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Molodets [167]
2 years ago
6

Which equation shows the commutative property of addition?

Mathematics
1 answer:
kipiarov [429]2 years ago
7 0

Answer:

C

Step-by-step explanation:

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What is the length of MN?<br><br> 58 cm<br> 75 cm<br> 88 cm<br> 116 cm
Brums [2.3K]

Answer:

The length of MN is 58 cm.

Step-by-step explanation:

In the given figure we can see that  AM = MB

So, M is the mid point of AB.

Also, BN = NC ( Consider the given figure )

So, N is the mid point of BC.

Since M and N are the midpoints of AB and BC .

So, by mid segment theorem which sates that the segment joining the midpoints of any two sides of a triangle will be parallel to the third side of the triangle and half its length.

⇒ MN is parallel to AC

and  

MN = \frac{1}{2} AC

MN = \frac{1}{2} (116)

MN = 58 cm

Thus , the length of MN is 58 cm.


5 0
3 years ago
Read 2 more answers
5. A company sells small, colored binder clips in packages of 20 and offers a money-back guarantee if two or more of the clips a
SOVA2 [1]

Answer:

a) Binomial.

b) n=20, p=0.01, k≥2

The probability hat a package sold will be refunded is P=0.0169.

Step-by-step explanation:

a) We know that

  • the defective probability is constant and independent.
  • the sample size is bigger than one subject.

The most appropiate distribution to represent this random variable is the binomial.

b) The parameters are:

  • Sample size (amount of clips in the package): n=20
  • Probability of defective clips: p=0.01.
  • number of defective clips that trigger the money-back guarantee: k≥2

The probability of the package being refunded can be calculated as:

P(x\geq2)=1-(P(x=0)+P(x=1))\\\\\\P(x=k) = \dbinom{n}{k} p^{k}q^{n-k}\\\\\\P(x=0) = \dbinom{20}{0} p^{0}q^{20}=1*1*0.8179=0.8179\\\\\\P(x=1) = \dbinom{20}{1} p^{1}q^{19}=20*0.01*0.8262=0.1652\\\\\\P(x\geq2)=1-(0.8179+0.1652)=1-0.9831=0.0169

6 0
3 years ago
The restaurant ordered small pictures and large pictures to decorate the restaurant. 6 times as
lyudmila [28]

Answer:

125

Step-by-step explanation:

25 x 6 = 150

150 - 25

7 0
2 years ago
Read 2 more answers
the manager at a hotel wants to know how often do his costomers rent boats at the nearby lake.Which sampling method will give va
Korvikt [17]

Answer: ❤️Hello!❤️He asks every tenth customer who checks into the hotel. Hope this helps! ↪️ Autumn ↩️

6 0
3 years ago
The pythagorean theorem is true for some right triangles but not all
horrorfan [7]
The pythagorean theorem works for all right triangles. Just make sure it IS a right triangle.
8 0
3 years ago
Read 2 more answers
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