Ask question

Ask question

All categories

4 years ago

6

Brainliest + Points!

1 answer:

RUDIKE [14]4 years ago

4 0

Answer: D 24.92

Hope this helps

You might be interested in

Solve the quadratic equation<br> give your answer to 2 decimal places<br> : 3x^2+x-5=0

Dima020 [189]

Given:

The quadratic equation is:

$3x^2+x-5=0$

To find:

The solution for the given equation rounded to 2 decimal places.

Solution:

Quadratic formula: If a quadratic equation is $ax^2+bx+c=0$ , then:

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

We have,

$3x^2+x-5=0$

Here, $a=3,b=1,c=-5$ . Using the quadratic formula, we get

$x=\dfrac{-1\pm \sqrt{1^2-4(3)(-5)}}{2(3)}$

$x=\dfrac{-1\pm \sqrt{1+60}}{6}$

$x=\dfrac{-1\pm \sqrt{61}}{6}$

$x=\dfrac{-1\pm 7.81025}{6}$

Now,

$x=\dfrac{-1+7.81025}{6}$

$x=1.13504167$

$x\approx 1.14$

And

$x=\dfrac{-1-7.81025}{6}$

$x=-1.468375$

$x\approx -1.47$

Therefore, the required solutions are 1.14 and -1.47.

3 0

3 years ago

Plz help <br> ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

solong [7]

Answer:

B is correct

Step-by-step explanation:

mrk me brainliest plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

6 0

3 years ago

Please answer all of the 3. <br> PLEASE! And I’ll give you 5 stars and a Thanks?! :)

Ostrovityanka [42]

Answer:

7) 2((7x12) + (7x2) + (12x2)

2(84 + 14 + 24)

2(122)

<u>244</u>

8) 2((13x4) + (4x6) + (13x6))

2(52 + 24 + 78)

2(154)

<u>308</u>

9) 2((4x15) + (4x8) + (15x8))

2(60 + 32 + 120)

2(212)

<u>424</u>

Step-by-step explanation:

3 0

3 years ago

Allen is 5 feet 9 inches tall, terrel is 6 feet 2 inches tall. what is the average height

Cloud [144]

The average height is $5feet$ and $11.5$ inches if Allen is $5 feet 9 inches$ tall and Terrel is $6 feet 2 inches$ tall.

How to find the average height ?

Allen height is $5feet ,9inches$

Terrel height is $6feet,2inches$

And we know that $1feet=12inches$

So Allen height is

$=5*12+9\\=60+9\\=69 inches$

And Terrel height is

$=6*12+2\\=72+2\\=74inches$

Average of the Allen and Terrel height is

$\frac{69+74}{2\\} \\=143/2\\=71.5inches$

And average height in feet is $5feet,11.5inches$

Learn more about the average height is here:

brainly.com/question/28048854

#SPJ4

4 0

2 years ago

219 miles how much gas money would it take at 12 miles per gallon at 2.90 per gallon

Lilit [14]

If you are going 219 miles and you get 12 miles to 1 gallon of gas, then you need 219/12 gallons of gas. 219/12 = 18.25 You need 18.25 gallons of gas to go 219 miles. At $2.90 per gallon, it will cost you 18.25 * 2.90 = $53.93

4 0

4 years ago