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2 years ago

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Mathematics

1 answer:

luda_lava [24]2 years ago

6 0

Answer:

EXPLAIN

Step-by-step explanation:

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Solve x2 − 12x + 5 = 0 using the completing-the-square method. x = six plus or minus the square root of five x = negative six pl

Andru [333]

we are given

$x^2-12x+5=0$

we have to solve it by completing square method

step-1: Move 5 on right side

$x^2-12x+5-5=0-5$

$x^2-12x=-5$

step-2: Break middle term

$x^2-2*6*x=-5$

step-3: Add 6^2 both sides

$x^2-2*6*x+(6)^2=-5+(6)^2$

$(x-6)^2=31$

step-3: Solve for x

$\sqrt{(x-6)^2} =\sqrt{31}$

we wil get two values

First value is

$x-6=\sqrt{31}$

add both sides 6

$x-6+6=6+\sqrt{31}$

$x=6+\sqrt{31}$

Second value is

$x-6=-\sqrt{31}$

add both sides 6

$x-6+6=6-\sqrt{31}$

$x=6-\sqrt{31}$

so, solutions are

$x=6+\sqrt{31}$

$x=6-\sqrt{31}$ .............Answer

5 0

2 years ago

Liam works at a zoo. He was looking at some data showing the masses of their 5 African elephants. The mean mass of the elephants

hram777 [196]

Answer:

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Step-by-step explanation:

4 0

2 years ago

The original price of a coat is $90. It is on sale for 20% off. How much will you pay if you buy the cost during the sale?

ziro4ka [17]

Answer:

72$

Step-by-step explanation

How to insert in a calculator 90-20%= 72

How to take 20% from a price

Divide the original price by 5. 18

Subtract this new number from the original one. 90 - 18 

The number you calculated is the discounted value. 90 - 18 = 72

6 0

3 years ago

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Please help! This is due soon :(

Papessa [141]

Answer:

what grade us it maybe u can help you but if I cant I'm sorru

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2 years ago

Which ratio below is equivalent to the ratio 7 : 350

Elden [556K]

Answer:

the ratio is 1:50 i don't see anymore ratio underneath

Step-by-step explanation:

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2 years ago