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Lena [83]
3 years ago
6

If x2 = 30, what is the value of x? A. ±60 B. ±15 C. ±square root of 30 D.±square root of 15

Mathematics
1 answer:
anygoal [31]3 years ago
6 0

Answer:

  C.  ±square root of 30

Step-by-step explanation:

Apply the square root function to both sides of the equation:

  \sqrt{x^2}=\sqrt{30}\\\\|x|=\sqrt{30}\\\\x=\pm\sqrt{30}

_____

The absolute value equation has two solutions. They match choice C.

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Jules ran 2/3 miles. Miles ran 5/8 more than Jules. How many miles did Miles run?
kifflom [539]
2/3 is equivalent to 16/24
and 5/8 is equivalent to 15/24 miles
15/24+16/24= 31/24

31/24 simplifies to 1 6/24
Which simplifies down to 1 1/6

Miles ran 1 and 1/6 miles
3 0
3 years ago
Read 2 more answers
Use geometric series to find the fraction of 0.8967898989
Sliva [168]

I'm guessing the repeating part is 89 at the end, so that

x=0.8967\overline89\implies10^4x=8967.\overline{89}

Then

10^4x=8967+\displaystyle89\sum_{i=1}^\infty\frac1{100^i}

10^4x=8967+89\left(\dfrac1{1-\frac1{100}}-1\right)

10^4x=8967+\dfrac{89}{99}

x=\dfrac{8967}{10^4}+\dfrac{89}{99\cdot10^4}

x=\dfrac{443911}{495000}

###

An arguably quicker way without using geometric series:

10^4x=8967.\overline{89}

10^6x=896789.\overline{89}

10^6x-10^4x=887822

x=\dfrac{887822}{10^6-10^4}=\dfrac{443911}{495000}

8 0
3 years ago
Which figure represents the image of parallelogram
Xelga [282]

Answer:

correct choice is option 3 - figure C.

Step-by-step explanation:

When you reflect a point across the line y = x, the x-coordinate and y-coordinate change places. This gives you such reflection rule:

From the diagram:

L(3,1), M(4,3), N(5,3) and P(4,1).

Using the reflection rule, you can find coordinates of image points:

L'(1,3), M'(3,4), N'(3,5) and P'(1,4).

As you can see, these are coordinates of vertices of the figure C.

<em>on e2020 its c </em>

<em>give brainliest if this helps please (;</em>

4 0
3 years ago
Read 2 more answers
The focus of the parabola -40x = y2 is:<br><br> (-10, 0)<br> (0, -10)<br> (0, 10)<br> (10, 0)
Luda [366]

Answer:

Option A: (-10,0)

Step-by-step explanation:

The given equation of the parabola is in the form of y^2=4ax where the focus is located at (a,0). Therefore, the focus of the parabola is (-10,0).

3 0
2 years ago
What is the fractional equivalent of 0.2323...? 23/99 23/999 2/9
lana [24]
It is equivalent to 23/99 but not for the rest.

As the denominator gets larger, the decimals gets smaller.
eg. 23/999 = 0.023232323...

As you can see , it is 0.02 now so it is not equivalent to 0.232323 as it is 0.2
7 0
3 years ago
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