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Reptile [31]
3 years ago
12

PLEASE help with these 3 pretty easy problems and explain how you got them!!! I will mark brainliest if right!!!!!!!

Mathematics
1 answer:
Alona [7]3 years ago
8 0

Answer:

27

Step-by-step explanation:

\frac{x - 3}{18} =  \frac{12}{9}

18 \times  \frac{x - 3}{18}  = 18 \times  \frac{12}{9}

x−3=9(2)⋅ \frac{12}{9}

x−3=2⋅12

x−3=24

x = 27

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Please Help me! 20 points
malfutka [58]

Answer:

-9/4 ÷ (-2/3)

Step-by-step explanation:

-(2 1/4) ➡ -9/4

-2/3 ➡ (again a reciprocal needed) -3/2 since we need the result to be positive both expression should remain negative so the answer is -9/4 ÷ -2/3

6 0
3 years ago
How do u guys solved this?
TEA [102]

Answer:

3 boxes

Step-by-step explanation:

First, we need to find the area of the whole square, so we can find out how much to subtract from. We can easily do this by multiplying 16 by 16, since it is a square.

16*16=256 square feet.

Now, we just need to find the area of the circular rug, and subtract it from 256 to find the area not covered by the rug that needs to be tiled. Since the sides of the rug touch each side of the floor, than the diameter will be the same as the side length of the square. Thus, the diameter is 16.

Now we can use the equation <em>A=pir^2 </em>or <em>Area=pi*radius squared</em> to find the area of the circle. The radius is halve of the diameter, so divide 16 by 2 to get the radius, or 8. Now all we have to do is square 8 and multiply it by 3.14.

8^2=64

Now multiply.

64*3.14=200.96.

The area of the circle is 200.96, so subtract 200.96 from 256.

256-200.96=55.04.

So they will need 3 boxes to cover the area left.

Hope this helps!

3 0
3 years ago
the product of two consecutive integers is 420. an equation is written in standard form to solve for the smaller integer by fact
Xelga [282]
Start by writing your own expression.

x is the smaller number and x + 1 is the next number

x(x + 1) = 420

x^2 + x - 420 =0 ⇒ constant = -420
6 0
2 years ago
Read 2 more answers
Find the indicated second-order partial derivative for<br> fyx if f(x,y)=e3x+2y
Verdich [7]
Fy = 2 because we derivate in raport witw y and x is like a constant;
fyx = 0 because we deivare in raport with x.
5 0
2 years ago
2/3 of 1 is<br> What is this
andrezito [222]

2/3 of 1 is simply 2/3 or 0.667

6 0
3 years ago
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