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3 years ago

Pls asap completing square X^2 -24x+5=0

Mathematics

1 answer:

anzhelika [568]3 years ago

4 0

Answer:

Step-by-step explanation:

x² - 24x + 5 = 0

x² - 24x = -5

Now divide the co efficient of x by 2 and square the quotient and add to both sides

24/2 = 12

12² = 144. Now add 144 to both sides of the equation.

x² - 24x + 144 = 5 + 144

x² - 24x + 144 = 149

x² - 2*12*x + 12² = 149

(x - 12)² = 149

Both sides take square root

x - 12 = ±√149

x = 12 ± √149

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QUESTION #5 - Consumer Math

Svetach [21]

Answer:

$2.40

Step-by-step explanation:

We know that the sales tax is 8% , we also know that we want to buy two t shirts that cost $15.00 each.

So first, look at what we are purchasing, two t-shirts costing 15.00 dollars each.

Since we are buying two, multiply $15 by 2,

==> $30.00 dollars

And since the sales tax is 8%, to find how much we will pay will mean to multiply the amount by the percent,

30 * 8%

==> $2.40 dollars

You will pay $2.40 dollars in tax

3 0

3 years ago

10/5 points, 1 question ( no rude answers )

Juli2301 [7.4K]

The answer is the third one.

(7,0)

6 0

3 years ago

Read 2 more answers

A carpenter needs to cut four sections, each 3–feet 8–inches long, from a piece of molding. If the board is only sold by the foo

KIM [24]

Alright, lets get started.

The length of each section what carpenter needs to cut is 3 feet and 8 inches.

Converting 3 feet and 8 inches into feet only, we know, $12 inches = 1 feet$

So, 3 feet 8 inches = $3 +\frac{8}{12} =3 +\frac{2}{3} =\frac{11}{3}$ feet

It means length of each section = $\frac{11}{3}$ feet

Carpenter needs to cut 4 sections, so length of 4 sections will be = $4*\frac{11}{3}=\frac{44}{3}=14\frac{2}{3} feet$

2/3 feet means 8 inches so she needs board 14 feet 8 inches

Board is only sold by the feet only so, she has to puchase 15 feet board. : Answer

Hope it will help :)

4 0

3 years ago

Which of the following is equivalent to 7 - 2(x + 2) < -4 - 3(1 - x)?

Doss [256]

7-2(x+2)<-4-3(1-x)

7-2x-4<-4-3+3x

7-4+4+3<3x+2x

5x>10

-5x<-10

answer: C.

3 0

3 years ago

Determine the unknown side of the similar triangle.<br> A) 8 <br> B) 12 <br> C) 18 <br> D) 24

blsea [12.9K]

Answer:

B-12

Step-by-step explanation:

Since 24÷12=2 you have to do 6×2 to find the ? and 6×2=12

8 0

3 years ago