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nalin [4]
3 years ago
13

Factor completely 25x2 − 36.

Mathematics
2 answers:
Ivenika [448]3 years ago
6 0
25x² - 36
25x² + 30x - 30x - 36
5x(5x) + 5x(6) - 6(5x) - 6(6)
5x(5x + 6) - 6(5x + 6)
(5x - 6)(5x + 6)

The answer is C.
kondaur [170]3 years ago
5 0

Answer:

Option (3) is correct.

The factored form of given equation 25x^2-36 is (5x+6)(5x-6)

Step-by-step explanation:

Given : equation 25x^2-36

We have to factorize the given equation completely.

Consider the given equation 25x^2-36

Using algebraic identity a^2-b^2=(a+b)(a-b)

We have ,

25x^2-36 can be written as (5x)^2-(6)^2

Applying above idenity, we have,

(5x)^2-(6)^2=(5x+6)(5x-6)

Thus, the factored form of given equation 25x^2-36 is (5x+6)(5x-6)

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Compare 9 * 10^4 to 3 * 10^2. (A) 9 * 10^4 is 3 times larger than 3 * 10^2 (B) 9 * 10^4 is 30 times larger than 3 * 10^2 (C) 9 *
dexar [7]

Answer:

9 * 10^4 is 300 times larger than 3 * 10^2

Step-by-step explanation:

Here, we want to compare the two figures and give the verdict on how big they are

as we can see, by squaring the second figure, we get the first

Mathematically, what we are saying is that;

(9 * 10^4) = (3 * 10^2)^2

So

basically, the difference between the two is to the tune of (3 * 10^2)

Hence we can conclude that the first number is 300 times bigger than the second number

7 0
2 years ago
A box contains 84 chocolates, of which 63 are dark chocolates. The rest are milk chocolates. What is the ratio of milk chocolate
loris [4]

Answer: 21:84

Explanation:

84-63=21, and then just do 21:84 lol

3 0
2 years ago
Find the measure of angle Y
Musya8 [376]

Answer:

∠y=60°

Step-by-step explanation:

Question says to find the measure of the angle Y.

We have been given a picture of triangle XYZ. All angles are marked with same sign so that indicates that all three angles are equal.

∠x = ∠y = ∠z...(i)

We know that sum of all three angles of the triangle is always 180°.

So we can write:

∠x+∠y+∠z=180°

∠y+∠y+∠y=180°  {using equation (i) }

3∠y=180°

divide both side by 3

∠y=60°

Hence final answer is the measure of angle y is 60 degree.

8 0
3 years ago
1: 1/2 km equals to how many metres?
VMariaS [17]
1.
km=kilometers
kilo=1000
1 km=1000meters
so
1/2km= 1/2 times 1000=1000/2=500meters


2. 1/4 km=1000/4=250 meters

3. 1/5 km=1000/5=200 meters

4. 2/5 km=2000/5=400 meters

5. 3/4 km=3000/4=750 meters

6. 1/8 km=1000/8=125 meters
7 0
2 years ago
91, 77, 90, 85, 93, 72, 88, 82, 87 <br> what’s the mean?
yan [13]

Answer:

The mean would be 85 :)

Step-by-step explanation:

8 0
2 years ago
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