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schepotkina [342]
3 years ago
7

1) Factorise the following polynomials: (i) 9 2 − 66 + 121 2

Mathematics
2 answers:
adoni [48]3 years ago
4 0

Answer:

(3y - 11z)2

Step-by-step explanation:

  1. have a good day
  2. stay safe
  3. have an awesome summer
  4. good luck next year
  5. :)
Nana76 [90]3 years ago
3 0

Answer:

IS IT 92 OR 9 squared

Step-by-step explanation:

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Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres pe
GREYUIT [131]

9514 1404 393

Answer:

  20 minutes

Step-by-step explanation:

The trains are separating at the rate of 80 +70 = 150 km/hour. The time required to be 50 km apart is then ...

  time = distance/speed = (50 km)/(150 km/h) = 1/3 h = 20 minutes

7 0
3 years ago
6.
Degger [83]
Answer: True

---------------------------------

Work Shown:

Follow PEMDAS in reverse to solve for q
22q - 7 < 37
22q - 7+7 < 37+7 ... add 7 to both sides
22q < 44
22q/22 < 44/22 ... divide both sides by 22
q < 2
7 0
3 years ago
The bottom of a rectangular swimming pool has an area of 150 square meters and a perimeter of 50 meters. What are the dimensions
AysviL [449]

The  dimensions of the pool is 15m by10m

<h3>Area and perimeter of rectangle</h3>

A pool is rectangular in nature. If a rectangular swimming pool has an area of 150 square meters and a perimeter of 50 meters, then;

lw = 150

2(l+w) = 50

l + w = 25

where

l is the length

w is the width

From the equation 3

l = 25 - w

Substitute into 1

(25-w)w = 150
25w-w² = 150
w²-25w+150 = 0
w²-10w-15w+150 = 0

Factor

w(w-10)-15(w-10) = 0

w = 10 and 15

l = 150/10 = 15

Hence the  dimensions of the pool is 15m by10m

Learn more on dimension here: brainly.com/question/26740257

#SPJ1

7 0
1 year ago
Hello can someone please help me with this.
Zolol [24]

Answer:

if there is equivalent ratio cookies should be 48

3 0
3 years ago
Suppose a club publishes a newsletter. Expenses are$.50 for printing and mailing each copy, plus$300 total for research and writ
luda_lava [24]

200 copies must be  sold

n= number od newsletters

0,50*n+300=2,00*n

300=1,5*n

Divide both sides by 1,5

200=n

0,50*200+300=2*200

100+300=400

400=400



5 0
3 years ago
Read 2 more answers
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