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3 years ago

Test Scores 83 74 91 94 70 81 82 Consider Frank's math test scores for the semester. Find the interquartile range of the scores.

Mathematics

2 answers:

viva [34]3 years ago

6 0

It would be 17

I need one more brainliest until next rank... thx!

Yanka [14]3 years ago

6 0

17 !!!!!!!!!!!!!!!!!!!!!!

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Calculate the slope of a line that passes through the points (2, 6) and (4, 2) *

irina [24]

Answer:

-2

Step-by-step explanation:

Given:

Points (2, 6) and (4, 2)

Slope formula:

m = (y2-y1)/(x2-x1)

Using the given points:

m = (2- 6)/(4 - 2) = -4/2 = -2

5 0

4 years ago

If P and Q are two sets then n( P-Q) means ?

Lapatulllka [165]

$\huge{\mathbb{ \tt{ANSWER}}}$

I shall use the symbol U for union

^ for intersection

~ for complement

The property of set subtraction states that for any sets X and Y, X-Y = X ^ Y~

That is in words, X throw away Y is the same as the intersection of X and the complement of Y

or X and anything NOT in Y

At the SET level, the proof looks like this:

(P-Q) U (Q-P) = « given

(P^Q~) U (Q ^ P~) = « property of set subtraction

(P U Q) ^ (P U P~) ^ (Q~ U Q) ^ (Q~ U P~) = « distributive property

(P u Q) ^ (Q~ U P~) = « Union of any set with it's complement is the universal

set which gets dropped by any intersection of a non-universal set

(P u Q ) ^ (Q ^ P)~ = « De Morgan's Law

(P u Q) - (Q ^ P) = « property of set subtraction

(P u Q) - (P ^ Q) « commutative property

At the ELEMENT level, the proof looks like this:

» Proves left side is subset of right side

If x is in (P-Q) U (Q-P) then x is in (P-Q) OR x is in (Q-P)

If x is in P-Q then x is in P but not in Q.

Then X is in P U Q.

Since x is not in Q, x is NOT in P ^ Q

Hence x is in P U Q but NOT in P^Q, which

means it is an element if (P U Q) - (P ^ Q)

Therefore x is an element of the set defined by the right side, which means (P-Q) U (Q-P) is a subset of (P U Q) - (P ^ Q)

« proves right side is subset of the left side

If x is an element of (P U Q) - (P ^ Q) then

x is in (P U Q) but NOT in (P^Q)

Since x is in P U Q, x is in P OR x is in Q.

Since x is NOT in (P^Q) then x is NOT in BOTH P and Q.

Hence x is in either P or Q but not both.

If x is in P, then x is not in Q, so x is in P-Q.

Therefore x is in (P-Q) U (Q-P).if x is in Q, then x is not in P, so x is in Q-P.Therefore x is in (Q-P) U (P-Q).There x is an element of set defined by the left side, which menas (P u Q)-(P ^Q) is a subset of (P-Q) U (Q-P).

#CarryOnLearning

#LetsEnjoyTheSummer

8 0

3 years ago

Solve the equation x2 + 6x +8= 0. Someone please help ASAP will give brainliest

Alik [6]

Answer:

x = -2,-4

Step-by-step explanation:

if you check it it will be 0 on both so its not both its just one but you can chose

5 0

3 years ago

Evaluate without using a mathematical table 1000(√0.0128÷200)

lapo4ka [179]

Answer:

0.5656854249

Step-by-step explanation:

1000(0.0128/200)

1000(0.11314/200)

1000(0.0005656854)

=0.5656854249

5 0

3 years ago

The value of a algebraic expression y-1 for y = -5is

kifflom [539]

The Answer Is Probably, "-6" .

4 0

3 years ago