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anyanavicka [17]
3 years ago
11

H + 12 = 31 equal what equation h=

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
3 0
Move 12 to the other side, making it negative
h=31-12
h=19
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Slav-nsk [51]
The first answer is 25x + 45 = c
The second one is y=3x
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6 0
2 years ago
The scores on an achievement test are normaly distributed with mean µ = 100 and standard deviation σ = 100. What should the scor
ser-zykov [4K]

Answer:

the student should score atleast 229 to be among the top 10%.

Step-by-step explanation:

in terms of the normal distribution, and if the table that you're using calculates the area of the normal distribution from the mean to a point x, only then what we are actually finding the value 'x' at which the z-score is at 40% (the rest 50% is already skipped by the table)

P(0.4) = \dfrac{x - \mu}{\sigma}

after finding the the value at this z-score, we can find the value of x at which the score is in the top 10% range.

we can find the z-score either using a normal distribution table or calculator. (but be sure what area is it calculating)

looking at the table the closest value we can find is, 0.4015 at z = 1.29 ((it is above 40% because we want to be in the top 10% range)

P(0.4015) = \dfrac{x - 100}{100}

1.29 = \dfrac{x - 100}{100}

x = 1.29(100) + 100

x = 229

the student should score atleast 229 to be among the top 10%.

7 0
2 years ago
PicnicTech markets three versions of its Picnic Egg Boxes: the Golden Deluxe, containing 3 gold eggs and one plain egg; the Regu
viktelen [127]
I think im pritty sure its A

4 0
3 years ago
Cory earns $9 per hour working at the local library. If she works 5 hours on Saturday how much money will she earn?
Rzqust [24]
Cory will earn 45$ on saturday. 
5 0
3 years ago
If the density of the full can is 1.2 g/cc what is the mass ?
Natali5045456 [20]
Mass=Density*Volume
Density=1.1 g/cc
Volume of a cylinder: <span>π*r^2*h
</span>Radius of the top of the can: 3.57
Volume of this can: 480.47
480.47*1.1=528.517
If I'm correct the mass of this can should be 528.517 
4 0
3 years ago
Read 2 more answers
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