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AnnyKZ [126]
3 years ago
15

Solve for the variable x in the following equation. x2 = 100 x =±

Mathematics
1 answer:
stellarik [79]3 years ago
8 0

Answer:

x = ±10

Step-by-step explanation:

x^2 = 100

Take the square root of each side

sqrt(x^2) = sqrt(100)

x = ±10

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1 1/4 - 1/3 = 15/24 - ??
ivolga24 [154]

Answer

It is 11/12

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Step-by-step explanation:

6 0
3 years ago
In triangle ACE, P is the centroid, PF = 6 , and AD = 15 15. Find the measures of PC and AP. Enter your answers as numbers.
xxTIMURxx [149]

Answer:

PC = 12 units

AP = 10 units

Step-by-step explanation:

  • The centroid of a triangle is the intersection of the three medians of the triangle
  • Each median connecting a vertex with the midpoint of the opposite side
  • The centroid divides each median into two parts, which are always in the ratio 2: 1 from the vertex

In ΔACE

∵ P is the centroid of it

∴ P divides CF the ratio 2: 1 from C

∴ PC = 2 PF

∵ PF = 6 units

∴ PC = 2(6)

∴ PC = 12 units

∵ P divides AD at the ratio 2: 1 from A

→ That means AD = 2 + 1 = 3 parts, and AP = \frac{2}{3} AD

∴ AP = \frac{2}{3} AD

∵ AD = 15 units

∴ AP = AP = \frac{2}{3} (15)

∴ AP = 10 units

5 0
3 years ago
Randomly selected statistics students of the author participated in an experiment to test their ability to determine when 60 sec
Zanzabum

Answer:

The answer would be: We are 95% confident that the interval from 55.4 seconds to 61.2 seconds actually does contain the true value of μ.

8 0
3 years ago
Help plz nd thank you<br> (true or false questions)<br> 1.) -19-2+54&lt;12x97+-40<br> 2.) x+1=1+x
Anastaziya [24]
Number one is 33 < 1118 so true and number two is infinite solutions so it would be true as well
6 0
3 years ago
The total of a regular polygon's interior angles is 3420°.
DanielleElmas [232]

Step-by-step explanation:

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that is, the number of sides is 21

to get the size of each exterior angle=

360/21

=17.14°

4 0
2 years ago
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