4 years ago

How many times can 7 go into 50

Mathematics

1 answer:

Damm [24]4 years ago

3 0

Answer:

7 without going over

Step-by-step explanation:

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it takes 8 labours 6days to complete a certain job.how many labours would complete the job in 15 days.

VashaNatasha [74]

Answer:

Step-by-step explanation:

Required man days to complete the job = 8 * 6

= 48 Man Days

Required labors to complete the job by 15 days = 48/15

= 3.2

It means, it is required 4 labors can complete the certain work by 15 days

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3 years ago

What is the inverse of A(r)=15+3r

mel-nik [20]

Answer:

A(r)=15-3r

Step-by-step explanation:

switch the sign of +3r to make it -3r

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3 years ago

7. Find mDBC.<br> 6. Find mŁABD.

Romashka-Z-Leto [24]

ABD: 22
DBC: 109

they are congruent angles

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3 years ago

Determine the zeroes of the polynomial

Anna71 [15]

Answer:

3,7/6

Step-by-step explanation:

$(\sqrt{x^2-4x+3} )+(\sqrt{x^{2} -9} )-(\sqrt{4x^2-14x+6} )\\=(\sqrt{x^2-x-3x+3} )+(\sqrt{(x^2-3^2})-(\sqrt{4x^2-2x-12x+6})\\ =(\sqrt{x(x-1)-3(x-1)} )+\sqrt{(x+3)(x-3)}-\sqrt{2x(2x-1)-6(2x-1)} \\=\sqrt{(x-1)(x-3)}+\sqrt{(x+3)(x-3)} -\sqrt{2(2x-1)(x-3)} \\=\sqrt{x-3} (\sqrt{x-1} +\sqrt{x+3} -\sqrt{2(2x-1)} )\\$

$\sqrt{x-3} =0~gives~x=3\\or~\sqrt{x-1} +\sqrt{x+3} -\sqrt{2(2x-1)} =0\\or~ \sqrt{x-1} +\sqrt{x+3} =\sqrt{2(2x-1)} \\squaring\\x-1+x+3+2\sqrt{x-1} \sqrt{x+3} =2(2x-1)\\2x+2+2\sqrt{(x-1)(x+3)} =4x-2\\2\sqrt{x^2-x+3x-3} =2x-4\\\sqrt{x^2+2x-3} =x-2\\again ~squaring\\x^2+2x-3=x^2-4x+4\\\\2x+4x=4+3\\6x=7\\x=\frac{7}{6}$

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3 years ago

How to draw model of 3 × 40

dangina [55]

You could try an Array or Area

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3 years ago