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nordsb [41]
3 years ago
11

Factorise fully X^2 - 25​

Mathematics
1 answer:
saul85 [17]3 years ago
6 0

Answer:

(x+5)(x-5)

Step-by-step explanation:

x^2-25 = x^2 - 5^2 = (x+5)(x-5)

rule: a^2 - b^2 = (a+b)(a-b)

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A number cube is rolled 450 times and the
EleoNora [17]

Answer:

A.) 0.33

Step-by-step explanation:

7 0
3 years ago
5/7−(−1/7) please answer fast I need iittt
Taya2010 [7]

Answer: \frac{6}{7}

Step-by-step explanation:

\frac{5}{7}-\left(-\frac{1}{7}\right)

Once you take off the parenthesis, your sign should change from negative to positive.

\frac{5}{7}-\left(-\frac{1}{7}\right)=\frac{5}{7}+\frac{1}{7}\\\\\frac{5}{7}+\frac{1}{7}

The fractions now both have the same denominator. Thus, we can add the numerators.

\frac{5+1}{7}\\\\5+1\\\\6=\frac{6}{7}

Therefore, \frac{5}{7}-\left(-\frac{1}{7}\right)=\frac{6}{7}

5 0
3 years ago
If i ate 20 candy bars and 40 more what do i have
DaniilM [7]

Answer:

Diabetes

Step-by-step explanation:

By consuming that much candy your blood sugar levels would skyrocket causing you to get diabetes.

3 0
3 years ago
The front door of a house is 80 inches tall what is the volume of the door
liberstina [14]

Answer:

I think it is 36 inches times 80

4 0
3 years ago
Wich set of angles measure could be the measure of the interior angles of a triangle? 90,42 and 58. 60,60 and 60. 100,48 and 43.
4vir4ik [10]

Answer:

60°,60° and 60°.

Step-by-step explanation:

The sum of the interior angle of a triangle

=180°

So, let us test measured sets to get which of them could be the interior angles of a triangle.

The sum of the first measured set

= 90° + 42° + 58°

=190°

Also, the sum of the second measured set

= 60°+ 60° + 60°

=180°

The sum of the third measured set,

= 100°+ 48° + 43°

=191°

Finally, the sum of the fourth measured set

= 31° + 75°+ 70°

=176°

We can clearly conclude that, the measured set 60°,60°and 60° could only be the the set of interior angles of a triangle. Since it is the only set that add up to 180°

6 0
3 years ago
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