2 years ago

7x−1)+(−x−2) pls help

Mathematics

1 answer:

Olegator [25]2 years ago

5 0

Answer:

-7x²-13x+2

Step-by-step explanation:

-7x²-14x+1x+2

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BRAINLIST

777dan777 [17]

Answer:

Naomi must buy a minimum of 5 blocks of cream cheese.

Explanation:

2.75 pounds = 44 ounces

44 oz divided by 8 oz (per block) =
5.5 blocks of cream cheese

She already has 4 oz of cream cheese so subtract 1/2 block of cream cheese.

She needs to buy at least 5 blocks.

5 0

2 years ago

Read 2 more answers

Cos(2α)*sin(α-β)-cos(β-α)*sin(2α)

Hunter-Best [27]

Answer:

Step-by-step explanation:

cos (2α)*sin (α-β)-cos(β-α)*sin(2α)
cos (β-α)=cos {-(α-β)}=cos (α-β)

[cos (-x)=cos x]

sin(α-β)*cos (2α)-cos (α-β)*sin (2α)=sin (α-β-2α)=sin (-α-β)

=sin {-(α+β)}

=-sin (α+β)