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OverLord2011 [107]
3 years ago
8

X2 - 7x + 9 =0 please leave answer in surf form and simplify ​

Mathematics
2 answers:
scZoUnD [109]3 years ago
8 0

Answer:

Using quadratic formula again :)

777dan777 [17]3 years ago
4 0

Answer:

x = \frac{7}{2} ± \frac{\sqrt{13} }{2}

Step-by-step explanation:

Given

x² - 7x + 9 = 0 ( subtract 9 from both sides )

x² - 7x = - 9

Solve using the method of completing the square

add ( half the coefficient of the x- term)² to both sides

x² + 2( - \frac{7}{2} )x + \frac{49}{4} = - 9 +

(x - \frac{7}{2} )² = \frac{13}{4} ( take the square root of both sides )

x - \frac{7}{2} = ± \sqrt{\frac{13}{4} } = ± \frac{\sqrt{13} }{2} ( add

x = \frac{7}{2} ± \frac{\sqrt{13} }{2} = \frac{7+/-\sqrt{13} }{2}

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The frequency table shows the results of tossing a ball 24 times into four colored sections on a carnival game. Based on the dat
Zanzabum

Answer:

See the explanation

Step-by-step explanation:

Ball is tossed 24 times

So the total number of outcomes (tosses) = N = 24

The ball lands in Blue section 3 times out of 24 tosses. So it becomes 3/24

The ball lands in Green section 5 times out of 24 tosses. So it becomes 5/24

The ball lands in Red section 12 times out of 24 tosses. So it becomes 12/24

The ball lands in Yellow section 4 times out of 24 tosses. So it becomes 4/24

Now we have to find how many times will the ball most likely land in the yellow section when it’s tossed 200 times. So the total number of outcomes here is N = 200. The favorable outcome here is that the ball lands in Yellow section. So we use the frequency table above for yellow section:

Yellow / Total tosses

4/24 = x/200

4*200 = 24x

800 = 24 x

24 x = 800

x = 800 / 24

x = 33.3

So ball most likely land in the yellow section 33 times when it’s tossed 200 times So it becomes 33/200 = 0.165 or 10.65% probability that ball will land in yellow section.

8 0
3 years ago
Read 2 more answers
Find the measure of FEG 25,65,80,90
lozanna [386]

Answer:

First, you have to set 5x equal to (3x+10). They are vertical angles and therefore congruent.

5x = 3x+10              The variable should only be on one side of the equation,

5x - 3x = 10             Therefore subtract 3x from both sides

2x = 10                     Divide by 2 on both sides.

x = 5

We're not done yet, since we've found the x-value we have to solve for ∠GEC.

∠GEC = 3x+10 = 3(5)+10 = 15+10 = 25°

∠GEC and ∠FEG form a right angle. This means that the sum of the two angles is 90°

90° = 25° + x            In this case, we're using "x" to solve for ∠FEG

90-25 = x                  We subtract 25 from both sides to get the variable by itself.

65° = x

∠FEG = 65°            The Answer is B

Step-by-step explanation:

7 0
3 years ago
Convert 81/4 to a decimal
Tomtit [17]
Hello.

81/4 as a decmail would be 

20.25

To convert this simple fraction to a decimal, just divide the numerator (81) by the denominator (4): 81 ÷ 4 = 20.25. So,

81/4 = 20.25

Rounded values:

<span><span>81/4 = 20 rounded to the nearest integer</span><span>81/4 = 20.3 rounded to 1 decimal place.

Have  a nice day</span></span>
7 0
4 years ago
Read 2 more answers
*** Please Help***<br><br> Find the 15th term in the pattern 6 ∙ n^2.
yawa3891 [41]
a_{15}=6\cdot15^2=1350
8 0
3 years ago
I’m trying to find the 6 ratios in this.
dlinn [17]

Our 6 ratios:

10/24

10/26

24/26

24/10

26/10

26/24

5 0
3 years ago
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