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expeople1 [14]
3 years ago
15

X^2 -9 = -15 i got decimals please help me

Mathematics
2 answers:
irina1246 [14]3 years ago
7 0
Equation: x² - 9 = -15

Step-by-step solution:

• Move -9 to right side
-> x² = -15 + 9

• Solve
-> x² = -6

• Root of both sides
-> x = √-6
This is wrong because √-1 = imaginary number and it doesn't look like you're dealing with imaginary numbers so check the equation again
olga nikolaevna [1]3 years ago
4 0

Answer:

sqrt 24

Step-by-step explanation:

x^2-9=-15

x^2-9+9=-15+9

x^2=24

x=sqrt 24

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The sides of a square are five to the power of two fifths inches long. How is that written in radical form?
Evgen [1.6K]
Remember
x^ \frac{m}{n}= \sqrt[n]{x^m}
so
5^ \frac{2}{5}= \sqrt[5]{5^2}= \sqrt[5]{25}

5 0
3 years ago
What is the area of the region bounded between the curves y=x and y=sqrt(x)?
erastova [34]

Answer:

\frac{1}{6}

Step-by-step explanation:

y = x     .....(1)

y=\sqrt{x}     .... (2)

By solving equation (1) and equation (2)

x = \sqrt{x}

\sqrt{x}\left ( \sqrt{x}-1 \right )=0

\sqrt{x}=0 or \left ( \sqrt{x}-1 \right )=0

x = 0, x = 1

y = 0, y = 1

A = \int_{0}^{1}ydx(curve)-\int_{0}^{1}ydx(line)

A = \int_{0}^{1}\sqrt{x}dx-\int_{0}^{1}xdx

A = \frac{2}{3}[x^\frac{3}{2}]_{0}^{1}-\frac{1}{2}[x^2]_{0}^{1}

A = \frac{2}{3}-\frac{1}{2}

A = \frac{1}{6}

8 0
3 years ago
Using the figure below, select the pair(s) of supplementary angles. (HINT** they may be more than 1 correct answer)
Dafna1 [17]

Answer:

b), d)

Step-by-step explanation:

Supplementary angles add up to 180 degrees.

4 0
3 years ago
Read 2 more answers
Is 6 over 3 an irrational number
vitfil [10]

Answer:

No, you've already proven it's not irrational by writing it as 6/3.  You get 2.  

Step-by-step explanation:

An irrational number is any number that cannot be written as a fraction.

7 0
3 years ago
The polynomial y = 2x3 + mx2
N76 [4]

Answer:

2x³ + mx² - 13x + n

y = x - 2

x = 2

2(2)³ + m(2)² - 13(2) + n = 0

16 + 4m - 26 + n = 0

4m + n = 10. (1)

y = x - 3

x = 3

therefore 9m + n = -15

solving simultaneously

m = -5, n = 30

m + n = 25

7 0
2 years ago
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