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4 years ago

Please hurry. Need an answer quick. Sorry if this is made poorly, I have never used anything like brainly before.

Mathematics

1 answer:

AURORKA [14]4 years ago

8 0

Answer:

I'm pretty sure it's graphing

Step-by-step explanation:

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What two numbers multiply to -8 and add to -4

Ronch [10]

Answer:

-2-2√3, -2+2√3

Step-by-step explanation:

Let x represent one of the numbers. Then the other number is -4-x. We want the product to be -8:

x(-4-x) = -8

-4x -x^2 = -8 . . . . . eliminate parentheses

x^2 +4x = 8 . . . . . . multiply by -1

x^2 +4x +4 = 12 . . . add 4 to complete the square

(x +2)^2 = 12

x +2 = ±√12 = ±2√3

x = -2±2√3

The two numbers are -2-2√3 ≈ -5.4641, and -2+2√3 ≈ 1.4641.

7 0

4 years ago

That <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B6%7D%7B24%7D%20%20%5Cdiv%20%20%5Cfrac%7B2%7D%7B8%7D%20" id="TexFormula1"

liberstina [14]

Quotient=1..............

6 0

3 years ago

The nth term of a sequence is 3n2/2

Anna71 [15]

Question:

The nth term of a sequence is $\frac{3n^2}{2}$ . Find the fifth term of the sequence

Answer:

The 5th term of the sequence is 37.5

Step-by-step explanation:

Given

$nth\ term = \frac{3n^2}{2}$

Required

Find the 5th term

To find the 5th term, we simply substitute 5 for n in the above expression.

This gives

$5th\ term = \frac{3 * 5^2}{2}$

$5th\ term = \frac{3 * 5 * 5}{2}$

$5th\ term = \frac{75}{2}$

$5th\ term = 37.5$

Hence, the 5th term of the sequence is 37.5

3 0

3 years ago

I need help identifying if this is a 90,180,270 degree transformation

Arte-miy333 [17]

$\begin{gathered} Choosing\text{ one point} \\ K(-1,-4) \\ K^{\prime}(1,4) \\ It\text{ means} \\ K^{\prime}=K(-x,-y) \\ Hence \\ This\text{ is a 180\degree transformation} \end{gathered}$

6 0

1 year ago

Solve each system of liner equations y=2x+1 x+2y=17 pls help!

GalinKa [24]

Plug y=2x+1 into x+2y=17, we have:
x+ 2(2x+1)= 17
⇒ x+ 2*2x+ 2*1= 17 (distributive property)
⇒ x+ 4x+ 2= 17
⇒ 5x= 17-2
⇒ 5x= 15
⇒ x= 15/5
⇒ x= 3

y= 2x+1= 2*3+1= 7

Final answer: x= 3, y= 7~

3 0

4 years ago