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nordsb [41]
3 years ago
10

How do you solve this

Mathematics
1 answer:
lys-0071 [83]3 years ago
5 0
2x^2 + 14x = -12

Step 1: Subtract -12 from both sides.

2x^2 + 14x - (-12) = -12 - (-12)

2x^2 + 14x + 12 = 0

Step 2: Factor the left side of the equation.

2(x + 1)(x + 6) = 0

Step 3: Set Factors equal to 0.

x + 1 = 0 or x + 6 = 0

x = -1 or x = -6

Answer:
x = -1 or x = -6

Hope this helps. : )
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A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s is $17.58. How large is the
laila [671]

Answer:

<h2>$5.03</h2>

Step-by-step explanation:

Given data          

Sample Mean (M):  $48.77  

Sample Size (n): 20

Standard Deviation (σ) :  $17.58

Confidence Level: 80%

 we know that z*-Values for 80% Confidence  Levels is 1.28

the expression for margin of error is given bellow\

MOE= z*σ/√n

We can now substitute into the expression and solve for the MOE as

MOE= 1.28*17.58/√20

MOE= 22.502/4.47

MOE= 22.502/4.47

MOE= 5.03

The margin of error for a 80 % confidence interval is $5.03

3 0
3 years ago
Is 2x+4+3(2x-1) equivalent to 8x-2
almond37 [142]

Answer: 2x+4+3(2x-1) is not equivalent to 8x-2. it is equivalent to 8x+1

Step by step solution:

Step 1 :

Equation at the end of step 1 :

(2x + 4) + 3 • (2x - 1)

Step 2 :

Final result :

8x + 1

3 0
3 years ago
The function f(x) = 467(5)x represents the growth of a ladybug population every year in a wooded area. Adrianne wants to manipul
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F(x)=467(<span>5^<span>1/4</span></span><span>)^<span>4<span>x is the closest I can get.</span></span></span>
4 0
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Read 2 more answers
Are 6y + 12 and 6 (y + 2) equal?
Anna007 [38]
Yes, this is because if you were to multiply 6 by y and 6 by 2 (to get rid of the parenthesis), you would get 6y+12, which is the first expression
7 0
2 years ago
What choices are solutions to equation below x^-7x=-24/4
RUDIKE [14]
-24/4=-6
x^-7x+6=0
(x-6)(x-1)=0
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8 0
2 years ago
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