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Nataly_w [17]
3 years ago
7

Simplify: (4x2 + 21xy – 7y2) + (10x2 + 11y2 – 20). HELP PLEASEEE

Mathematics
1 answer:
sergejj [24]3 years ago
5 0
Ok so the answer is 8 + 21xy + 8y

Explanation:
U multiply and calculate then remove the opposites rewrite and calculate then remove the parentheses then u proceed to collect like terms

Hope this helps !!

Happy Christmas <33
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Plz help ill give u brainlist plz asap
elena-14-01-66 [18.8K]
Base area = 6 ( 1/2 x 6 x 5.2) = 93.6 cm²

Volume = base area x height = 93.6 x 17 = 1591.2cm ³

-------------------------------------------
Answer: Volume = 1591.2 cm³
-------------------------------------------
8 0
3 years ago
Need to solve for Y by filling in the blanks<br>(y +44)°, 86, (3y)°​
lapo4ka [179]
Answer:

1.89

Solution:

We have -44x - 86 = -3

First, we move the non x terms to the RHS of the equation. To do this, we add 86 to both sides.

Note: if a = b, then a + c = b + c
Therefore, -44x - 86 + 86 = -3 + 86

or, -44x = 83

Next, divide both sides by -44, which is the coefficent of x

Note: if a = b, then a ÷ c = b ÷ c
-44x
-44
=
83
-44

or, x = -1.89


Explaination:

This is right I guess
4 0
3 years ago
A coin is tossed twice. Let H represents heads, T represents tails, and the combination of the two letters represent the outcome
denis23 [38]

Answer:

{HH, HT, TH, TT}

Step-by-step explanation:

The set of all possible outcomes in tossing a coin twice is;

{HH, HT, TH, TT}

In the first toss the coin may land Heads. In the second toss the coin may land Heads or Tails. This can be represented as;

HH, HT

Heads in the first and second tosses. Heads in the first toss followed by a Tail in the second toss.

In the first toss the coin is also likely to land Tails. In the second toss the coin may land Heads or Tails. This can be represented as;

TH, TT

Tails in the first toss followed by a Head in the second toss. Tails in the first and second tosses.

Combining these two possibilities will give us the set of all possible outcomes in tossing a coin twice is;

{HH, HT, TH, TT}

4 0
4 years ago
Is 1/10 and 3/33 equivalent
Ostrovityanka [42]
1/10 = .1, and 3/33 = .0909090... it is equivalent if you estimate.
3 0
3 years ago
8/3 = 3 (c + 5/3) how to solve step by step
Ludmilka [50]

Answer:

Step-by-step explanation:

8/3=3(c+5/3)

multiply both sides by 3

8=9(c+5/3)

divide both sides by 9

8/9=c+5/3

subtract 5/3 from both sides

c=8/9-5/3

change 5/3 to 15/9

c=8/9-15/9

c=-7/9

7 0
3 years ago
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