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Scrat [10]
3 years ago
13

Simplify.

Mathematics
1 answer:
zzz [600]3 years ago
6 0

Answer:

5 -2√10 = C

Step-by-step explanation:

√25 -√40

√25 = √5 x5 = √5² = 5

√40 = √5 x 8 = √5x 2x4 = √10x4 = √10x 2² = 2√10 (when the 2 comes back into the square root it become 2²)

√25 -√40 = 5 -2√10

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A shark swims 140 meters in 15.5 seconds what is the sharks average swimming rate in meters per second
tatuchka [14]
140/15.5 = unit rate
140/15.5 = around 9.03
Average swimming rate: 9.03 meters per second
5 0
3 years ago
Solve for d 2 + d = 2 - 3 (d - 5) -2
Kobotan [32]

Answer:

3.25

Step-by-step explanation:

2 + d = 2 - 3 (d - 5) -2

d= -3d+15-2

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d= 13/4= 3.25

5 0
3 years ago
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-8xc = 1 solve for x
Nastasia [14]

Answer:

[-8c]⁻¹ = x

Step-by-step explanation:

-8xc = 1

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-8c -8c

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This, according to the Negative Exponential Rule [Reverse], is how you write this as a rational exponent. You bring the denominator to the numerator while ALTERING THE INTEGER SYMBOL FROM POSITIVE TO NEGATIVE:

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3 0
3 years ago
Please help me with this!!!
Dafna1 [17]

Answer:

option C is correct answer ..

Step-by-step explanation:

angle A + angle B + angle C = 180° ( by angle sum property of triangle )

3x + 4x-19+ 3x -1 = 180

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10x = 180 +20 = 200

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angle B = 4× 20 - 1 9 = 61 °

angle C = 3× 20 -1 = 59 °

angle B is greatest so side opposite to it will be greatest in length ....so length of AC is greatest ....

so option C is the correct answer of this question ...

plz mark my answer as brainlist plzzzz vote me also as I have done this question by taking a lot of time Hope it will be helpful for you ....

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3 years ago
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PilotLPTM [1.2K]

Answer:

angle c

Step-by-step explanation:

angle c is the angle of incidence.  It is the angle between the perpendicular  ( line that meets the surface at 90 degrees) and the ray that is coming in

8 0
3 years ago
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