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tatuchka [14]
3 years ago
14

A rectangular courtyard 3.78 metres long

Mathematics
1 answer:
Alborosie3 years ago
8 0

Answer:

i believe the answer is C

Step-by-step explanation:

3.78 meters = 378 cm

5.25 meters = 525 cm

378 x 525 = 198,450

198,450 / 42 = 4725

4725 which is a whole number

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If you stand next to a wall on a frictionless skateboard and push the wall with a force of 36 N, how hard does the wall push on
VARVARA [1.3K]

The wall pushes back with an equal and opposite force. So it pushes with a force of 36N in the opposite direction of the push. This allows you to move away from the wall.

7 0
3 years ago
Abriana claims that the solution to the system of linear equations y = 2x – 1 and –12x + 3y = 9 is (–2, –5). Select all methods
EleoNora [17]

Answer:

Substitution method can be used

Step-by-step explanation:

Given the system of equations

y = 2x-1 ....1

-12x + 3y = 9 ....2

The best method to use id the substitution method

Substitute equation 1 into 2;

From 2;

-12x + 3y = 9

-4x + y = 3

-4x + 2x-1 = 3

-2x -1 = 3

-2x = 3+1

-2X = 4

x = -4/2

x = -2

Substitute x = -2 into 1

y = 2x - 1

y = 2(-2)-1

y = -4-1

y = -5

Hence the solution to the system of equation is (-2, -5)

7 0
2 years ago
A box, with rectangular sides, base and top is to have a volume of 2 cubic feet. It has a square base. Express the surface area
guajiro [1.7K]

Answer:

Total cost F (w) = 160/w + 200* √(2w)

Step-by-step explanation:

Volume in cubic feet

V (box) = x*y*w         and  square base means x=y so V= 2 = x^(2)*w

hence x^(2) = 2/w (1)

Area of base and top in square feet, and cost in $

Area(t+b) = 2*x*y = 2x^(2)       C(1) = Cost of ( base + top)  C(1) = 40*2x^(2)

                                                  C(1) =80*x^(2) and from eq. 1

                                                  C(1) = 80*2/w = 160/w

Area of sides = 4 * x* w = 4*√((2/w))*w

C(2) = Cost of sides. is:            C(2)= 50*4*√((2/w))*w    C(2) = 200* √2w

Total Cost = F(c) = 160/w +200*√2w

3 0
3 years ago
You throw a ball at a height of 6 feet above the
Alexandra [31]

Answer:

0.375 second and 3.5 second

Step-by-step explanation:

The position can be modeled by a quadratic function \displaystyle{h=-16t^2+62t+6}. We are tasked to find the time when a ball reaches a height of 27 feet. Therefore, let h = 27:

\displaystyle{27=-16t^2+62t+6}

Solve for t:

\displaystyle{27-6=-16t^2+62t}\\\\\displaystyle{21=-16t^2+62t}\\\\\displaystyle{16t^2-62t+21=0}

Since the equation is quite complicated and more time-consuming to solve, i'll skip the factoring or quadratic part:

\displaystyle{t=0.375, 3.5}

After done solving the equation, you'll get t = 0.375 and 3.5 seconds. These solutions are valid since both are positive values and time can only be positive.

Hence, it'll take 0.375 and 3.5 seconds for a ball to reach 27 feet.

3 0
2 years ago
Which is the greatest common factor of 24 and 60
Vlad [161]

Aloha! My name is Zalgo and I am here to be of assistance to you today. The GCF (Greatest Common Factor) of 14 and 60 would be 12. To the GCF of 24, you need to multiply 2^3 by 3. In order to get the GCF of 60, you need to multiply 2^2 by 3 times 5.

I hope that this info helps! :P

"Stay Brainly and stay proud!" - Zalgo

(By the way, do you think you could mark me as Brainliest? I'd greatly appreciate it! Mahalo! XT)

5 0
3 years ago
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