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Arlecino [84]
3 years ago
14

2 square root of 8 multiplied by the square root of 20

Mathematics
2 answers:
Len [333]3 years ago
7 0

It is 25.2982212813 hope you have a good day

dybincka [34]3 years ago
6 0

Step-by-step explanation:

2 \sqrt{8}  \times  \sqrt{20}  \\  \\  = 2 \sqrt{4 \times 2}  \times  \sqrt{4 \times 5}  \\  \\  = 2 \times 2 \sqrt{2}  \times 2 \sqrt{5}  \\  \\  = 8 \sqrt{2 \times 5}  \\  \\  =  8\sqrt{10}

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Here’s the pic help please answer I’ll give brainliest !! It’s for a test
Fudgin [204]
A= -2

b=0

hope this helps
8 0
3 years ago
An image point has coordinates B'(7, -4). Find the coordinates of its pre-image if the translation used was (x + 4, y + 5).
Vera_Pavlovna [14]

Answer:

B

Step-by-step explanation:

B'(7, -4)

Let the pre-image coordinates be (x,y)

Consider x-coordinate,

x + 4 = 7

x = 3

Consider y-coordinates,

y + 5 = -4

y = -9

pre-image coordinates is (3, -9)

8 0
3 years ago
Read 2 more answers
Whats the domain and range of the relation
hodyreva [135]

Answer:

See below in bold.

Step-by-step explanation:

The domain is the list of x values and the range is the list of y values.

Reading from the graph: The domain is {-3.5, -2, 0, 3.5}.

The range is {3, 1.5, -0.5, }.

5 0
3 years ago
As Mercury revolves around the sun, it travels at a rate of approximately miles per second. Convert this rate to kilometers per
Artist 52 [7]

Answer:

Step-by-step explanation:

There are a lot of conversion factors involved in this question.

First of all the radius of Mercury's orbit is 0.4 times that of the earth. The earth's distance from the sun is about 93 million miles. So Mercury's distance or radius is 93 * 0.4 = 37.2 million miles.

The circumference = 2 * pi * r

The circumference = 6.28 * 37200000 = 233616000  miles

This is accomplished in 88 days.

88 days [24 hours/day] * [3600 sec / hour] = 7603200 seconds

88 days = 7603200 second

Rate of travel = miles / second

Rate of travel = 233616000 / 7603200

Rate of travel = 30.726 miles / second

This number was not given so I had to derive it. The official number does not disagree a great deal from this number. It just depends on what constants you use.

1 mile = 1.6 km

30.725 miles = x           Cross multiply

x = 1.6 * 30.725

x = 49.16 km/ second

I cannot go any further because you have not provided any givens. The answers do vary quite a bit because I have assumed that Mercury's orbit is a circle. It really is not. It is more like an ellipse.  

The official speed in km/sec = 47 which means the answer I have given is very close. A more accurate answer would require that you put the numbers in the blanks that you were given.

7 0
3 years ago
Nicholas earned 8% in his savings account. if he is in the 28% tax bracket, what is his after-tax savings rate of return?
Kamila [148]
If Nicholas is going to pay 28% in taxes of the 8% interest he is earning, then his net percentage would be 72% of the 8%.

To determine this overall rate of return multiply 0.72 x 0.08.

0.72 x 0.08 = 0.0576 or 5.76 % rate of return.
5 0
4 years ago
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