MATHEMATICS HIGH SCHOOL

A square deck has an area of 81 square feet? How long is each side of the deck?

Answers

Answer 1

Answer:

If squaredeck has an area of 81 square feet then each side of the square deck is 9 feet long.

What is Area of Rectangle?

The area of Rectangle is length times of width.

The area of a square is given by the formula A = s²

where A is the area and s is the length of each side.

In this case, we are given that the area of the deck is 81 square feet, so we can plug that into the formula:

81 = s²

To solve for s

we can take the square root of both sides:

√81 = √s²

9 = s

Therefore, each side of the square deck is 9 feet long.

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Answer 2

Answer:

All 4 sides of a square are of the same length.

The formula for the area of a square is s*s = area where s is the length of one side of the square.

s^2 = 81

s = 9 or -9

-9 does not apply here but 9 does.

Each side of the square deck is 9 feet long.

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Find the value of x that makes this a true statement (1/27)^x=3
Which of the following forms a proportion?5/9 = 14/18 3/5 = 21/35 6/12 = 18/34 1/8 = 2/24
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Write 8.542 in expanded form.

Answers

Answer:

if you like my solution

please give me Brainliest.

What the missing length

Answers

the height is 7 the formula. B*H*.5 so 10*7=70, and the half of 70 is 35 or 75*.5=35

Slope of (1,-2) and (-3,7)

Answers

Answer:

-4/9

Step-by-step explanation:

Slope formula: y2-y1/x2-x1

7-(-2)/-3-1

9/-4

-4/9

Best of Luck!

What is 4 over 10 in simplest form

Answers

ok so find 1's

remember that 4/4=1 also x/x=1 those are ones
also remember
if you had
10/30 that equals 10/10 times 1/3=1 times 1/3

so find ones

4/10=2/2 times 2/5=1 times 2/5=2/5

2/5 is 4/10 reduced to simplest form

Given the function rule f(x)= x^-2 - 4x + 3, what is the output of f(-3)?A. 24
B. 21
C. 0
D. -3

Answers

Answer:

f(-3) = 15,111111

Step-by-step explanation:

In order to find out f(-3), we need to substitute x with -3.

Since f(x)= x^-2 - 4x + 3,

f(-3) = (-3)^-2 -4(-3) + 3

f(-3) = 1/9 + 12 + 3

f(-3) = (1 + 108 + 27) / 9

f(-3) = 136 / 9

f(-3) = 15,111111

input -3 for x
f(-3)=(-3)^2-4(-3)+3
f(-3)=9+12+3
F(-3)=24

A

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variationx y
10 12
15 18
20 24

Answers

Say that:

$\left( { x }_( 1 ),{ y }_( 1 ) \right) =\left( 10,12 \right) \n \n \left( { x }_( 2 ),{ y }_( 2 ) \right) =\left( 15,18 \right) \n \n \therefore \quad \frac { \delta y }{ \delta x } =\frac { { y }_( 2 )-{ y }_( 1 ) }{ { x }_( 2 )-{ x }_( 1 ) } =\frac { 18-12 }{ 15-10 } =\frac { 6 }{ 5 } \n \n$

If this is the case,

$y=\frac { 6 }{ 5 } x$

Another way to solve the problem,

$y\propto x\n \n \therefore \quad y=kx$

When x=10, y=12, so...

$12=k\cdot 10\n \n k=\frac { 12 }{ 10 } =\frac { 6 }{ 5 } \n \n \therefore \quad y=\frac { 6 }{ 5 } x$

Answer:

y=1.2x

Step-by-step explanation:

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Explain how you can tell 31\33 is in simplest form

Simplify 10 + 4(x + 1) + 5.

Which of the following is an example of a proper fraction? A. 4 /3 B. 4 /4 C. 3 /4 D. 7 /6