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Ainat [17]
3 years ago
10

Use distribute property and simplify Help me please​

Mathematics
2 answers:
koban [17]3 years ago
6 0

Step-by-step explanation:

must calculate the number in ( ) first before calculate the number in [ ]

- - > +

+ + > +

+ - > -

- + > -

stellarik [79]3 years ago
5 0

Answer:

104

155

180

Step-by-step explanation:

an easy way is to solve what is in the parenthesis then multiply by the outside number

but if you need to use the distributive property:

1. 4 x (20 - -6)

(4 x 20) - (4 x -6) = 80 - -24 = 80 + 24 = 104

2. -5 x (24 - -7)

(-5 x 24) - (-5 x -7) = -120 - 35 = 155

3. 12 x (-30 + 45)

(12 x -30) + (12 x 45) = -360 + 540 = 180

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GrogVix [38]

Answer:

210 cm cubed

Step-by-step explanation:

5 x 6 x 7 = 210

7 0
2 years ago
the letters of the word independent are written on individual card and the cards are put into a box a card is selected and then
puteri [66]

Answer:

<em>The probability of obtaining the letter p twice is 1/121</em>

Step-by-step explanation:

<u>Probability of Recurring Events</u>

There are 11 letters in the word 'independent', one of which is the letter 'p'.

When those letters are written on individual cards and they are put into a box, there are 11 different choices to pick at random.

This means the individual probability of getting a 'p' is:

\displaystyle P_1=\frac{1}{11}

The card is reinserted into the box, leaving the sample space unaltered, thus the second card has the same probability:

\displaystyle P_2=\frac{1}{11}

We'll use the multiplication rule. Just multiply the probability of the first event by the second.

\displaystyle P=P_1*P_2=\frac{1}{11}*\frac{1}{11}

\displaystyle P=\frac{1}{121}

The probability of obtaining the letter p twice is 1/121

6 0
2 years ago
If a=3, b=-5 fond the value of (2a+3b) (4a sq- 6ab+9b square)​
snow_lady [41]

Step-by-step explanation:

(2a+3b)(4a²-6ab+9b²

(2a+3b){(2a)²-2a×3b+(3b)²}

Because (a³+b³)=(a+b)(a²-ab+b²)

Therefore,

(2a+3b){(2a)²-2a×3b+(3b)²}

=(2a)³+(3b)³

By substituting the values , we get

  • (2a)³+(3b)³
  • (2×3)³+(3×(-5))³
  • 6³+(-15)³
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4 0
3 years ago
Help me pls ty :D<br> 助けてください
beks73 [17]

Answer: Me don’t know

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Use the commutative law of addition to find an expression equivalent to 7(c+3)
Vlada [557]

Answer:

7c+21

Step-by-step explanation:

multiply 7 by c  and 7 times 3

7c and 21

7c+21

5 0
3 years ago
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