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sergij07 [2.7K]
3 years ago
12

Solve this question using elimination

Mathematics
1 answer:
Lorico [155]3 years ago
6 0

\left\{\begin{array}{ccc}y=2x-5\\y=2x+7&&\text{multiply both sides by (-1)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}y=2x-5\\-y=-2x-7\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad0=-12\qquad\text{FALSE}\\\\Answer:\ \boxed{NO\ SOLUTION}

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The circumference of a circle is 132cm . find the area of the circle
bonufazy [111]

Answer:

1386cm squared

Step-by-step explanation: first find the diameter.

132=pi x diameter

132=22/7xd

multiply both sides by 22/7 and you'll get 42cm

then find the area by doing this.

22/7x21x21 which gives you 1386cm squared.

the 21 is the radius.


4 0
3 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Valentin [98]

Answer:

Step-by-step explanation:

Slope-intercept equation of a line is,

y = mx + b

Here, m = Slope of the line

b = y-intercept

If m = -6 and b = 3,

Equation of the line will be,

y = -6x + 3

Input - output values got the graph of this line,

x          -1            0           1           2          

y           9           3          -3         -9

Now by plotting these points we can draw the line on graph.

7 0
3 years ago
Let the universal set, s, have 66 elements. a and b are subsets of s. set a contains 19 elements and set b contains 34 elements.
Otrada [13]

The cardinality of the union between two sets is given by

N(A\cup B) = N(A) + N(B) - N(A \cap B)

In fact, if an element is in both A and B, it is counted in both N(A) and N(B), so we're counting it twice. By subtracting the cardinality of the interserction, we're taking back one of these "extra-counted" element, and the count is correct. In your case, the numbers are

N(A \cup B) = 19+34-10 = 43

This means that the two sets cover, without repetitions, 43 of the 66 elements in the sets. So, there are

66-43 = 23

elements which are in neither A nor B

5 0
3 years ago
What are the factors of 21
sweet-ann [11.9K]

Answer:

21: 3and 7 factors

54: 6and 9 factors

3 0
3 years ago
The quotient of a number and 15 is no greater than 450. what are possible values for the number
mixas84 [53]

IAnswer:

One possible solution is 450 and there are many more

Step-by-step explanation:

100,200,300

3 0
3 years ago
Read 2 more answers
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