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Finger [1]
2 years ago
7

How can I solve this quadratic using the square root properly?

Mathematics
2 answers:
Citrus2011 [14]2 years ago
7 0

Answer:

x = <u>+</u>3

Step-by-step explanation:

4x² = 36

sqareroot both side we get,

√4x² = √36

2x = 6

x = 6/2

x = <u>+</u>3

Thus, The answer is <u>+</u>3

<u>-TheUnknown</u><u>S</u><u>cientist</u>

Iteru [2.4K]2 years ago
6 0

Answer:

4x^2 = 36

________ x^2 = 9. square root of 9

4. = 4. x = 3

Step-by-step explanation:

Divide both sides by 4 to isolate the square root.

So, you will end up with x^2 = 9

then take the square root of 9,

square root of 9 is 3.

So x = 3

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Which number line shows the solution set for |p-3|=9?
Mademuasel [1]

Answer:

Option b

p = -6 or p = 12

Step-by-step explanation:

The absolute value is a function that transforms any value x into a positive number.

Therefore, for the function f(x) = |x|  x> 0 for all real numbers.

Then the equation:

|p-3| = 9 has two cases

(p-3) = 9    if h > 3  (i)

-(p-3) = 9    if h < 3 (ii)

We solve the case (i)

p = 9 + 3\\p = 12

We solve the case (ii)

-p +3 = 9\\p = 3-9\\p = -6

Then the solution is:

p = -6 or p = 12

3 0
3 years ago
For the past ten years, Michelle has been tracking the average annual rainfall in Boynton Beach, Florida by recording her data i
Sedbober [7]

Answer:

See explanation

Step-by-step explanation:

The average rainfall when you add all 10 years of rainfall up and divide by 10 is an average of 59.946 inches of rain each year. The equation for the data is y = -0.53x + 64.45, this means that the rainfall is getting less each year at a -0.53 inches of rain each year.

x = year (2004 would be 4, etc)

4 0
3 years ago
In a class where there are a total of 80 pupils, 20 are girls and the remaining
babymother [125]

Answer:

75%

Step-by-step explanation:

First find the number of boys.

80 - 20 = 60

Now find the percentage my taking the number of boys upon the total, times that by 100 which gives the percentage.

\frac{60}{80} × 100 = 75%

8 0
3 years ago
Read 2 more answers
The scatter plot shown gives the relationship between concentration and absorbance of a particular chemical, along with the line
Vesnalui [34]

Answer:

B) 0.24

Step-by-step explanation:

As we plot the point on the best fit line for the concentration of 0.2 the absorbance level predicted should be 0.24.

3 0
3 years ago
40 points! I just need this one, please help
vesna_86 [32]

Answer:

  • C. 3,75 cm

Step-by-step explanation:

<u>Ratio of corresponding sides:</u>

  • CD/BC = BC/AB
  • CD/6 = 6/9.6
  • CD = 6*6/9.6
  • CD = 3.75 cm

Correct choice is C

7 0
3 years ago
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