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2 years ago

Please Help I will give 82 Points and Brainliest

Mathematics

2 answers:

ankoles [38]2 years ago

6 0

So we subtitute 3 to any "m" in your problem so,

2m^2+12

2(3)^2+12

2(9)+12

18+12

So, B is the correct answer!

Scilla [17]2 years ago

5 0

Answer:

B. 30

Step-by-step explanation:

2m^2 + 12

m = 3

2(3)^2 + 12

3 squared is 9

2(9) + 12

2 times 9 is 18

18 + 12 = 30

2m^2 + 12 = 30

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A contractor charges $1,200 for 100 swat feet of roofing installed. At this rate, how much does it cost to have 1,000 square fee

Oliga [24]

Answer:

12000

Step-by-step explanation:

1200=100

x=1000

x=100*1200/100

3 0

3 years ago

An engineer is trying to design a runway for an airport. He knows that airplanes have the ability to accelerate at 3.3 m/s ^ 2 a

chubhunter [2.5K]

Answer:

The proposed 1600 meters runway length is not long enough

Step-by-step explanation:

The given parameters are;

The amount by which a plane can accelerate = 3.3 m/s²

The time it takes for a plane to lift off the ground = 35 seconds

The length of the runway on the blueprint = 1,600 meters

Therefore, from the equation of motion for distance traveled, s, acceleration, a, and time taken, t, we have;

s = u·t + 1/2·a·t²

Where;

u = The initial velocity

t = 35 seconds

a = 3.3 m/s²

Given that all planes will start motion from rest, we have;

u = 0 m/s

Therefore;

s = 0 × 35 + 1/2 × 3.3 × 35² = 2021.25 meters

Which indicates that the length of the runway a plane would need for take off should be at least 2021.25 meters long, therefore, the blueprint's 1600 meters runway length is not long enough.

7 0

3 years ago

20.99 for a 42 lb-bag of dog food (im pretty sure your supposed to divide the last number to the first number example: 18.5÷11.9

ra1l [238]

Answer:

18.5÷11.99 is correct the answer is most likly option B

5 0

2 years ago

LABEL THE TRIANGLE!! PLEASE HELP!!

Anettt [7]

Answer:

Determination of HYP,OPP,ADJ with respect to x.

Opposite side of right angle:Hypotenuse: AC

Opposite side of given angle: Opp:BC

remaining side of a triangle: Adjacent:AB.

8 0

2 years ago

Please help me with this question

vovikov84 [41]

B becuase if you divide the rise over run you get 45 which is the correct answer.
hope this helps
-turtles12345

5 0

3 years ago