2 years ago

Question 1 How do metal atoms bond together?

Mathematics

1 answer:

Yanka [14]2 years ago

4 0

Answer:

Step-by-step explanation:

Hope this helps :D

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Ilia_Sergeevich [38]

5x - 9 ≤ 21
5x ≤ 21 + 9
5x ≤ 30
x ≤ 30 ÷ 5
x ≤ 6

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2 years ago

alberto knows that all the lines and rays are congruent to each other . he reasons that all segments must therefore be congruent

saw5 [17]

Answer:

Step-by-step explanation:

Alberto is correct in reasoning that all lines and rays are congruent to each other but incorrect in his reasoning about the line segments.

Line segments are equal in measure only when they are equal in length. They can have any orientation on a plane.

Since, AB = 3 units

CD = 4 units

Therefore, AB ≠ CD

Error in AB ≅ CD

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2 years ago

Tennis star Rafael Nadal lost at the Australian Open. How many Grand Slams has he won?

cluponka [151]

Answer:

Nadal won but it is the only major he hasn't won at least twice with 13 at Roland Harris four at the U.S

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2 years ago

What is the volume of a right circular cylinder in terms of Pi if its height measure 6 inches and the radius of its base is 2 in

docker41 [41]

V=hpir^2
r=2
h=6

v=6pi2^2
v=6pi4
v=24pi in³

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2 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

gladu [14]

Answer: a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

Mean height = 174.5 cm

Standard deviation = 6.9 cm

n = 50

we need to find the 98% confidence interval.

So, z = 2.326

(a) Construct a 98% confidence interval for the mean height of all college students.

$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

(b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centime- ters?

Error would be

$\dfrac{\sigma}{\sqrt{n}}\\\\=\dfrac{6.9}{\sqrt{50}}\\\\=0.976$

Hence, a) (176.76,172.24), b) 0.976.

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2 years ago