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Oliga [24]
2 years ago
8

What is the factorization of 49b2 − 81?

Mathematics
1 answer:
Leto [7]2 years ago
6 0
(7b-9)(7b+9)

explanation:
I learned in math last year
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3x − 2y = 6 <br> 3x + 10y = −12<br> Find the common x and y.
Ganezh [65]

x = 1

y = -3/2

Solution: (1, -3/2)

//Hope it helps.

7 0
3 years ago
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Find a area of a circumference that is 13 ft for 3.14 π
Elena-2011 [213]

Answer:

4.14x3.14=12.9996

Step-by-step explanation:

This is the closest to 13 ft via circumference

Here is a few equations a dn formulas to remind you.

Area=3.14xRxR or Pi*rr

This is Pi times the radius times the radius.

The radius is half of the circle or half of the Diameter.

Area(semi-circle)=1/2x3.14xrxr

Circumfrence=3.14xDor 3.14xdiameter

<u><em>If this answer helped pls give brainlest.</em></u>

8 0
2 years ago
If the nucleus of an atom contains 12 protons, how many electrons are there in a neutral atom?
Cloud [144]

Answer:

An atom of sodium has 11 proton, 11 electrons, and 12 neutrons.

3 0
3 years ago
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PLS HELP 50 PTS
Nookie1986 [14]

c. 35 + 50x ≤ 1,325

Step-by-step explanation:

Abbey's total cost must be less then or equal to her total savings, i.e.

cost ≤ savings

it is given that cost = fixed registration fee and a monthly fee of $50 per month. Hence,

fixed registration + (monthly fee)*(number of months) ≤ savings

let the number of months be x,

hence

35 + 50x ≤ 1325(c)

7 0
2 years ago
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Which is an expression to find the speed in m/s? d = 40 meters, t = 10 seconds
Jobisdone [24]
The answer is A because the equation is 40/10 which would give you 4 and it asks m/s.
3 0
3 years ago
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