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iris [78.8K]
3 years ago
5

Which is a factor of 144 − 49x2? HELP PLEASE

Mathematics
2 answers:
rewona [7]3 years ago
8 0
(12 + 7x)(12 - 7x) the answer to the question
Andreyy893 years ago
6 0

Answer:

Factors (12 - 7x) ( 12 +7x ) .

Step-by-step explanation:

Given  : 144 − 49x².

To find : Which is a factor .

Solution : We have given 144 − 49x²

We can write 144 = (12)².

                       49 = (7)².

Then  (12)² - (7x)².

By the formula (a)² - (b)² = (a-b) ( a+b) .

Here, a = 12 ,  b = 7x

 (12)² - (7x)² = (12 - 7x) ( 12 +7x ) .

Therefore, Factors (12 - 7x) ( 12 +7x ) .

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the ratio of clown fish to angel fish at a pet store is 5: 4. the ratio of angle fish to goldfish is4:3 there are 60 clown fish
denis23 [38]
Clown fish: angel fish    5:4
angle fish: gold fish      4:3

(60): angel fish=5:4
(5)(12)=60
(4)(12)=48 angel fish

(48): gold fish=4:3
(4)(12)=48
(3)(12)=36 gold fish

3 0
3 years ago
Find the number of permutations in the word fission <br> 1020<br> 1500<br> 1260<br> 2400
irina [24]
There are 7 letters in fission, which we'll use as a factorial in the numerator. Of those 7 letters, there are two I's and two S's. To account for these repeating letters, we'll use the factorials of how many times the letters repeat and plug them into the denominator.

The factorial of 7 should be your numerator, and two factorials of 2 should be your denominator:

\frac{7!}{2! \times 2!} =  \frac{5040}{2 \times 2} =  \frac{5040}{4} =  1260

There are 1260 different permutations of the word fission.
5 0
3 years ago
If the simple interest on 3,000​$ for 3 years is ​450$​, then what is the interest​ rate?
Artyom0805 [142]

Answer/Step-by-step explanation:

The interest rate is 15% for every 3 years. To find the interest rate subtract the money from the total. Then, divide the total from the difference. Now subtract the quotient from 100 and multiply it by 100 to fin the percentage.

3000 - 450 = 2550

2550 ÷ 3000 = 0.85

100 - 0.85 = 0.15

0.15 x 100 = 15%

4 0
3 years ago
HELP PLEASE REEEEEEEEEEEE!! Note: Enter your answer and show all the steps that you use to solve this problem in the space provi
Fynjy0 [20]

Answer:

Step-by-step explanation:

480 = 100%

72  =   ?       you can find it doing  (72(100))/480

72(100)= 7200      

7200/480= 15    

the answer is 15%

have a nice day :)

8 0
3 years ago
Select all the expressions that are equivalent to 8 - X.
oee [108]

answer is :

B, C, G

hope this helps

4 0
3 years ago
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