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Oksana_A [137]
3 years ago
5

Tell whether each number is rational or irrational: Pi, -1/2, the square root of 2/3, and 0.57575757

Mathematics
1 answer:
DedPeter [7]3 years ago
5 0
Pi: Irrational
√(2/3): Irrational

0.57575757 is rational 
and -1/2 is rational.
I hope this helps.
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Find the x-intercepts of the parabola with vertex (1, -9) and y intercept at (0, -6).
Sergio [31]
Hello,

Equation is y=k(x-1)²-9
and when x=0,y=-6==>-6=k*1²-9==>k=3

y=3(x-1)²-9
when y=0, 3(x-1)²-9=0
==>(x-1-√3)(x-1+√3)=0
x-intercepts are (1+√3,0) and (1-√3,0)

Answer B.

3 0
3 years ago
SOMEONE DO NUMBER 1 FOR ME IM RUSHING. GIVING BRAINLIEST!!
MrRissso [65]

Answer:

Step-by-step explanation:

                            Mixed number          Improper fraction

a) 1 + 1 + 1/3 =            2\frac{1}{3}                                7/3

b) 1 + 1 + 1 + 5/8 =     3\frac{5}{8}                                 29/8

c) 1 + 1 + 1 +2/4 =      3\frac{2}{4}                                  14/4

6 0
3 years ago
6 tenths + 3 thousands= how many thousandths
mixer [17]
6 tenths + 3 thousandths equals 0.603 thousandths.
8 0
3 years ago
About how much taller is rhe burj khalifa than the eiffel tower?
Ymorist [56]
The CN Tower is 553.33 m (1,815.4 ft) tall from its antenna spire. Meanwhile, the Eiffel Tower only measures 324.00 m (1,063 ft) from its antenna spire.
4 0
3 years ago
How to solve this using the elimination method
marishachu [46]
10x+2y=18
10x-7y=-18
Multiply the second one by -1
-10x+7y=18
Then add the two equations 
  10x+2y=18
+-10x+7y=18
----------------
9y=36
y=4

Plug that back into one of the equations above and solve for x
10x+2y=18
10x+2(4)=18
10x+8=18
10x=10
x=1

so your answer is x=1 and y=4 or (1,4)
7 0
3 years ago
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