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2 years ago

Please help fast!!!!

Mathematics

2 answers:

Maru [420]2 years ago

8 0

Answer:

I think the correct answer should be C

Step-by-step explanation:

2-4= -2

Monica [59]2 years ago

6 0

Answer:

Step-by-step explanation:

The exponent is negative so you put the number under 1 with the exponent positive

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Find the coordinates of V

alexdok [17]

Answer:

Step-by-step explanation:

8 0

2 years ago

I understand the equation, it's just not working out. Can anyone help me figure it out? Thanks in advance.

andreyandreev [35.5K]

You put the 15x + 100 on the angle CEB instead of CED. If you put it in the right spot, it should work out fine since they are vertical angles.

4 0

2 years ago

Add the first 12 terms of this sequence:<br> 15, 45, 135, 405, 1215, ...

UkoKoshka [18]

Answer:

Step-by-step explanation:

a₁ = 15

a₂/a₁ = 45/15 = 3

a₃/a₂ = 135/45 = 3

...

It is a geometric sequence with a common ratio r=3.

Sum of first 12 terms = a₁·(1-r¹²)/(1-r)

= 15·(1-3¹²)/(1-3)

= 15·(-531,441)/(-2)

= 3,985,800

7 0

2 years ago

Which of the following expressions is a factor of the polynomial x 2 +3/2x-1

Elodia [21]

Answer:

$\large \boxed{\sf \ \ \ (x+2)(x-\dfrac{1}{2}) \ \ \ }$

Step-by-step explanation:

Hello,

let's solve

$x^2+\dfrac{3}{2}x-1=0\\\\ 2x^2+3x-2=0 \ \text{multiply by 2}\\\\\\$

$\Delta=b^2-4ac=9+4*2*2=9+16=25$

There are two solutions

$x_1=\dfrac{-3-\sqrt{25}}{4}\\\\x_1=\dfrac{-3-5}{4}\\\\x_1=\dfrac{-8}{4}\\\\\boxed{x_1=-2}$

And

$x_2=\dfrac{-3+\sqrt{25}}{4}\\\\x_2=\dfrac{-3+5}{4}\\\\x_2=\dfrac{2}{4}\\\\\boxed{x_2=\dfrac{1}{2}}$

So we can write

$x^2+\dfrac{3}{2}x-1\\\\=(x-x_1)(x-x_2)\\\\=(x+2)(x-\dfrac{1}{2})$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

5 0

2 years ago

Marnie practiced her basketball dribbling. After 2 tries she had bounced the ball 88 times. On the second try she had 2 fewer bo

Alina [70]

Ok! The first thing u have to do is multiply 2 times 88 which its 178 then u multiply 2 times 8 which it equals 16. Then u add 178+16 and it equals 194.

6 0

3 years ago