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Anna35 [415]
3 years ago
10

What two numbers add to 7 and multiply to 0??

Mathematics
2 answers:
ANTONII [103]3 years ago
5 0
Anything times 0 is zero. 
What number plus zero is equal to 7? 7. 

Two numbers that add to 7 and multiply to 0 are 0 and 7. 

0 x 7 = 0
0 + 7 = 7
nikdorinn [45]3 years ago
3 0
7x0=7
0+7=7

it seems difficult to find the answer.. just try not to over think these problems k.
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mr Goodwill [35]

Answer:

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Would appreciate some help with this:<br><br> Verify (sinq+cosq)^2 - 1 = sin2q
Phantasy [73]

Hello from MrBillDoesMath!

Answer:

See Discussion below

Discussion:

(sinq + cosq)^2 =                                     => (a +b)^2 = a^2 + 2ab + b^2

(sinq)^2 + (cosq)^2 + 2 sinq* cosq        => as (sinx)^2 + (cosx)^2 = 1

1 + 2 sinq*cosq              (*)


Setting a = b = q in the trig identity:

sin(a+b) = sina*cosb + cosa*sinb                      

sin(2q) =                      (**)

sinq*cosq + cosq*sinq      => as both terms are identical

2 sinq*cosq


Combining (*) and (**)

(sinq + cosq)^2 = 1 + 2sinq*cosq     => (**) 2sinq*cosq =  sqin(2q)

                          = 1 +  sin(2q)

Hence

(sinq + cosq)^2  = 1 +  sin(2q)            => subtracting 1 from both sides

(sinq + cosq)^2  - 1 =   sin(2q)  

The last statement is what we are trying to prove.



Thank you,

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3 years ago
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5 0
3 years ago
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Kamila [148]

Answer:

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Step-by-step explanation:

3z + 8 - 2 = -35

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2 years ago
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ki77a [65]

Answer:

15

Step-by-step explanation:

Use the pythagorean theorem.

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8² + B² = 17²

64 + B² = 289

B² = 225

B = √225 = 15

7 0
3 years ago
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