Step-by-step explanation:

Answer:-3

Step-by-step explanation:-9+6 keep change flip

-9-(-6)= -3

Answer:

-3

Step-by-step explanation:

-9 + 6 = -3

The expression for the total number of miles she drove in two weeks is 254 + c miles

Solution:

Given that,

Last week katlin drove 254 miles

This week she drove c miles

To find: Expression for the total number of miles she drove in two weeks

From given,

Last week = 254 miles

This week = c miles

Therefore,

Total miles in two weeks = last week + this week

Total miles in two weeks = 254 + c

Thus the expression for the total number of miles she drove in two weeks is 254 + c miles