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3 years ago

Which property states that for all real numbers, x, y and z, if x = y and y = z, then x = z ?

Mathematics

1 answer:

Leto [7]3 years ago

4 0

Answer:

The transitive property of equality

Step-by-step explanation:

The transitive property states if a=b and b=c then a=c. If two things are equal and one of those two things is equal to another thing, then they all must be equal.

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3/5 divided by 4 plzz

LiRa [457]

Answer:

3/20, or 0.15

Step-by-step explanation:

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2 years ago

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How many pieces of wire 3.6cm long can be cut from a coil of 1m long?What is the length of the piece left over?

sp2606 [1]

Answer:

We can get 27 pieces of wire 3.6 cm long and have a piece 7/9 cm left over

Step-by-step explanation:

Find the "unit length" by dividing 1 m by 3.6 cm:

1 m

-----------

3.6 cm

Recall that 1 m = 100 cm. Multiply the following by the conversion factor 100 cm / 1 m:

1 m 100 cm

----------- * ----------------- = 27,7777777...

3.6 cm 1 m

We can get 27 pieces of wire 3.6 cm long and have a piece 7/9 cm left over (verify this by dividing 7 by 9 on a calculator).

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3 years ago

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A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a s

Umnica [9.8K]

Answer:

88.51 is the minimum score needed to receive a grade of A.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73

Standard Deviation, σ = 11

We are given that the distribution of exam grades is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.0793.

$P( X \geq x) = P( z \geq \displaystyle\frac{x - 73}{11})=0.0793$

$= 1 -P( z \leq \displaystyle\frac{x - 73}{11})=0.0793$

$=P( z \leq \displaystyle\frac{x - 73}{11})=0.9207$

Calculation the value from standard normal z table, we have,

$P(z \leq 1.410) = 0.9207$

$\displaystyle\frac{x - 73}{11} = 1.410\\x =88.51$

Hence, 88.51 is the minimum score needed to receive a grade of A.

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3 years ago

Solve four tenths plus four ninths.

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Answer:

Step-by-step explanation:

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Ruthie wants to construct a line that passes through point P and is perpendicular to AB. What should Ruthie do first?

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Ruthie wants to construct a line that passes through point P and is perpendicular to AB. What should Ruthie do first?

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☆☆☆D) construct an arc with center P that intersects segment AB in two points

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