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Contact [7]
3 years ago
9

25 points! Please help and solve step by step. Solve for x and check for extraneous solutions.

Mathematics
2 answers:
liberstina [14]3 years ago
6 0

Answer:

No real solutions

Imaginary/complex solutions:

x = 2 +/- 16sqrt(2)i

Step-by-step explanation:

(X-2)^2/3 + 13 = 5

(X-2)^2/3 = -8

(X - 2)² = (-8)³

X - 2 = +/- sqrt(-512)

No real solution

x = 2 +/- 16sqrt(2)i

(2 +/- 16sqrt(2)i - 2)^⅔ + 13 = 5

[(+/- 16sqrt(2)i)²]^⅓ + 13 = 5

(-512)^⅓ + 13 = 5

-8 + 13 = 5

5 = 5

qwelly [4]3 years ago
3 0

Answer:

no solutions

Step-by-step explanation:

(X-2)^2/3 + 13 = 5

Subtract 13 from each side

(X-2)^2/3 + 13-13 = 5-13

(x-2) ^2/3 = -8

Raise each to the 3/2 power

(x-2) ^2/3  ^3/2= -8^3/2

(x-2) = (-512) ^1/2

We cannot take the square root of a negative number and remain in the real number system

There are no solutions

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0.23x + 1.47 = 0.37x – 1.05
Artyom0805 [142]

0.23x+1.47=0.37x-1.05

-1.47 -1.47

0.23x=0.37x-2.52

-0.37 -0.37

-0.14x=-2.52

/-0.14 /-0.14

x=18

Hope it helps!

4 0
3 years ago
Find the slope of the line passing through the points (4, 4) and (4, - 4) .
sveticcg [70]

Answer:

  • Slope = undefined

Step-by-step explanation:

<u>We know that:</u>

  • Slope Formula = y₂ - y₁/x₂ - x₁

<u>Solution:</u>

  • y₂ - y₁/x₂ - x₁ = -4 - 4/4 - 4
  • => -8/0 = undefined

Since the slope of the line is un-defined, the line is vertical. Please look at my graph to understand better.

3 0
3 years ago
What is the area of a rectangle with a length of 3 cm and width of 4.5 cm
____ [38]
13.5 because 4.5 times 3 is 13.5

3 0
3 years ago
In △ABC, m∠A=16°, m∠B=49°, and a=4. Find c to the nearest tenth.
xenn [34]

Answer:

= 8.33 inches

Step-by-step Explanation

First add 49 + 16, which equals 65, and subtract that result from 180, since a triangle equals 180 degrees and you find out angle C is equal to 115 degrees.

Now using the formula sinA/a = sinB/b = sinC/c, plug in values and you'd get the equation sin49 x 10/sin115. After solving the equation you'd get about  8.32729886047258 inches.

= 8.33

7 0
3 years ago
Read 2 more answers
2) Brian purchased pens for 75 cents each and pencils for 40 cents each he bought total of 22 writing utensils for $11.95. How m
d1i1m1o1n [39]

Answer:

13 pencils.

Step-by-step explanation:

Let x be the pens and y be the pencils

Given:

Brian purchased pens for 75 cents each and pencils for 40 cents each he bought total of 22 writing utensils for $11.95.

Total pens and pencils is 22

So, x+y=22----------------(1)

And he bought all utensils for $11.95. and each pen for 75 cents and pencils for 40 cents.

0.75x+0.40y=11.95------------(2)

solve equation 1 and equation 2 for x and y.

From equation 1.

x+y=22

y=22-x----------------(3)

put y value in equation 2.

0.75x+0.4(22-x)=11.95

0.75x+0.4\times 22-0.4x=11.95

0.75x+8.8-0.4x=11.95

0.75x-0.4x=11.95-8.8

0.35x=3.15

x=\frac{3.15}{0.35}

x=9

Now substitute x value in equation 3.

y=22-9

y=13

So, he buy 13 pencils.

5 0
3 years ago
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