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SpyIntel [72]
3 years ago
9

Math help? 10 points!

Mathematics
1 answer:
Kipish [7]3 years ago
4 0
Perimeter is when you add all the sides together...but oh, no! There are two sides missing! So we have to find it. The horizontal like could be x and the vertical, the y. x would be 3 because one side is 7 and the other side is 4, so if we subtract them, we get 3. Same for the vertical, the y would be 3. (3+3=6)

Now we could add all sides to get the last choice, or 26 cm.
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Consider the function represented by 9x+3y= 12 with x as the independent variable. How can this function be written using
Semenov [28]

Answer:

f(x) = -3x + 4

Second option

Step-by-step explanation:

In function notation, the <u>"y" variable is isolated and replaced with "f(x)"</u>.

Isolate "y" by keeping "y" on the left and moving everything else to the right. To move something, do its reverse operation to both sides.

9x + 3y = 12

9x + 3y - 9x = 12 - 9x                  Do -9x on both sides

3y = -9x + 12

3y/3 = -9x/3 + 12/3                      Divide by 3 on both sides

y = -3x + 4                             Change to function notation

f(x) = -3x + 4                         Answer

8 0
4 years ago
A blueprint of Sarah's room and walk-in closet is represented below. Each box on the diagram represents 1 square foot
kogti [31]

Answer:

70 sq ft

Step-by-step explanation:

count the squares.

5 0
3 years ago
The inverse of f(x)=(x-2)^2
algol [13]
That the answer x^2-4x+4
7 0
4 years ago
Read 2 more answers
Please help and show all work!​
zhannawk [14.2K]

Answer:

C

Step-by-step explanation:

Area of a circle = pi × r²

Area = 3.14 × 16²

803.84 cm²

4 0
3 years ago
Read 2 more answers
What is the area of triangle ABC?
Stella [2.4K]

9514 1404 393

Answer:

  C.  36√3 square units

Step-by-step explanation:

Your knowledge of special triangles tells you that height CD is ...

  CD = 6√3

so the area is ...

  A = 1/2bh

  A = 1/2(12)(6√3) = 36√3 . . . . square units

_____

<em>Additional comment</em>

The 30°-60°-90° right triangle that is half an equilateral triangle has a short side equal to half the length of the long side. The Pythagorean theorem tells you that the middle-length side is √(2²-1²) = √3 times the shortest side. That is, the side length ratios in this "special" triangle are ...

  1 : √3 : 2

This means the length DB is 12/2 = 6, and the length CD is 6√3.

7 0
3 years ago
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