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alina1380 [7]
3 years ago
11

Which would be the best method to use to solve the following equation. Explain your reasoning.

Mathematics
1 answer:
lozanna [386]3 years ago
5 0

Answer:

x = ±8

Step-by-step explanation:

The given equation is :

3x^2-192=0

We can use the Square root Property to solve it.

Adding 192 both sides,

3x^2-192=0\\\\3x^2=192

Dividing both sides by 3.

x^2=64\\\\x=\sqrt{64} \\\\x=\pm 8

So, the value of x is equal to +8 and -8.

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GEOMETRY HELP ASAP I'M FAILING. I did the first half now i cant figure this out!!?
Shalnov [3]
OK, so;
BDE and BED are congruent because the opposite sides are both congruent
To find BDE and BED you must subtract 66 degrees from 180 degrees.
You are then left with 114 as the sum of both the angles you need to find
Since they are congruent, all you need to do is divide by two
114/2=57 degrees for both BDE (a) and BED(b)
Now for angle A and C;
This is easy because they are both congruent to the first two!
So basically, all of question four is "57 degrees"
 Sadly for number 5 i did not understand the question :"(
For 6 tho;
AC is parallel to DE because angle C is congruent to angle BED 
All the others can be ruled out 
For 7;
BD is half the length of AE, so:
 4x+20=2(3x+5)
4x+20=6x+10
20=2x+10
10=2x
x=5
 This means BD is 20 bc
3(5)+5
15+5
20
 And AE is 40 bc
20X2=40
or...
4(5)+20



5 0
2 years ago
In a wildlife park, there were 18 gray wolves. After three years, there were 27 gray wolves. What is the percent gain?
natulia [17]
27-18=9 (difference between)
9/18=0.5 (9 as a percentage of original as a decimal)
0.5x100=50 (as a percentage)

50% increase
4 0
2 years ago
Read 2 more answers
Kaylee put a rectangular sticker on her notebook. The sticker is 1 inch wide and 5 inches long. What area of the notebook does t
kati45 [8]

Answer:

5

Step-by-step explanation:

The area of a rectangle is given by base x height = 1 x 5 = 5

6 0
2 years ago
(14.14) larry reads that 1 out of 6 eggs contains salmonella bacteria. so he never uses more than 5 eggs in cooking. if eggs do
melomori [17]

we know that

The probability that "at least one" is the probability of exactly one, exactly 2, exactly 3, 4 and 5 contain salmonella.

The easiest way to solve this is to recognise that "at least one" is ALL 100% of the possibilities EXCEPT that none have salmonella.

If the probability that any one egg has 1/6 chance of salmonella

then

the probability that any one egg will not have salmonella = 5/6.

Therefore

for all 5 to not have salmonella


= (5/6)^5 = 3125 / 7776

= 0.401877 = 0.40 to 2 decimal places


REMEMBER this is the probability that NONE have salmonella


Therefore

the probability that at least one does = 1 - 0.40

= 0.60


the answer is

0.60 or 60%

6 0
3 years ago
Write a proof that shows how 45 and 4.5 have a factor of 10
vovikov84 [41]

Answer:

When you move the decimal point one place to the left, you are moving the second by a factor of 10.

Step-by-step explanation:

3 0
3 years ago
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