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3 years ago

PLEASE HELP!! I WILL GIVE BRAINLIEST!!!

Mathematics

2 answers:

Cerrena [4.2K]3 years ago

8 0

Answer:

Step-by-step explanation:

I HAVE NO IDEA THIS WAS A QUESTION FRO ME AND I GOT IT WRONG

PLEASE GIVE ME BRAINLIEST

AysviL [449]3 years ago

7 0

Answer:

x and y are the same lines

Step-by-step explanation:

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Put 2 1/4 : 6 3/4 into a unit rate PLEASE NOWWWWWWWWW

Maksim231197 [3]

Answer:

njlaffbbglakngbaabhhet

Step-by-step explanation:

7 0

3 years ago

Factor completly. do not answer if you dont know it please!! ill give u brainliest

mariarad [96]

Answer:

(2x+1)(2x−1)

Step-by-step explanation:

4x^2−1

(2x+1)(2x−1)

3 0

2 years ago

Read 2 more answers

Pete played 18 tennis matches in a week. Jack played 6 fewer matches than Pete.

Firdavs [7]

Answer:

<h2>Pete played 1.5 times the number of matches that Jack played.</h2><h2 />

Step-by-step explanation:

Pete played 18 tennis matches in a week.

P = 18

Jack played 6 fewer matches than Pete.

J = P - 6

J = 18 - 6

J = 12

How many times the number of matches pete played is the number of matches jack played?

18 / 12 = 1.5

Pete played 1.5 times the number of matches that Jack played.

8 0

3 years ago

Read 2 more answers

The first 150 attendees at a

pashok25 [27]

Use proportion or formula or working

Part
____== %_

Whole. 100

Answer: 500
500 people attended the game

3 0

2 years ago

What is the sum of 20x^2-10x-30

ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

The correct question is

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

$ax^{2} +bx+c=0$

The sum of the roots is equal to

$-\frac{b} {a}$

in this problem we have

$20x^{2} -10x-30=0$

$a=20\\b=-10\\c=-30$

substitute

$-\frac{(-10)} {20}=0.5$

Verify

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

$a=20\\b=-10\\c=-30$

substitute

$x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}$

$x=\frac{10\pm\sqrt{2,500}} {40}$

$x=\frac{10\pm50} {40}$

$x=\frac{10+50} {40}=1.5$

$x=\frac{10-50} {40}=-1$

The roots are x=-1 and x=1.5

The sum of the roots are

$-1+1.5=0.5$ ----> is ok

5 0

3 years ago