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3 years ago

9 squared is what written in standard form?

Mathematics

2 answers:

miss Akunina [59]3 years ago

7 0

9 squared is 81
81 in standard for is the following:
8.1 x 10^1

Hope it helped :)

Lynna [10]3 years ago

6 0

All you need to do is solve
therefore the answer is 81

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Help please... I need help

Contact [7]

Step-by-step explanation:

3x = 12 - 18

3x = (- 6)

X = (-6)/3

x = (-3)

6 0

3 years ago

Nikki, Kylie and Andy are arguing about who has the biggest candy bar. Below are their measurements of each candy bar:

saveliy_v [14]

Answer:

Andy.

Step-by-step explanation:

10 is greater than 9.99 by 0.01. 10 is also greater than 1.999 by 8.001

6 0

3 years ago

Read 2 more answers

A gift box in the shape of a cube has a volume of 216 cm cubed What is the area of the base of the box?

Illusion [34]

Cube
Solve for surface area
A≈216

6 0

4 years ago

Read 2 more answers

Using elimination method

bogdanovich [222]

Answer:

The value of x is 2 and y is (-5)

Step-by-step explanation:

<h3>Given;</h3>

-7x + y = – 19
-2x + 3y = – 19

The value of x and y

<h3>By Using Elimination Method;</h3>

First name the equation

-7x + y = – 19 ...(1)
-2x + 3y = – 19 ...(2)

Now, Multiply equation (1) by 3 we get,

3 × (-7x + y = – 19)

-21x + 3y = – 57

Now, Eliminate

-21x + 3y = – 57

-2x + 3y = – 19

+ – +

-19x = -38

x = -38/-19

x = 2

Now, Put the value of x in equation (2) we get the value of y.

-7x + y = – 19

-7(2) + y = – 19

-14 + y = -19

-14 + 14 + y = -19 + 14

y = -5

Thus, The value of x is (-5) and the value of y is 2.

<h3>For Verification;</h3>

-7x + y = – 19

-7(2) + (-5) = – 19

-14 – 5 = – 19

-19 = -19

-2x + 3y = – 19

-2(2) + 3(-5) = – 19

-4 – 15 = – 19

-19 = -19

Here, L.H.S = R.H.S

Hence Verified!

-TheUnknownScientist 72

4 0

3 years ago

A square room has a tiled floor with 81 square tiles. How many tiles are along an edge of the room?

Sladkaya [172]

Answer:

36 tiles

Step-by-step explanation:

Because the room is square, the numbers of tiles along the edge of the room were multiplied by the same number, meaning that:

81 = x²

So to find x, we must square root both sides of the equation:

$\sqrt{81} = \sqrt{x^2}$

x = 9

So the length of one side is 9 tiles. Now to calculate the circumference, as each side of a square is the same length, we can multiply this number by 4:

9 * 4 = 36

So there are 36 tiles along the edge of the room.

Hope this helps!

4 0

3 years ago