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hammer [34]
3 years ago
8

Factorise 9y^2-66yz+121z^2 plss answer with steps plss

Mathematics
2 answers:
aksik [14]3 years ago
8 0

Answer:

(3y - 11z)2

Step-by-step explanation:

hahaha hello again

kakasveta [241]3 years ago
5 0

Step-by-step explanation:

(3y - 11z)(3y - 11z)

9y^2: 3y 3y

121z^2: 11z 11z

(3y - 11z)(3y - 11z)

9y^2 - 33yz - 33yz + 121z^2

9y^2 - 66yz + 121z^2

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Which ratio is smaller 8 to 2 or 10 to 1
GalinKa [24]

Simplify the ratio 8 to 2 to be 4 to 1

Now compare 4 to 1 and 10 to 1

4 is smaller than 10 so the ratio 8 to 2 is smaller.

5 0
4 years ago
The numbers 1 through 15 are written on cards. One card is chosen at random. Event A is choosing a
lana [24]

Step-by-step explanation:

the probability is always the number of desired cases over the number of all possible cases.

in our situation we have 15 cards.

that is the total possible cases when a random card is chosen.

how many desired cases do we have ?

a number NOT a multiple of 5.

how many are there ?

it is easier to say how many numbers there are being a multiple of 5 : 5, 10, 15

so, 3 numbers out of the 15 are multiple of 5.

that means

15 - 3 = 12 numbers of the 15 are NOT multiples of 5.

so, the probability to draw a card that is not a multiple of 5 is

12/15 = 4/5 = 0.8

the information about event B and even numbers is irrelevant for the question.

6 0
2 years ago
Solve the following inequality for dd. Write your answer in simplest form. −7d−3>2d-10
LUCKY_DIMON [66]

Answer:

  d < 7/9

Step-by-step explanation:

Add 7d +10

  7 > 9d

Divide by 9

  7/9 > d

3 0
3 years ago
Finding the roots (zeros)
GenaCL600 [577]

Answer:

1.5 + 1.3228756555323i

1.5 - 1.3228756555323i

Step-by-step explanation:

y = ax^2 + bx + c

a = 1, b = -3, c = 4

Using the quadractic formula:

\frac{-b±\sqrt{b^2-4ac} }{2a} \\\\= \frac{3±\sqrt{9-4(1)(4)}}{2(1)}\\\\= \frac{3±2.64i}{2}\\\\= 1.5 ±  1.32

Note: Kindly ignore the A in the above solution ^

Hence, there is no real solution. It has complex roots.

<em>Feel free to mark this as brainliest! :D</em>

4 0
3 years ago
Plz help I will mark you brainlist plz ​
Igoryamba

Answer:

No, they can't be the same price

Step-by-step explanation:

There is not a way for them to cost the same amount because they are the same cost per topping.

Hope this helped! :)

4 0
3 years ago
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