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Juliette [100K]
3 years ago
9

Define square root. Give an example.

Mathematics
1 answer:
lozanna [386]3 years ago
7 0

Answer:

A square root of a number is a value that, when multiplied by itself, gives the number.

Example: 4 × 4 = 16, so a square root of 16 is 4.

The symbol for a square root is √ which always means the positive square root.

Example: √36 = 6 (because 6 x 6 = 36)

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Find 8x+y when x=2 and y=5.
fgiga [73]

Answer:

21

Step-by-step explanation:

8x+y, when x=2 and y=5,

then 8*2+5. Because the 2 is right next to the 8, it isn't '82', but '8*2'

According to  PEMDAS, multiplication is done first, so

8*2= 16,

16+5, which is 16+5= 21

7 0
3 years ago
I need to turn this into a decimal so hard
tangare [24]
First one: 0.21
Second one: 0.4
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3 years ago
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In triangle ABC, AB = 90 in., BC = 80 in., and angle B measures 50°. What is the approximate perimeter of the triangle?
Monica [59]

Answer:

The answer to your question is Perimeter = 287.3 in

Step-by-step explanation:

AB = 90 in

BC = 80 in

∠B = 50

Perimeter = ?

Process

1.- We need to find AC using Law of sines

\frac{sin A}{80} = \frac{sin 50}{90}

       sin A = \frac{80}{90} sin 50

       sin A = 0.68

              A = 42.9 ≈ 43

The sum of the internal angles in a triangle equals 180°

       A + B + C = 180°

       43 + B + 50 = 180

       B = 180 - 43 - 50

       B = 87°

\frac{AC}{Sin 87} = \frac{90}{sin 50}

AC = 90 \frac{sin 87}{sin 50}

      AC = 117.3

2.- Find the perimeter

     Perimeter = AB + BC + AC

     Perimeter = 90 + 80 + 117.3

     Perimeter = 287.3 in

5 0
3 years ago
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What is the value of y?
andrew11 [14]
The value of y is c
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Belinda walks 10 minutes on the first day and plans to increase the number of minutes by 2 minutes each day.How many will Belind
Korolek [52]

Answer:

24 minutes

Step-by-step explanation:

This can be explained with the equation y=2x+10 (I chose 2 arbritrary variables, any are acceptable). A week is equivalent to 7 days so x=10. Plug this into the equation and you end up with 24, because 2(7)+10=24

8 0
3 years ago
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