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elena55 [62]
3 years ago
13

Need help with this

Mathematics
1 answer:
siniylev [52]3 years ago
5 0
I think it’s 46.3 units squared that is the answer.
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Factor completely and then place the factors in the proper location on the grid. 81a2 + 36a + 4
gizmo_the_mogwai [7]
They are all perfect squares
(9x+2)(9x+20
(9x+2)^2
6 0
3 years ago
Read 2 more answers
A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was 14901490 and the standard dev
kicyunya [14]
<h2>Answer with explanation:</h2>

Given : A standardized​ exam's scores are normally distributed.

Mean test score : \mu=1490

Standard deviation : \sigma=320

Let x be the random variable that represents the scores of students .

z-score : z=\dfrac{x-\mu}{\sigma}

We know that generally , z-scores lower than -1.96 or higher than 1.96 are considered unusual .

For x= 1900

z=\dfrac{1900-1490}{320}\approx1.28

Since it lies between -1.96 and 1.96 , thus it is not unusual.

For x= 1240

z=\dfrac{1240-1490}{320}\approx-0.78

Since it lies between -1.96 and 1.96 , thus it is not unusual.

For x= 2190

z=\dfrac{2190-1490}{320}\approx2.19

Since it is greater than 1.96 , thus it is unusual.

For x= 1240

z=\dfrac{1370-1490}{320}\approx-0.38

Since it lies between -1.96 and 1.96 , thus it is not unusual.

5 0
3 years ago
A superhero recently asked his nemesis how many cats she has. She answered with a​ riddle: ​"Five dash sixths of my cats plus tw
pochemuha
1 1/6
I think
Or 2 5/6
3 0
3 years ago
In 7 minutes, Jenny can type 63 words. What is her rate in words per minute?​
NISA [10]

Answer:

9

Step-by-step explanation:

6 0
3 years ago
Does some body knows how to do this ?
lakkis [162]
It's asking for the "perimeter" of the molding as far as I can tell,
namely, how long is the border of that molding
notice the picture here

5 0
3 years ago
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