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mr Goodwill [35]
3 years ago
11

Value of xcs3x26² + 500-6​

Mathematics
1 answer:
Arturiano [62]3 years ago
7 0

Answer:

Plzzzz answer fast.....

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an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.​
dolphi86 [110]

Answer:

\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

A_\triangle=\dfrac{bh}{2}

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

<em />

We need a length of a height.

Use the Pythagorean theorem:

leg^2+leg^2=hypotenuse^2

We have:

leg=5,\ leg=h,\ hypotenuse=20

Substitute:

5^2+h^2=20^2

25+h^2=400             <em>subtract 25 from both sides</em>

h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm

Calculate the area:

A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2

8 0
3 years ago
Write a recursive formula for an, the nth term of the sequence 3, -4, -11
yKpoI14uk [10]

Answer:

, 12, 48, 192...

a. Write a recursive formula for the nth term of the sequence

Ans: a(n+1) = 4*a(n)

------------------------------

b. Write a general formula for the nth term of the sequence

a(n) = 3*4^(n-1)

--------------

c. Calculate S10 for this sequence

Geometric sequence with a(1) = 3 and r = 4

----?

Step-by-step explanation:

8 0
3 years ago
Sixty percent of Company A’s employees are considered top performers. Fifty five percent of Company A’s employees are in a rigor
pickupchik [31]
Not exactly. there are still 40 percent of the employees that are not top performers. for all you know those 40 percent could make up the majority of the employees in the training program<span />
5 0
3 years ago
Read 2 more answers
Stephanie surveyed the students in her class to find out their favorite color. her results are in the table. what percent of ste
viktelen [127]
You have to add them all together to get 25. 16 students did not say blue, so you have to divide 16 by 25. 64% did not choose blue
4 0
3 years ago
Evaluate 30 + a - y, let a = 6 and y = 5
yuradex [85]
30 + 6 -5=31
30 +a-y
4 0
3 years ago
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