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Otrada [13]
3 years ago
7

Problem page the sum of two numbers is 67 and the difference is 11 . what are the numbers?

Mathematics
1 answer:
pav-90 [236]3 years ago
8 0
Try this:
1. sum of numbers is x+y=67, the difference between them is x-y=11
2. it is possible to make up and resolve the system:
\left \{ {{x+y=67} \atop {x-y=11}} \right. \ =\ \textgreater \  \  \left \{ {{x=39} \atop {y=28}} \right.
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Evaluate. 9^2 • ( 1/3) ^2 - 9 A) 1/9 B) 0 C) 1 D) 9 if right brainest
anzhelika [568]

Answer:

0

Step-by-step explanation:

9^2 * (1/3)^2 -9

PEMDAS says powers first

81 * 1/9 -9

Then multiply

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Then subtract

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6 0
3 years ago
The numbers of beads on 500 handcrafted bead
pashok25 [27]
 <span>The numbers of beads on 500 handcrafted bead necklaces follow a normal distribution whose mean is 24 beads and standard deviation is 4 beads. 
</span>so....
<span>About 24 necklaces have more than 28 beads. </span>
<span>About 48 necklaces have more than 28 beads. </span>
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</span> <span>About 80 necklaces have more than 28 beads. 
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Z score is 28-24/4=1 
(1-.8413)=0.1587 

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i did this like 2 or 3 years ago .</span>
7 0
3 years ago
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8 0
3 years ago
11. (21x² - 6x +14) + (x²-3x+18)
Furkat [3]

Answer:

22x^2-9x+32

Step-by-step explanation:

(21x² - 6x +14) + (x²-3x+18)

To add, we need to combine like terms

21x^2+x^2     -6x-3x    +14+18

22x^2-9x+32

6 0
2 years ago
Read 2 more answers
What is the answer? ;3
aleksandrvk [35]
First you add the numbers

6/2*3

Now you calculate the expression

6/2*3

The answer is 9, therefore 9 is your answer
3 0
2 years ago
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