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aksik [14]
2 years ago
10

The area of a square is found by squaring one of its sides, (A = s2). A certain square has an area of z2 + 18z + 81. Factor the

trinomial to find a side of the square.
side = z + 27
side = z + 18
side = z + 9
Mathematics
2 answers:
masya89 [10]2 years ago
7 0

Here is your answer

Given area is

z^2 + 18z + 81

= z^2 + 2× z × 9 + 9^2

[using (a+b)^2= a^2 + 2ab + b^2], we get

= (z+9)^2

we know that area of a square is represented by side^2.

So, here

Side of square is

z+9

HOPE IT IS USEFUL

asambeis [7]2 years ago
7 0

Answer: The correct answer is z+9

Step-by-step explanation:

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d1i1m1o1n [39]

Answer:

see below

Step-by-step explanation:

Let's add the amounts earned together to find his total earnings. This is 60 + 84 + 72 + 96 + 48 = $360. If he had $218 left over the skis cost 360 - 218 = $142.

7 0
2 years ago
A rectangular park is 85 yards wide and 120 yards long.
ki77a [65]

Answer:

A=10506.25 Sq.yards

Step-by-step explanation:

Width of the park=85 yds

Lenght of the park=120 yds

Now,

A=L*W

A=120*85

A=10200 square yards. This is the area of your given rectangle.

Now,

P=2(L+W)

P=2(120+85)

P=2(205)

P=410 this is the perimeter of your given rectangle.

Now,

a=410/4=102.5

Now,calculate the area of newly given distance of each side:

A=a^2

A=102.5^2

A=10506.25 Sq. Yards

This is the new area and is larger than the area of the given rectangle which was 10200 square yards.

3 0
3 years ago
Francis earns $3.50 an hour mowing lawns. He also gets a $10.00 a week allowance. Bella earns $5.25 an hour babysitting and spen
Alika [10]
3.5h+10=5.25h-11
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8 0
3 years ago
How do you complete the square to rewrite y= x^ -6x + 15 in vertex form
Vaselesa [24]
Vertex form of a quadratic equation is y=a(x-h)^{2}+k
where (h, k) is the vertex. 

Our aim is to write the expression y=x^{2} -6x+15 in the form 
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y=x^{2} -6x+15

y=x^{2} -2*3*x+15

y=(x^{2} -2*3*x+ 3^{2})-3^{2}+ 15

y=(x-3)^{2}-9+15

y=(x-3)^{2}+6
5 0
3 years ago
PLZ hurry, 20 points for simple Q: Solve 5x + 1 = 2x2 + 9x.
iragen [17]
The answer is:
 
a: 1 = 2(x^2<span> + 2</span>x<span>) 
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d:</span>3 = 2(x + 1)^2

you can tell these are your answer when you solve it.
Hope this helps!
8 0
2 years ago
Read 2 more answers
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