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nexus9112 [7]
4 years ago
15

If x to the second power equals 20 what is the value of x?

Mathematics
2 answers:
fiasKO [112]4 years ago
5 0

Hey there!


Let's set up an algebraic equation to represent this problem:


x^2=20


In order to get rid of the squared, we need to take the square root of both sides, therefore, our answer is:


x= \sqrt{20}


Your answer is the square root of 20.


Hope this helps!

zzz [600]4 years ago
5 0

square root 20 = 4.472135955
So x=4.472135855

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Find the angle between the hands of a clock at 5:15<br><br> A 60<br> B 67.5<br> C 75
Viktor [21]

Answer:

Option B is correct.

67.5 degree

Step-by-step explanation:

To find the angle between the hands of a clock.

Given that:

Hands of a clock at 5 : 15.

We know that:

A clock is a circle and it always contains 360 degree.

Since, there are 60 minutes on a clock.

\frac{360^{\circ}}{60 minutes} = 6^{\circ} per minutes

so,  each minute is 6 degree.

The minutes hand on the clock will point at 15 minute,

then, its position on the clock is:

(15) \cdot 6^{\circ} = 90^{\circ}

Also, there are 12 hours on the clock

⇒Each hour is 30 degree.

Now, can calculate where the hour hand at 5:00 clock.

⇒5 \cdot 30 =150^{\circ}

Since, the hours hand is between 5 and 6 and we are looking for 5:15 then :

15 minutes is equal to \frac{1}{4} of an hour

⇒150+\frac{1}{4}(30) = 150+7.5 = 157.5^{\circ}

Then the angle between two hands of clock:

⇒\theta = 150.75 -90 = 67.5^{\circ}

Therefore, the angle between the hands of a clock at 5: 15 is: 67.5 degree.

4 0
3 years ago
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Taya2010 [7]

Answer:

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Step-by-step explanation:

let the 2 parts be x and y, then

x + y = 29 → (1) and

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From (1) → x = 29 - y → (3)

substitute x = 29 - y into (2)

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divide all terms by 2

y² - 29y + 208 = 0

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(y - 13)(y - 16) = 0

equate each factor to zero and solve for y

y - 13 = 0 ⇒ y = 13

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substitute these values into (3)

x = 29 - 13 = 16 and x = 29 - 16 = 13

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