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m_a_m_a [10]
4 years ago
6

Pls answer with working out pls. thnx

Mathematics
1 answer:
siniylev [52]4 years ago
8 0
3) mean = (5×o+9×1+7×2+4×3+3×4+2×5)/30
= (0+9+14+12+12+10)/30
= 57/30 = 1.9

4)same way,mean = 76/32 = 2.38
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Solve, graph, and give interval notation for the compound inequality:
Feliz [49]

Answer:

The answer to your question is below

Step-by-step explanation:

Inequality 1

                        7(x + 2) - 8 ≥ 13

                        7x + 14 - 8 ≥ 13

                        7x + 6 ≥ 13

                         7x ≥ 13 - 6

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Inequality 2

                       8x - 3 < 4x - 3

                        8x - 4x < - 3 + 3

                               4x < 0

                                 x < 0 / 4

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See the graph below

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3 years ago
Describe a way to calculate 304-81 mentally by using reasoning other that the common subtraction algorithm. Then write a coheren
Natasha_Volkova [10]

Answer:

See explanation

Step-by-step explanation:

To subtract mentally 81 from 304, complete following steps:

<u>Step 1:</u> Write number 304 as

304=300+4\\ \\304=200+100+3+1\\ \\304=200+20+80+3+1

<u>Step 2: </u>Write number 81 as

81=80+1

<u>Step 3: </u>Now subtract 80 and 1 from number 304:

304-81=(200+20+80+1+3)-(80+1)\\ \\304-81=200+20+3\\ \\304-81=223

6 0
3 years ago
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