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const2013 [10]
4 years ago
6

Find the value of x. Picture below

Mathematics
1 answer:
Wittaler [7]4 years ago
3 0

Here a right angled triangle given. We know that one angle of a right angled triangle is 90°.

As the sum of three angles of a triangle is 180°, so we can say the sum of other two angles of a right angled triangle is (180-90)° = 90°.

Here in the figure the other two angles given (2x)^o and (x+15)^o. Sum of these two angles is 90°.

So we can write the equation as,

(2x)+(x+15) = 90

We have to remove the parenthesis now.

2x+x+15 = 90

Now we will add the like terms. Here x and 2x are like terms. By adding them we will get,

3x+15 = 90

To solve it for x, now we have to move 15 to the other side by subtracting it from both sides.

3x+15-15 = 90-15

3x= 90-15

3x= 75

Now to get x, we have to move 3 to the other side, by dividing it to both sides.

(3x)/3 = (75)/3

x = (75)/3

x = 25

We have got the required value of x.

The solution is x= 25.

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8 0
2 years ago
Find the value of X <br> ASAP
Taya2010 [7]
X= 103
180 - 65 = 115
X + 12 = 115
X = 115 - 12 = 103
6 0
2 years ago
Un polígono regular está inscrito en una circunferencia. ¿Qué medida del polígono es igual al radio de la circunferencia?
vlabodo [156]

Answer:

La medida del polígono que es igual al radio de la circunferencia es el segmento de recta comprendido entre el centro geométrico del polígono y cualquiera de sus vértices, cuyo nombre es también <em>radio</em>.

Step-by-step explanation:

La medida del polígono que es igual al radio de la circunferencia es el segmento de recta comprendido entre el centro geométrico del polígono y cualquiera de sus vértices, cuyo nombre es también <em>radio</em>.

4 0
3 years ago
What is the value for y?<br> Enter your answer in the box.<br> y=
serious [3.7K]

Answer:

y =112

Step-by-step explanation:

Given

The attached triangle

Required

Find y

The attached triangle is isosceles; so:

x - 5=34

Also, we have:

y + x - 5 + 34=180 --- angles in a triangle

Substitute: x - 5=34

y + 34 + 34=180

Collect like terms

y =- 34 - 34+180

y =112

5 0
3 years ago
An investment website can tell what devices are used to access their site. The site managers wonder whether they should enhance
lbvjy [14]

Answer: a)  Unimodal and symmetric

b) 0.26

c) 0.038

Step-by-step explanation:

Given: Sample size of investors (n)= 131

True proportion of smartphone users(p)  =26%

a) Since sampling distribution for the sample proportion is approximately normal when n is larger.

Normal distribution is Unimodal and symmetric.

So correct option : Unimodal and symmetric

b)  mean of this sampling​ distribution = p = 0.26

c)  standard deviation of the sampling​distribution = \sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.26\times (1-0.26)}{131}}=\sqrt{0.00146870229008}

=0.0383236518364\approx0.038

6 0
3 years ago
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