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3 years ago

Whats 9 x 10 please help

Mathematics

2 answers:

KengaRu [80]3 years ago

6 0

Answer:

9 × 10 = 90

Step-by-step explanation:

hope it helps

have a nice day

Shalnov [3]3 years ago

5 0

Answer:

it’s 21

have a good day mane

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Write an equation of a line that passes through the point (7, 3) and is parallel to the line y = negative 2 over 3x + 3.

alexandr1967 [171]

Parallel lines have the same slope, but different y-intercepts

The slope of both lines is -2/3

To find the equation that passes through (7, 3) we can use the point-slope formula: y - y1 = m (x - x1)

y - (3) = (-2/3) (x - (7))

y - 3 = -2/3x + 4 and 2/3

y = -2/3x + 7 and 2/3

y = -2/3x + 7.67

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3 years ago

Find the number of ways to listen to four CDs from a selection of 8 CDs. A) 1680 B) 336 C) 70 D) 50 pls aslo explain why..

777dan777 [17]

Answer:

a) 1680

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Step-by-step explanation:

Explanation:-

Given data the number of CD' s n = 8

We have to selected '4' CD' s from total '8' CD's

By using permutations

The number of ways to listen to four CDs from a selection of 8 CDs.

= $8_{P_{4} }$

we know that

$n_{P_{r} } = \frac{n!}{(n-r)!}$

$8_{P_{4} } = \frac{8!}{(8-4)!} = \frac{8 X 7 X 6 x 5 X 4!}{4!} = 1680$

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3 years ago

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marishachu [46]

$\text {Hi! To solve this problem you must...}$

$\text {Do Keep Change Flip (KCF):}$

$\text {Keep: -3/8}$

$\text {Change: / into *}$

$\text {Flip: 1/2 into 2/1}$

$\text {Your new problem should be -3/8*2/1}$

$\text {The Final Step is to Multiply:}$

$\text {Note: When Multiplying Fractions you multiply Numerator by Numerator}$

$\text {and Denominator by Denominator}$

$\text {-3/8*2/1=}$

$\fbox {-6/8}$

$\text {Best of Luck!}$

$\text {-LimitedX}$

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DerKrebs [107]

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multiply by density to get 2.14x10^6

multiply by percentage to get 6.63x10^4 g of NaCl (66.3 kg)

Step-by-step explanation:

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