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Alex17521 [72]
3 years ago
9

If √7 = 2.646, find without using calculator,the valueof√0.0007​

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
4 0

Answer:

√0.0007​ = 0.02646

Step-by-step explanation:

We know that:

√7 = 2.646

We want to find the value of:

√0.0007

Also we know the relations:

\frac{\sqrt{x} }{\sqrt{y} } = \sqrt{\frac{x}{y} }

Then:

\sqrt{0.0007} = \sqrt{\frac{7}{10,000} }

We can rewrite this as:

\sqrt{\frac{7}{10,000} } = \frac{\sqrt{7} }{\sqrt{10,000} }  = \frac{2.646}{100} = 0.02646

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What is the solution to the system of equation 2y - x = 8, and y - 2x = -5
gladu [14]

Answer:

Step-by-step explanation:

-x + 2y = 8

-2x + y = -5

2x - 4y = -16

-2x + y = -5

-3y = -21

y = 7

-x + 14 = 8

-x = -6

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(6,7)

8 0
3 years ago
I need help with geometry.
Dahasolnce [82]
1.

In any trapezoid, the length of the midsegment is \frac{|base_1|+|base_2|}{2}

substituting the known values:

\frac{24+|base_2|}{2}=19

24+|base_2|=38

|base_2|=38-24=14

2.

Notice that since D and have the same y-coordinate, then DE is horizontal, and since F and D have the same x-coordinate, FD is vertical.

Thus FD and DE are perpendicular, so the triangle FED is a right triangle.

The median drawn from the right angle, is equal to half the hypotenuse.

That is, |DO|=1/2 |FE|, thus |OE|=|OF|=|OD|, are all radii of the circle centered at O.

O is the midpoint of EF, and is found by the Midpoint formula:

O=( \frac{1+7}{2} , \frac{5+1}{2} )=(4, 3)


Answer:

1. 14

2. (4, 3)

4 0
3 years ago
I forgot how to divide
atroni [7]

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Divide the first digit.

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(See image attached for an example)

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enyata [817]
Question 4 Answer: 72/9=8 then you would 8x18=144 so it would take the person 2 hours and 24 minutes to deliver 72 newspapers. 
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2.<br> 125 decreased by a 35<br> number =
zalisa [80]

Answer:

90

Step-by-step explanation:

decreased=subtract

125-35=90

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4 years ago
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