3 years ago

Plzz help me find the answer

Mathematics

1 answer:

serious [3.7K]3 years ago

5 0

It’s the first one 9/2.

You might be interested in

Solve the equation for all values of x by completing the square. 5x^2-70x=-230

Elina [12.6K]

Answer:

$x=7 + \sqrt{3}$

$x=7 - \sqrt{3}$

Step-by-step explanation:

Given equation:

$5x^2-70x=-230$

Divide both sides by 5:

$x^2-14x=-46$

Square half of the coefficient of $x$ : $(-14 \div 2)^2=49$
and add this to both sides:

$x^2-14x+49=-46+49$

Factor the left side and simplify the right side:

$(x-7)^2=3$

Square root both sides:

$x-7=\pm\sqrt{3}$

Add 7 to both sides:

$x=7 \pm \sqrt{3}$

4 0

2 years ago

Read 2 more answers

Help me on dis please

riadik2000 [5.3K]

Answer:

16?

Step-by-step explanation:

Im not sure sorry if its wrong

6 0

3 years ago

Read 2 more answers

Using long divison convert the following mixed number into its decimal equivalent -3 2/3

ki77a [65]

0.667 is -3 and 2/3

7 0

3 years ago

HELP PLEASE BE QUICK

SVEN [57.7K]

Answer:

Step-by-step explanation:

<u>Area of a circle = πr^2</u>

64π / π = πr^2 / π

sqrt(64) = sqrt(r^2)

8 = r

Answer: 8

3 0

4 years ago

The difference between -7 and a number x is no more than -2/3

Troyanec [42]

Answer:

Pregunta muy difícil, no creo que pueda resolver este amigo.

Step-by-step explanation:there is no step-by-step thing because honestly don't understand what your trying to say here. Hmm...

8 0

3 years ago