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3 years ago

PLEASE HELP ME ITS DUE REALLY SOON PLZZZZ

Mathematics

1 answer:

Yuliya22 [10]3 years ago

4 0

Answer:

1) 5x + 4x²(2x + 7) - 6x² - 9x

= 5x + 8x³ + 28x² - 6x² - 9x

= 8x³ + 22x² - 4x

2) the answer is 2x³ + 17x² + 25x - 50

3) the answer is y = 4x² + 14x + 18

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6.Madeline made the wooden steps shown. What is the volume of the steps? The wooden steps have two parts, both of which are rect

Lelu [443]

Answer:

840 cubic inches

Step-by-step explanation:

Given:

The wooden steps have two parts.

Both of which are rectangular prisms.

The top part is 6 inches tall, 5 inches wide and 10 inches long.

The bottom part is 6 inches tall, 9 inches wide and 10 inches long.

Question asked:

What is the volume of the steps?

Solution:

For top part

Length = 10 inches

Width = 5 inches

Height = 6 inches

As we know:

$Volume\ of\ rectangular\ prism =length\times width\times height$

$=10\times5\times6=300\ cubic\ inches$

For bottom part

Length = 10 inches

Width = 9 inches

Height = 6 inches

Similarly

$Volume\ of\ rectangular\ prism =length\times width\times height$

$=10\times9\times6=540\ cubic\ inches$

Volume of two steps = 300 + 540 = 840 cubic inches

Therefore, the volume of the steps are 840 cubic inches.

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3 years ago

babymother [125]

The second one, fourth one, and sixth one are true.

Hope this helps!

8 0

3 years ago

Your international diplomacy trip requires stops in thailand, singapore, hong kong, laos, and bali. how many possible itinerarie

Stells [14]

I would say there would be 5 itineraries ie one each for Thailand, Singapore, Hong Kong, Laos and Bali though for the countries Thailand and Laos there may be more than one stop so there would be a minimum of 5 itineraries.

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3 years ago

Please help! I don't know what the reasons would be for statements 3 and 4

bezimeni [28]

3 = AIA ( Alternate Interior Angles)
4 = Definition of AIA

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3 years ago

at a grocery store, an uncooked beef roast is on sale for $5.99/lb. At the same grocery store, prepared roast beef is available

-Dominant- [34]

Answer:

$7.58/lb

Step-by-step explanation:

raw roast: $5.99 per lb

deli roast: $2.99 for 100g

We know the price per lb of the raw roast.

Let's find the price per lb of the deli roast.

1 lb = 454 grams

454 grams / 100 grams = 4.54

1 lb is 4.54 times 100 g

If we multiply the price of 100g of deli roast by 4.54, we get teh price per lb.

$2.99/lb * 4.54 = $13.57/lb

raw roast: $5.99/lb

deli roast: $13.57/lb

difference in price of 1 lb: $13.57 - $5.99 = $7.58

Answer: $7.58/lb

3 0

3 years ago

Read 2 more answers