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2 years ago

9

Which expressions are equivalent to (5⋅x)⋅3 ? Drag and drop the equivalent expressions into the box. 3⋅(5⋅x)5⋅3+x⋅35⋅(x⋅3)15x5⋅3

⋅x⋅3

1 answer:

aivan3 [116]2 years ago

8 0

Okay, so here are the answers..

1. 3 • (5 • x)

2. 5 • (x • 3)

3. 15x

You're welcome, and I took the test. :T

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Step-by-step explanation:

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1 year ago

Given the polynomial 21x 4 + 3y - 6x 2 + 34 What polynomial must be subtracted from it to obtain 29x 2 - 7 ? What polynomial mus

fredd [130]

Answer:

1. 21x⁴+3y-35x² + 41

2. -21x⁴-3y+6x² + x

Step-by-step explanation:

When adding and subtracting polynomials , you can use the distributive property to add or subtract the coefficients of like terms.

1. The polynomial is 21x⁴ + 3y -6x² + 34

To obtain polynomial 29x² -7 , we must subtract some polynomial from it.

Let that polynomial be k.

So, 21x⁴ + 3y -6x² + 34 - k = 29x² -7

k = 21x⁴ + 3y - 6x² +34 - 29x² +7 = 21x⁴ + 3y - 35x² + 41

2. To obtain a first degree polynomial, let that polynomial be x +34

So, 21x⁴ + 3y - 6x² + 34 + K = x + 34

K = x + 34 - 21x⁴ -3y + 6x² - 34

= -21x⁴ - 3y + 6x² + x

6 0

2 years ago

An item cost $480 before tax , and tge sales tax is $9.60

elena-s [515]

Answer:

0.02 ; 2%

Step-by-step explanation:

Given :

Cost of item = $480

Tax amount on item = $9.60

The sales tax rate = tax amount on item / cost of item

Sales tax rate = $9.60 / $480 = 0.02

As a percentage :

0.02 * 100% = 2%

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2 years ago

Escribe la expresión para "El producto de 5 y z".

bekas [8.4K]

Answer:

5yz

Step-by-step explanation:

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8 0

2 years ago

Same question just with picture

-BARSIC- [3]

Answer:

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Step-by-step explanation:

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3 0

2 years ago