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d1i1m1o1n [39]
3 years ago
13

Simplify: 3(2x-y)-(5x+4y-2) Please show steps

Mathematics
2 answers:
il63 [147K]3 years ago
7 0

Answer:

6 x ^2 − 5 x y − 4 y ^2

Step-by-step explanation:

Expand  

( 2 x + y ) (3 x − 4 y )

using the FOIL Method.

Apply the distributive property.

2 x ( 3 x − 4 y ) + y ( 3 x − 4 y )

Apply the distributive property.

2 x ( 3 x )+ 2 x (− 4 y ) + y ( 3x − 4 y )

Apply the distributive property.

2 x ( 3 x ) + 2 x( − 4 y ) + y ( 3 x) + y ( −4 y )

Simplify and combine like terms.

6 x ^2 − 5 x y − 4^ 2

Gemiola [76]3 years ago
6 0

Step-by-step explanation:

so it is 3×2=6 3×y=3y so here it 6-3 =3

5+4=9-2=7

so 7-3=4

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D. -6.24, -4.03, -1.82, 0.39, ... Find the 20th term.
Gemiola [76]

Answer:

the 20th term of the sequence is 35.75

6 0
3 years ago
At the movies, we had 286 people buy tickets. The adult tickets were $12 and the children's tickets were $4. The total sold was
Elina [12.6K]

103 adults and 183 children's attended

<em><u>Solution:</u></em>

Let "a" be the number of adults attended

Let "c" be the number of children attended

Cost of 1 adult ticket = $ 12

Cost of 1 children ticket = $ 4

At the movies, we had 286 people buy tickets

Therefore,

number of adults attended + number of children attended = 286

a + c = 286 ---- eqn 1

The total sold was $1968

Therefore,

number of adults attended x Cost of 1 adult ticket + number of children attended x Cost of 1 children ticket = 1968

a \times 12 + c \times 4 = 1968

12a + 4c = 1968 ------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

From eqn 1,

a = 286 - c -- eqn 3

<em><u>Substitute eqn 3 in eqn 2</u></em>

12(286 - c) + 4c = 1968

3432 -12c + 4c = 1968

-8c = 1968 - 3432

-8c = -1464

8c = 1464

<h3>c = 183</h3>

<em><u>Substitute c = 183 in eqn 3</u></em>

a = 286 - 183

<h3>a = 103</h3>

Thus 103 adults and 183 children's attended

6 0
4 years ago
What is 9 x 10-2<br> as an ordinary number? Give your answer as a decimal.
DochEvi [55]

Answer:

0.09

Step-by-step explanation:

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3 years ago
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Which is bigger 6 7/8 or 7 5/6?
Mandarinka [93]
7 5/6 is larger because 7 is bigger than 6

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3 years ago
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