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Naddika [18.5K]
3 years ago
7

(08.06)

Mathematics
1 answer:
Greeley [361]3 years ago
6 0

Answer:

(x-7)(x+7)

Step-by-step explanation:

x^2 -49

This is the difference of squares

x^2 -7^2

We know that a^2 -b^2 = (a-b)(a+b)

(x-7)(x+7)

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Select the correct answer.
maksim [4K]

Answer: B

Step-by-step explanation:

5 0
2 years ago
-7x-x-1=? Help please
bonufazy [111]
The answer is 8x-1 I believe

5 0
3 years ago
In science class, the students observed 24 of the 300 frogs from the local aquarium. If 6 of the frogs observed had spots, how m
Alona [7]

Answer:

225 frogs

Step-by-step explanation:

Total population of frogs = 300 frogs.

Observed population of frogs = 24

6 of the 24 observed frogs had spots

Which means , the number of frogs that did not have spots = 24 - 6 = 18 frogs.

We were told to find how many of the total population can be predicted to NOT have spots. We would form a proportion.

If 24 frogs = 18 frogs with no spots

300 frogs = Y

Cross multiply

24Y = 300 × 18

Y = (300 × 18) ÷ 24

Y = 5400 ÷ 24

Y = 225 frogs.

This means out of 300 frogs, 225 frogs do not have spots.

Therefore, the total population that can be predicted to NOT have spots is 225 frogs.

the total population can be predicted to NOT have spots

3 0
2 years ago
someone what is the answer to this. I got it wrong and what to do what the answer really is and please be 100 sure with your ans
zubka84 [21]
That would be 12<x
Its not 12 > x because that means that 12 is greater than x which is the same thing as x < 12.
Hope it helps
6 0
3 years ago
What would the class size be if 30 people represent 40% of the class?
anastassius [24]

Answer:

110 students

Step-by-step explanation:

%40 Divide 30

30 divided by %40 is 0.75

SO there is 60% left

%60 divided by 0.75

That is 80

80 + 30 =

110

6 0
3 years ago
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