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4 years ago

Will give brainliest please help asap

Mathematics

1 answer:

kirill115 [55]4 years ago

7 0

What do you do here.......

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Please, I need help! What's 4000/4*10^-5 (Can someone add the steps also because I dont understand how to do it either)

vichka [17]

Answer:

0.01

Step-by-step explanation:

(4000/4) * (10^-5)

1000* 0.00001

0.01

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3 years ago

What is 18/21 simplest form

-Dominant- [34]

18 ÷ 3 = 6
21 ÷ 3 = 7

Answer: 6/7

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3 years ago

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What are the solutions of the equation x^6-9x^3+8= 0 use u substitution to solve

labwork [276]

Answer: x = {1, 2}

<u>Step-by-step explanation:</u>

x⁶ - 9x³ + 8 = 0

Let u = x³

⇒ (x³)² - 9(x³)¹ + 8(x³)⁰ = 0

⇒ u² - 9u + 8 = 0

⇒ (u - 1)(u - 8) = 0

⇒ u = 1 or u = 8

Replace u with x³

x³ = 1 or x³ = 8

Take the cubed root of each side

x = 1 or x = 2

7 0

3 years ago

1) The perimeter of a rectangular classroom floor is 90 feet. The length of the floor is twice the

lana [24]

Answer: The equation would NOT help us solve for the length and width of the classroom is " $x + 2y = 90$ ".

Step-by-step explanation:

Let y be the width of the rectangular classroom floor and x be the length of the rectangular classroom floor .

Given ,

The perimeter of a rectangular classroom floor is 90 feet.

The length of the floor is twice the width.

i.e. Length =2 (width)

i.e. x= 2y ..(i)

Also, perimeter = 2(length+width)

$i.e. 2(x+y)=90\\\\\Rightarrow\ 2x+2y=90$

When we put value of x from (i), we get

$2(2y) + 2y = 90$

Hence, the equation would NOT help us solve for the length and width of the classroom is " $x + 2y = 90$ ".

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3 years ago

Fifteen is % of 120.

Mariana [72]

Answer:

15 is 12.5% of 120

35% of 160 is 56

48 is 80%of 60

11 is 20% of 55

1.Equation- a statement that two expressions are equal.

2.Expression- a phrase that represents a mathematical relationship

Step-by-step explanation:

Hope this helps! Sorry if any are wrong!

3 0

3 years ago

Read 2 more answers