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Firlakuza [10]
3 years ago
12

Somebody help its due​

Mathematics
1 answer:
Degger [83]3 years ago
8 0

Answer:

3)  4.445 cm

4) 2.8575 cm

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Find the two Z-scores that separate the middle 73.72% on the Standard Normal Curve.
leonid [27]

Answer:

+1.12 and -1.12

Step-by-step explanation:

Let the two z scores be -z_1and+z_1.

Since  the two Z-scores that separate the middle 73.72% on the Standard Normal Curve, this can be represented by the equation:

P(-z_1

From the z table of the normal distribution, z₁ = 1.12. That is a z score of 1.12 gives 0.8686.

The two z scores are +1.12 and -1.12 = ± 1.12

4 0
3 years ago
Q bisects PR, PQ=3y, and PR=42. Find y and QR.
Vedmedyk [2.9K]
|PR| = |PQ| + |QR|; |PQ| = |QR| conclusion |PR| = 2|PQ|

|PQ| = 3y; |PR| = 42; |QR|=?

subtitute

42 = 2(3y)
6y = 42    |divide both sides by 6
y = 7

|QR| = 3(7) = 21
3 0
3 years ago
What does y= 3x - 2 equal?<br><br><br>​
cestrela7 [59]
THE ANSWER WOULD BE X=2/3
8 0
3 years ago
Read 2 more answers
3/4 &lt; ?/12 fill in the missing number
Lelechka [254]

Answer:

9

Step-by-step explanation:

12 / 4 = 3

3 x 3 = 9

3 0
3 years ago
Serafina is solving a number puzzle that involves three integers. Integers, e, f, and g, where e is negative. The product of e a
Alex73 [517]

Answer:

a

Step-by-step explanation:

3 0
3 years ago
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