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3 years ago

9x2 - 6xy Factorise Fully

1 answer:

4 0

Remember distributive property, but reverse it
ab-ac=a(b-c)
a is a common factor

find common factors
factor each
9x^2=3*3*x*x
6xy=2*3*x*y
common factor is 3*x or 3x

9x^2-6xy=3x(3x)-3x(2y)=3x(3x-2y)

factored form is 3x(3x-2y)

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Convert 240 yards per hour (yd/h) to yards per minute (yd/min).

krek1111 [17]

9514 1404 393

Answer:

4 yd/min

Step-by-step explanation:

Change 1 hour to 60 minutes.

(240 yd)/(1 h) = (240 yd)/(60 min) = 4 yd/min

6 0

2 years ago

John's boss asks him on Friday to work Saturday, he has already worked 40 hours this

padilas [110]

Answer:

$162.64

Step-by-step explanation:

min wage is $20.33 so multiply by 8 and u get 162.64

3 0

2 years ago

The diameter of a quarter is 24.26 mm. Find the area

Vinil7 [7]

R=12.13
A=pi×r²
A=pi×12.13²
A≈462.2442041
A≈462.2 (to the nearest tenth).

So the answer is A≈462.2.

6 0

3 years ago

Lisa is in charge of planning a reception for 3600 people. She is trying to decide which snacks to buy. She has asked a random s

Olenka [21]

Answer:

The expected number of the people at the reception whose favorite snack will be chips is 1152

Step-by-step explanation:

Given

The data in the above table and

Reception = 3600

Required

Predict the number of the people at the reception whose favorite snack will be chips.

The first step is to determine the total number of samples;

$Total = Brownies + Cookies + Chips + Other$

$Total = 32 + 22 + 56 + 65$

$Total = 175$

The next step is to determine the fraction of people whose favorite is chips

$Fraction = \frac{Chips}{Total}$

$Fraction = \frac{56}{175}$

The product of the above fraction and the expected number of people in the reception is the solution to this question;

$Expected\ Number = \frac{56}{175} * 3600$

$Expected\ Number = \frac{56* 3600}{175}$

$Expected\ Number = \frac{201600}{175}$

$Expected\ Number = 1152$

<em>Hence, the expected number of the people at the reception whose favorite snack will be chips is 1152</em>

5 0

3 years ago

Convert 3.212121… into a fraction using variable

seraphim [82]

Answer:

In fraction it is

$\frac{3212121}{1000000}$

<h2>#NoNeedFriends</h2>

3 0

2 years ago

Read 2 more answers