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Lynna [10]
2 years ago
5

What is the product?

Mathematics
2 answers:
ELEN [110]2 years ago
6 0

Answer:

- 81t² + 16

Step-by-step explanation:

Simply expand the equation by factoring

(9t-4)(-9t-4)    factor out negative sign

= -(9t - 4) (9t +4)

= -(9t + 4) (9t - 4)      recall a² - b² = (a+b) (a-b)

= - [ (9t)² - 4²]

= - ( 81t² - 16)

= - 81t² + 16

Kazeer [188]2 years ago
4 0

Answer:

2) -81t² +16

Step-by-step explanation:

(9t -4)(-9t -4) = (9t x -9t) + (9t x -4) + (-4 x -9t) + (-4 x -4)

                     = -81t² - 36t + 36t + 16

                     = -81t² + 16

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Answer:

3x + 70 − 7x ≥ 18

Step 1: Simplify both sides of the inequality.

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Step 2: Subtract 70 from both sides.

−4x + 70 − 70 ≥ 18 − 70

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Step 3: Divide both sides by -4.

−4x /−4  ≥  −52 /−4

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Answer:

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Step-by-step explanation:

Let there be x number of roses and x number of tulips initially at the store.  Each bouquet was made with 3 roses and 4 tulips. Assume that y bouquets were made in total.

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After the bouquets were all made, there were 30 roses and 18 tulips left in the store. This means, if we subtract number of roses that were used in bouquets from total number of roses, the result must be 30. Likewise, for tulips the result would be 18. This can be represented as:

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Step-by-step explanation:

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Step-by-step explanation:

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