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Zinaida [17]
3 years ago
7

How do I factor 25n^2 - 16?

Mathematics
1 answer:
wel3 years ago
8 0

Answer:

(5n + 4)(5n - 4)

Step-by-step explanation:

This is the difference of perfect squares.  It follows a pattern of

(ax + b)(ax - b) where a is the square root of 25 and b is the square root of 16.  The square root of 25 is 5, the square root of 16 is 4, so our factored quadratic is

(5n + 4)(5n - 4)

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I need help please reply quickly higher gcse question
nexus9112 [7]

Answer:

105 cm²

Step-by-step explanation:

The figure is composed of a rectangle and a triangle

area of rectangle = 15 × 6 = 90 cm²

area of triangle = \frac{1}{2} bh ( b is the base and h the height )

Here b = 15 - 9 = 6 and h = 11 - 6 = 5 , thus

area of triangle = \frac{1}{2} × 6 × 5 = 3 × 5 = 15 cm²

Total area = 90 + 15 = 105 cm²

5 0
3 years ago
Read 2 more answers
Please help maths homework
kaheart [24]

Answer:

1). -4

2). -12

Step-by-step explanation:

Because algebra

8 0
3 years ago
Any help I don't get this like it's confusing please and thank you!!!!!!
Leya [2.2K]
The way to do this problem is by Spelling HAPPY THANKSGIVING and u put them in order by the lettter to a number.

73,15,41,41,12 16,73,15,33,10,24,17,23,50,23,3317
⬆️ ⬆️
H A P P Y T H A N K S G I V I N G


Hope This Helps
7 0
3 years ago
How do you factor x2 + 2xy + y2 -2^4
UNO [17]

Answer:

try this answer x2 + 2xy + y2 - 16

3 0
2 years ago
Tito receives a weekly salary of ​$450 at an appliance store. He also receives a 4 percent commission on the total dollar amount
Kay [80]
<h2>Hello!</h2>

The answer is:

Tito needs a total of $6500 in sales if he want to receive $710 a week.

The equation is:

TotalAmount=450+Sales*0.04

<h2>Why?</h2>

From the statement we know that his salary is $450 plus a 4% commission on the total amount of all sales he makes.

So, we can write the following equation to determine the total sales in a week if he wants to make a total of $710.

Remember, if we are working with percents, we need to change it to real numbers in order to perform the calculations, we can do it by dividing the percent value into 100.

We have:

TotalAmount=450+Sales*0.04

Now, if he wants to make a total of $710, we have:

750=450+Sales*0.04

750-450=Sales*0.04

Sales=\frac{710-450}{0.04}=6500

We have that Tito needs a total of $6500 in sales if he want to receive $710 a week.

Have a nice day!

3 0
3 years ago
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