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3 years ago

How we can find decimal between 2.15 and 2.17 ?

Mathematics

2 answers:

Bess [88]3 years ago

6 0

Find a number between 2.15 and 2.17 so one of the answers could be 2.16

Nadusha1986 [10]3 years ago

3 0

2.16-2.15=0.02

The difference is 0.02
To get the number between you divide the difference by 2 then add it to the lower number.
0.02/2=0.01

2.15+0.01=2.16

The number between 2.15 and 2.17 is 2.16

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AleksandrR [38]

Answer:

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32 + x + x = 180 (since the TOTAL angles of a triangle adds up to 180)

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What is the sum of the measures of the measures of the exterior angles of this triangle?

mylen [45]

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3 years ago

Use the distributive property to fill in the blank below.<br><br> 8 x (3+5)=( _ x 3 ) + ( _ x 5 )

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5 0

3 years ago

The proportion of U.S. births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control a

Dafna11 [192]

Answer:

Probability that at least 490 do not result in birth defects = 0.1076

Step-by-step explanation:

Given - The proportion of U.S. births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control and Prevention (CDC). A local hospital randomly selects five births and lets the random variable X count the number not resulting in a defect. Assume the births are independent.

To find - If 500 births were observed rather than only 5, what is the approximate probability that at least 490 do not result in birth defects

Proof -

Given that,

P(birth that result in a birth defect) = 1/33

P(birth that not result in a birth defect) = 1 - 1/33 = 32/33

Now,

Given that, n = 500

X = Number of birth that does not result in birth defects

Now,

P(X ≥ 490) = $\sum\limits^{500}_{x=490} {^{500} C_{x} } (\frac{32}{33} )^{x} (\frac{1}{33} )^{500-x}$

= ${^{500} C_{490} } (\frac{32}{33} )^{490} (\frac{1}{33} )^{500-490}$ + .......+ ${^{500} C_{500} } (\frac{32}{33} )^{500} (\frac{1}{33} )^{500-500}$

= 0.04541 + ......+0.0000002079

= 0.1076

⇒Probability that at least 490 do not result in birth defects = 0.1076

4 0

3 years ago