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timama [110]
3 years ago
10

X^(2)+x^(2)=128 or x^2+x^2=128

Mathematics
2 answers:
LenaWriter [7]3 years ago
7 0

Answer:

8 =6 since 8 squared is 64 and 64 +64 or 64 times 2 is 128 that’s is your answer.

Step-by-step explanation:

Dvinal [7]3 years ago
4 0

Answer:

Step-by-step explanation:

x^2 + x^2 = 128                 Normally you don't do this but rewrite the question

1x^2 + 1x^2 = 128

You actually do use 1 + 1 = 2 First time I've ever done that.

2x^2 = 128                         Divide by 2

2x^2/2 = 128 / 2

x^2 = 64                            Take the square root of both sides

sqrt(x^2)= sqrt(64)

x = 8

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A circle with area 16pi has a sector with a central angle of 8/5pi radians. What is the area of the sector?
lianna [129]

Answer:

The area of the sector is 12.8\pi\ units^2

Step-by-step explanation:

we know that

The area of a complete circle (16π units^2) subtends a central angle of 2π radians

so

using proportion

Find out the area of a sector , if the central angle is equal to 8π/5 radians

\frac{16\pi}{2\pi}=\frac{x}{(8\pi/5)}\\\\x=8(8\pi/5)\\\\x= 12.8\pi\ units^2

4 0
4 years ago
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Charlene is 8 years older than Aaron. The sum of their ages is 44. What are<br> their ages?
yKpoI14uk [10]

Answer: charlene:52, aaron:44

Step-by-step explanation:

Add 8 to aarons age and you find your answer

4 0
3 years ago
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Given f(x) = 2 / x-3 , find f(4)
Montano1993 [528]

Option #1:

f(x)=\frac{2}{x-3}

f(4), this means that x = 4

To find f(4), substitute/plug in 4 into "x" in the function:

f(x)=\frac{2}{x-3}      Plug in 4 into "x" since x = 4

f(4)=\frac{2}{4-3}

f(4)=\frac{2}{1}

f(4) = 2

Option #2:

f(x)=\frac{2}{x} -3

f(4), this means that x = 4

To find f(4), substitute/plug in 4 into "x" in the function:

f(x)=\frac{2}{x} -3

f(4)=\frac{2}{4} -3    To combine fractions, they need to have the same denominator. Multiply -3 by (\frac{4}{4} ) so that they have the same denominator.

f(4)=\frac{2}{4} -3(\frac{4}{4} )

f(4)=\frac{2}{4} -\frac{12}{4}      Combine the fractions

f(4)=\frac{-10}{4}      Simplify the fraction

f(4)=-\frac{5}{2}

4 0
3 years ago
A
postnew [5]

Answer:

see explanation

Step-by-step explanation:

Complementary angles sum to 90°, thus

∠A ∠B = 90 ← substitute values

5x - 27 + 4x - 27 = 90, that is

9x - 54 = 90 ( add 54 to both sides )

9x = 144 ( divide both sides by 9 )

x = 16

Hence

∠A = 5x - 27 = (5 × 16) - 27 = 80 - 27 = 53°

∠B = 4x - 27 = (4 × 16) - 27 = 64 - 27 = 37°

4 0
3 years ago
Factor out the gcf then factor the remaining trinomial.
kenny6666 [7]

Answer:

6(x - 1)(3x + 1)

Step-by-step explanation:

Given

18x² - 12x - 6 ← factor out 6 from each term

= 6(3x² - 2x - 1) ← factor the quadratic

Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term

product = 3 × - 1 = - 3 and sum = - 2

The factors are - 3 and + 1

Use these factors to split the x- term

3x² - 3x + x - 1 ( factor the first/second and third/fourth terms )

= 3x(x - 1) + 1(x - 1) ← factor out (x - 1)

= (x - 1)(3x + 1)

Hence

18x² - 12x - 6 = 6(x - 1)(3x + 1) ← in factored form

8 0
3 years ago
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