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swat32
3 years ago
7

Solve for x in the equation x^2+4x-4=8

Mathematics
1 answer:
zzz [600]3 years ago
6 0
First, you would do x^2+4x-8=0  Then you factor so <span><span>(<span>x−2</span>)</span><span>(<span>x+6</span>)</span></span>=<span>0. The answer is
 x=2, and x=-8.</span>
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Suppose that the batting averages or AVG (hits per at-bat) of all players in the AAA baseball league are normally distributed wi
bulgar [2K]

Answer:

0.1

Step-by-step explanation:

Solving using empirical rule formula

95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

Hence, the lower bound 95% =

μ - 2σ

Mean = 0.2

Standard deviation of 0.05

= μ - 2σ

= 0.2 - 2(0.05)

= 0.2 - 0.1

= 0.1

The lower bound is 0.1

6 0
3 years ago
2) At the store Julie bought a shirt for $23.97, which was 25% off the original price. Which of these should she use to find x,
Scrat [10]

Answer:

0.75x = 23.97

Step-by-step explanation:

The total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75.

5 0
3 years ago
An estate of $613,000 is left to three siblings. The eldest receives 2 times as much as the youngest. The middle sibling receive
Assoli18 [71]

Answer:

Eldest: $298500

Middle: $165250

Youngest: $149250

Explanation:

We can show the siblings like this:

e=2y                  (eldest)

m=16000+y       (middle)

To find the value of y, or the youngest sibling, we use an equation.

2y+16000+y+y=613000

Simplify:

4y+16000=613000

Subtract 16000 on both sides:

4y=597000

Divide both sides by 4:

y=149250

The youngest received $149250.

Knowing this, we can plug in the numbers into the original formulas:

e=2(149250)=298500                 ...or $298500

m=16000+149250=165250         ...or $165250

y=149250                                      ...or $149250

Add all those numbers up, and you reach $613000.

7 0
3 years ago
Help Me, I only have 2 minutes
ehidna [41]

Answer:

6 \frac{2}{13}

3 0
2 years ago
Please solve this question and explain it and how to do it: What is the slope of the line 2 - y = 8x
Schach [20]

Answer:

The slope is : -8/1

Step-by-step explanation:

2-y=8x

We need to get “y” by itself , so subtract “ 2 “ from both sides

-y=8x-2

Then we still have to get “ y” by itself , but it’s Negative “y” now! Divide both sides by “ negative one “ (-y is just like -1y).

-y/-1 = 8x/-1 (-2/-1)  

* I put the -2/-1 on () just to organize it *

y = -8x +2

2: y-intercept

-8: slope

[ y = -8x + 2 ] and this called the y-intercept form .✨


4 0
3 years ago
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