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3 years ago

Chose the correct property

Mathematics

2 answers:

AysviL [449]3 years ago

7 0

Answer:

B) Associative Property Of Multiplication

Step-by-step explanation:

The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product.

Therefore, changing the grouping of (8x3) or (3x4) does not change the product.

vodka [1.7K]3 years ago

3 0

Answer:

B) Associative Property of Multiplication

Step-by-step explanation:

The associative property states you can change where the parentheses (grouping terms) are in a multiplication statement, and you'll get the same product.

More generally:

(a * b) * c = a * (b * c)

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In a class of 30 students there are 17 girls. two students are picked randomly to represent the class in the SRC. determine the

Alla [95]

Answer:

See below in bold,.

Step-by-step explanation:

There are 30-17 = 13 boys in the class.

a. Prob(First is a boy ) = 13/30 and Prob( second is a boy = 12/29).

As these 2 events are independent:

Prob( 2 boys being picked) = 13/30 * 12/29 = 26/145 or 0.179 to the nearest thousandth.

b. By a similar method to a:

Prob ( 2 girls being picked) = 17/30 * 16/29 = 136/435 = 0.313 to the nearest thousandth.

c. Prob (First student is a boy and second is a girl) = 13/30 * 17/29 = 221/870.

Prob ( first student is a girl and second is a boy) = 17/30 * 13/29 = 221/870

These 2 events are not independent so they are added:

Prob( one of the students is a boy) = 2 (221/870 = 221/435 = 0.508 to the nearest thousandth.

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3 years ago

Which expression is the equivalent

Gwar [14]

I think you are correct

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3 years ago

Find the greatest common factor. 8j, 6j

VLD [36.1K]

Answer:

Step-by-step explanation:

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3 years ago

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14 What value of x makes this equation true? 12x - 15 = 6 - 3x Plsss help me and hurry

rodikova [14]

Answer:

1.4

Step-by-step explanation:

12x+3x=15+6

15x=21

X=21/15

X=7/5 or 1.4

5 0

3 years ago

The value V of a Porsche 718 Cayman that is t years old can be modeled by V(t) = 420,000(0.965)t (a) What would be worth the car

nordsb [41]

Answer:

A. V (2) = $ 391,114.50

B. t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days

Step-by-step explanation:

Given formula:

V(t) = 420,000 * (0.965)^t

A. What would be worth the car′s worth in 2 years?

V(t) = 420,000 * (0.965)^t

We replace t by 2, as follows:

V(2) = 420,000 * (0.965)²

V(2) = 420,000 * 0.931225

V (2) = $ 391,114.50

B. In how many years will the car be worth $325,000?

V(t) = 420,000 * (0.965)^t

We replace V(t) by 325,000, as follows:

325,000 = 420,000 * (0.965)^t

325,000/420,000 = (0.965)^t

0.77381 = (0.965)^t

t = log 0.965(0.7738)

t = log 0.7738/log 0.965

t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days

0.2 years = 0.2 * 12 = 2.4 months

0.4 months = 0.4 * 30 = 12 days

7 0

3 years ago