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Mashutka [201]
3 years ago
7

Factorise the equation 9x^2 - 4

Mathematics
1 answer:
Wittaler [7]3 years ago
5 0

Answer:

Step-by-step explanation:

a² - b² = (a +b)(a - b)

9x² - 4 = (3x)² - 2²

            = (3x + 2 )(3x - 2)

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Write the percent as a fraction or mixed number in simplest form.<br> 12%
Anettt [7]
In order to convert percentage form into fraction, divide it by 100

So, 12% = 12/100 = 6/50 = 3/25

In short, Your Answer would be: 3/25

Hope this helps!
7 0
3 years ago
Read 2 more answers
Helpity help??????????????????????????????
Nuetrik [128]
Answer:
Equation: 8=4b
b=2
Explanation:
The green line equals 8 and the black time equals 2b+2b. So to form an equation where the green line equals the black line it would look like: 8=2b+2b
8 being the green line
2b+2b being the black line
Then the directions tell us to combine like terms, like terms are terms that are the same such as 2b in this problem, and to combine them means to add them together.
So, 2b+2b= 4b
So the answer is, 8= 4b

In order to solve this equation divide both sides by 4.
Which leaves you with: 8/4= b
Now solve 8/4:
Which gives you:
b=2
5 0
3 years ago
4 &lt; x &lt; 7<br> Please give me a proper explanation.
sesenic [268]

An explanation for 4 < x < 7 is that 4 is less than and x is less than 7.

<h3>How to explain the information?</h3>

The mathematical expression that is given is 4 < x < 7. It should be noted that this implies that 4 is less than and x is less than 7.

In this case, the appropriate values that can fit x in this situation will be 5 and 6.

Learn more about less than on:

brainly.com/question/816726

#SPJ1

6 0
2 years ago
Teddy has two piggy banks. The difference in the amount of money between the two banks is no more than $10. One piggy bank has $
just olya [345]

Answer:

2.69≤x≤17.31

Step-by-step explanation:

Lety the amount in the other Piggy bank be x.

The difference in the amount of money between the two banks is no more than $10 is expressed as;

|x-7.31| ≤ 10

The value in the modulus sign can be positive or negative

If positive;

x-7.31 ≤ 10

x ≤ 10+7.31

x≤17.31

If negative

-(x-7.31) ≤ 10

-x+7.31 ≤ 10

-x ≤ 10-7.31

-x ≤ 2.69

Multiply both sides by -1

x ≥ -2.69

The compound inequality representing the amount of money in the other bank is -2.69≤x≤17.31

4 0
2 years ago
The farmer needed to fertilize 520 apple trees. He fertilized 20
grigory [225]

Answer: 40 is the answer

Step-by-step explanation:

Farmer fertilized 20  trees per day for 10 days=20*10=200

total trees- fertilized tree=leftover trees

520-200=left over trees

320=left over trees

per day fertilized tree=left over trees /8

per day fertilized trees=320/8

per day fertilized trees=40

If this answer help you mark me brainlist

3 0
3 years ago
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