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tangare [24]
2 years ago
5

What number is half-way between twenty-one and fifty-three?

Mathematics
2 answers:
navik [9.2K]2 years ago
6 0
32

Hope this helped :)
inna [77]2 years ago
3 0

Answer:

32

Step-by-step explanation:

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Classify each angle of the degrees
zhuklara [117]

Answer:

acute

right angle or obtuse

obtuse

Step-by-step explanation:

those are the answers

6 0
2 years ago
The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 269 day
fenix001 [56]

Answer:

a) 279 b)254

Step-by-step explanation:

Mean = 269 days

standard deviation = 8 days

let n be the pregnancy lenght.  

using normal distribution formula

z = (n – mean)/ standard deviation

n = z * standard deviation + mean

Now, z values for the top 12% has to be found using a z table.

The top 12% means 88% of area under the curve. In this case z = 1,176

n = 1,176 * 8 + 269

n = 278.4 = 279

The bottom 3% means 97% of area under the curve. In this case z = -1,882

n = -1,882 * 8 + 269

n = 253.94 = 254

6 0
3 years ago
What is the probability of choosing a card from a deck of cards that is a heart or a nine? ​
Mila [183]
8 out of 52. There are 4 nine cards and 4 heart cards. There are 52 cards in the standard deck. So it is an 8 out of 52 chance that you will choose either a heart or a nine.
3 0
3 years ago
Match the gig ratio with the approximate decimal number Round to nearest 10
adell [148]

Answer:

sin 30 sin 30 sin 30 sin 30

5 0
2 years ago
What’s the correct answer for this question?
Helen [10]

Answer:

( -1 , 1 )

Step-by-step explanation:

(x1,y1) = (5,9)

(x2,y2) = (-7,-7)

=(-7+5/2 , -7+9/2)

= (-1,1)

3 0
3 years ago
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