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Over [174]
2 years ago
7

Factorise: 9x^2 –12x+3​

Mathematics
2 answers:
Sholpan [36]2 years ago
8 0

9x^2-12x+3

Answer:

3(x-1)(3x-1)

Multiply the two brackets together

Check answer:

3(3x^2-x-3x+1)

3(3x^2-4x+1)

9x^2-12x+3

Answer is on top

True [87]2 years ago
3 0

Answer:

x=1 or x=1/2

Step-by-step explanation:

9x^2 - 12x +3

9x^2 -(9+3)x+3

9x^2-9x-3x+3

9x(x-1)-3(x-1)

(x-1)(9x-3)

so,

either x-1=0

x=1

or

9x-3=0

9x=3

x=3/9

x=1/2

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A car starts a journey with a full tank of gas. The equation y=16 - 0.05x relates the number of gallons of gas, y, left in the t
GenaCL600 [577]

We are given that a car starts a journey with a full tank of gas. The equation y=16-0.05x relates the number of gallons of gas (y) left in the tank to the number of miles the car has traveled(x).

A. We will find y intercept by substituting x=0 in our equation,

y=16-0.05*0

y=16

Now let us find our x-intercept by substituting y=0 in our equation,

0=16-0.05x

0.05x=16

x=\frac{16}{0.05}=320

Therefore, x-intercept is 320 and y-intercept is 16.

B. Our x-intercept represents that after travelling 320 miles there were 0 or none gallons of gas left in tank.

C. Our y-intercept represents that there were 16 gallons of gas in car tank when car started the journey.


6 0
3 years ago
Which set of numbers does NOT contain 75?
andrey2020 [161]

Answer:

The one that doesn't contain 75

Step-by-step explanation:

uhh don't know

8 0
3 years ago
Read 2 more answers
What is the slope of a line that is parallel to the line joining (7,-5) and (-5,7)
brilliants [131]

Answer:

Step-by-step explanation:

If two lines are parallel then they will have the same slope. So all you need to do is find the slope of the line that joins the two given points. You can use the slope formula \frac{y_2-y_1}{x_2-x_1}. You can also graph the two points and use rise over run. \frac{7-(-5)}{-5-7} =\frac{12}{-12}=-1

8 0
3 years ago
Find the whole amount in each case <br> 32% is 64 mL.
REY [17]

Answer:

It's 200 ml I believe.

Step-by-step explanation:

8 0
2 years ago
(17 Leon uses 3/4 cup water to make a serving of iced tea.
Ksivusya [100]

Answer:

A.) 12 3/4 cups

B.) 117 1/3

Step-by-step explanation:

<u>Part A</u>

If one serving of ice tea contains 3/4 cup of water, how much does 7 serving have?

To answer this, you must multiply 3/4 and 17

17 is the same as 17/1, so multiply the numerators and denominators

17 x 3 = 51

1 x 4 = 4

51/4 = 12 3/4

So, Leon used 51/4 or 12 3/4 cups of water

<u>Part B</u>

If the cooler has 88 servings of tea, how many cups of water does it have?

To solve this, divide 88 by 3/4

Dividing 88 by 3/4 is the same as multiplying 88 by 4/3.

Again, 88 is the same as 88/1 so multiply the numerators and the denominators.

88 x 4 = 352

1 x 3 = 3

352/3 = 117 1/3

So, there are 352/3 or 117 1/3 cups of water in the cooler

I hope this helps!

4 0
3 years ago
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