3 years ago

1.Which property justifies the statement if y=7 then 7=y?

Mathematics

1 answer:

Ad libitum [116K]3 years ago

4 0

Answer:

I believe that is the symmetric property.

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If a + 2 < b + 3, then a < b. true or false

mash [69]

Answer:

true

Step-by-step explanation:

It is true because no matter what numbers you plug into the equation b+3 has to be greater than a+2 so it has to be one ahead.

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3 years ago

Write the expression with your terms. 10x-2x

vfiekz [6]

Answer:

Step-by-step explanation: first you do 10 minus 2 you get 8

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Which of the following is the algebraic expression that best describes sequence four, eight, 12, 16

Verdich [7]

The answer is 2x+4: )

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3 years ago

Suppose a skydiver (mass = 75kg) is falling toward the Earth. When the skydiver is 100m above the earth he is moving 60m/s. At t

sleet_krkn [62]

Answer:

Kinetic energy = 135 kJ

Potential energy = 73.5 kJ

Explanation:

Mass of sky diver = 75 kg

Velocity = 60 m/s

Height = 100 m

Kinetic energy is given by the expression, $KE = \frac{1}{2} mv^2$ , where m is the mass and v is the velocity.

So Kinetic energy = $\frac{1}{2} *75*60^2=135000J=135kJ$

Potential energy is given by the expression, PE =mgh, m is the mass, g is the acceleration due to gravity value and h is the height.

So, Potential energy = 75*9.8*100 = 73500J = 73.5 kJ

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4 years ago

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PLEASE HELP 35 points <br> What is the value of Y <br> What is the value of x

Svetlanka [38]

Answer:

$\sin(58°) = \frac{12}{y} \\ y = \frac{12}{ \sin(58°) } \\ y = \frac{12}{0.85} \\ \boxed{y = 14.15(approx)}$

$\tan(58°) = \frac{12}{x} \\ x = \frac{12}{ \tan(58°) } \\ x = \frac{12}{1.6} \\ \boxed{x = 7.5(approx)}$

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3 years ago