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stiks02 [169]
3 years ago
5

Help fast please!!!!!!!!

Mathematics
1 answer:
MArishka [77]3 years ago
4 0

Step-by-step explanation:

The area is

{x}^{2}  - 110x + 2800 \\  =  {x}^{2}  - 40x - 70x + 2800  \\  = x(x - 40) - 70(x - 40) \\  = (x - 40)(x - 70)

Since the width is

x - 40 \: (feet)

Then, the length will be

x - 70 \: (feet)

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Factor z^2 – 3z – 18. A. (z + 3)(z – 6) B. (z – 3)(z – 6) C. (z + 8)(z – 10) D. (z + 2)(z – 9)
ozzi
Work shown above! Answer would be A!

5 0
3 years ago
Brooke has to set up 70chairs in equal rows for the class talent show.But,there is not room for more than 20 rows. What are the
Zinaida [17]

Answer:

R = rows

C = columns

The chairs will be arranged in a way such that R * C \geq 70

We know that R \leq 20

70 / 20 = 3.5; however, you can't have half of a chair.

So find all the factors of 70 which don't exceed 20.

1, 70

2, 35

<h2>5, 14</h2><h2>7, 10</h2><h2></h2><h2>There are four ways that Brooke can set up the chairs:</h2><h2>5 rows of 14</h2><h2>7 rows of 10</h2><h2>10 rows of 7</h2><h2>14 rows of 5</h2>
3 0
3 years ago
Don’t understand please help
Mazyrski [523]
A is ur answer trust me
7 0
3 years ago
Nishi invests £2200 at 5% interest per year.
lord [1]
I =(2200×5%×3)/100
=3.3
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= 2203.30
I =(2200×5%×5)/100
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6 0
3 years ago
Find all values of x such that sin 2x = sin x and 0 ≤ x ≤ 2π.
jarptica [38.1K]
Hello : 
<span> sin 2x = sin x and 0 ≤ x ≤ 2π.
all solutions : 
2x= x +2k</span>π    or x= π -x +2kπ ..... k in : Z
x = 2kπ  or : x = π/2 + kπ 
but :
 <span>0 ≤ x ≤ 2π
</span><span>all values of x such that sin 2x = sin x and 0 ≤ x ≤ 2π are : 
</span>k = 0 : x=0    , x= π/2
k=1 : x=2 π    , x=3π/2
5 0
3 years ago
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