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bezimeni [28]
3 years ago
12

What are two other names for xy

Mathematics
2 answers:
ELEN [110]3 years ago
8 0

1.

(x,y)---Ordered Pair of a point in two dimensional plane

x=Abscissae

y=Ordinate

2.

xy--Two Dimensional Plane

or xy-Plane

3.

xy----Monomial , that is a single term having two variable x and y.

Vinil7 [7]3 years ago
6 0
In Mathematics, <em>x</em> and <em>y</em> are examples of variables.
You can use any letter as a variable but, make sure to include a <em>let statement</em> when using variables.
A let statement essentially tells what the variable represents.
Ex: let <u /><em>h </em>= houses sold

Hope this helps!
-Benjamin

 
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Answer:

x =  - 4 \\ x =  - 7

Step-by-step explanation:

x {}^{2}  + 28 =  - 11x \\ x {}^{2}  + 11x + 28 = 0 \\ x {}^{2}  + 7x + 4x + 28 = 0 \\ x(x + 7) + 4(x + 7) = 0 \\ (x + 4)(x + 7) = 0 \\  \\ x =  - 4 \:  \:  \:  \:  \:  \:   \\ \: x =  - 7

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3 years ago
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Hanna walks 1 2/3 miles to school. After school she walks 1 1/2 mikes to work. How many miles does she walk before and after sch
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She walks 3.167 miles in total
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Suppose a student visited 81 websites while conducting research. If 9 of the websites were "us.gov" websites, what percentage of
rjkz [21]

Answer:

9/81 or 1/9 = .1111111111R

Step-by-step explanation:

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3 0
3 years ago
A tree DOUBLES in height each year until it reached its maximum height over the course of 10 years. How many years did it take f
RideAnS [48]

Answer:

9 years

the tree doubles in height

we can make a model

1 x 2 = 2

2 x 2 = 4

4 x 2 = 8

8 x 2 = 16

16 x 2 = 32

32 x 2 = 64

64 x 2 = 128

128 x 2 = 256

256 x 2 = 512

512 x 2 = 1024

Let's say 1024 is the maximum height

half the maximum height is 1024 x 0.5 = 512 so it will take 9 years because it reached 512 on the 9th year

Step-by-step explanation:

8 0
4 years ago
Graph the following piecewise function on a separate piece of graph paper and upload your graph below.
Alecsey [184]
ANSWER

To graph the function

f(x)=\left \{ {{x+4\:\:if\:\:-4\leq x

follow the steps below.

1. Find y- intercept by plugging in x=0.

x=0 is on the interval,  -4\leq x, so we substitute in to

f(x)=x+4

\Rightarrow f(0)=0+4

\Rightarrow f(0)=4

Hence the y-intercept is (0,4)

2. Find x-intercept by setting f(x)=0

This implies that

x+4=0, on -4\leq x

or

2x-1=0 on 3\leq x

We now solve for x on each interval,

x=-4, on -4\leq x

or

x=\frac{1}{2} on 3\leq x

But observe that

x=\frac{1}{2} does not belong to 3\leq x

This means it  can never be an intercept for this piece-wise function.

Hence our x-intercept is (-4,0)

3. Plotting the boundaries of the interval.

For f(x)=x+4 on  -4\leq x

f(-4)=-4+4

\Rightarrow f(-4)=0.

This point (-4,0) coincides with the x-intercept.

f(3)=3+4

f(3)=7

So we have the point (3,7). But note that x=3 does not belong to this interval so we plot this point as a hole.

For f(x)=2x-1 on 3\leq x

f(3)=2(3)-1

\Rightarrow f(3)=5

So we plot (3,5)

f(6)=2(6)-1

\Rightarrow f(6)=11

So we plot (6,11) also as a hole.

Plotting all these points we can now graph the function,

f(x)=\left \{ {{x+4\:\:if\:\:-4\leq x

See attachment for graph.

7 0
3 years ago
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