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Sergeeva-Olga [200]
3 years ago
8

WILL GIVE BRAINLIEST!!

Mathematics
1 answer:
Goshia [24]3 years ago
5 0

Answer:

Step-by-step explanation:

hello

25a^2-36a^2=(5a)^2-(6b)^2=(5a-6b)(5a+6b)

so the dimensions of the rectangle are

5a-6b and 5a+6b

hope this helps

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Find the measure of the largest angle in ABC if a = 12, b = 8 and c = 13.
Papessa [141]

Answer:

C=78.28^{\circ \:}

Step-by-step explanation:

We are given a triangle

whose sides are

a=12

b=8

c=13

Since, c is largest among them

So, angle C must be largest angle

we can find angle C

we can use law of cosine formula

cos(C)=\frac{a^2+b^2-c^2}{2ab}

now, we can plug values

cos(C)=\frac{12^2+8^2-13^2}{2\times 12\times 8}

cos(C)=\frac{13}{64}

now, we can find angle

we get

C=78.28^{\circ \:}

5 0
3 years ago
Find the difference: 27.85 - 0.1
Naya [18.7K]
The answer for the problem is 27.75
6 0
3 years ago
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Find f(x) and g(x) so that the function can be described as y = f(g(x)). y = 3/ square root of 3x + 4
Elis [28]
Well, your equation y=3/SQRT(3x+4) should be rationalized, but that's not what you want.

If f(x) = 3/SQRT(x+4) and g(x) = 3x

f(g(x)) then = 3/SQRT(3x+4), but rationalizing this = 3SQRT(3x+4)/(3x+4)

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3 years ago
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. If f(x) = 3x - x, what is the value of f(7 - 2)?
kifflom [539]

Answer:

10

Step-by-step explanation:

f(x) =3x-x=2x,

f(7-2)=f(5)= 2*5=10

4 0
3 years ago
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serg [7]

Answer: 109.5 km/ hr

Step-by-step explanation:

Distance = 73 km

Time = 40 minutes = 40/60 = 2/3 hours

Speed = Distance / time

= 73 / 2/3

= 73 x 3/2 = 219 / 2 = 109.5 km/hr

5 0
3 years ago
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