3 years ago

NEED HELP ASAP THIS IS A TEST will mark brainlest NO LINKS

Mathematics

1 answer:

Nataly_w [17]3 years ago

8 0

-371 7/24
From quizlet made from balletskye20 with 16 terms

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If set A has 4 elements and B has 3 elements then set n(AXB) is a) 12 b) 14 c) 24 d) 7

Karo-lina-s [1.5K]

Answer:

The correct option is a.

Step-by-step explanation:

Given information:

Number of elements in set A = 4

Number of elements in set B = 3

We need to find n(A × B). It means we have to find the number of elements in set A × B.

If P and Q are two sets with elements m and n respectively, then the number of element in the set P × Q is m × n.

$n(A\times B)=n(A)\times n(B)$

$n(A\times B)=4\times 3$

$n(A\times B)=12$

The value of n(A × B) is 12. Therefore the correct option is a.

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3 years ago

A box of cereal contains 512 grams of sugar

sasho [114]

Then? You didn't type the full question

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3 years ago

Wren bought a baseball card last year for $2.25. This year the price dropped to $.45. What was the percent of decrease in the pr

const2013 [10]

The price:
- last year: $2.25
- this year: $.45
The decrease: $2.25 - $.45 = $1.80
2.25 : 1.80 = 100 : x
2.25 x = 180
x = 180 : 2.25
x = 80
Answer:
The percent of decrease is A ) 80%

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3 years ago

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liraira [26]

LolAnswer:

Step-by-step explanation:

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3 years ago

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If x ¤ y = (x + y)² - (x - y)² <br> Then √5 ¤ √5 =

Hoochie [10]

$x\ \diamond\ y=(x+y)^2-(x-y)^2=x^2+2xy+y^2-(x^2-2xy+y^2)\\\\=x^2+2xy+y^2-x^2+2xy-y^2=4xy\\\\\sqrt5\ \diamond\ \sqrt5=4\cdot\sqrt5\cdot\sqrt5=4\cdot5=20$

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3 years ago