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3 years ago

PLS HELP, I will mark u brainliest if u help me! first person gets it right and does it first.

Mathematics

1 answer:

Vilka [71]3 years ago

7 0

For a 4 by 4 cube, he needs 4 rows 4 high for 16 cubes in each row.

The back row is 3 x 4 = 12, so he needs 4 more for the back row,

The 3rd row he has 8, so needs 8 more.

The 2nd row he has 4 so needs 12 more,

The first row he has 2 so will need 14 more.

Total needed: 4 + 8 + 12 + 14 = 38 more cubes.

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Watch help video

amm1812

Answer:

Step-by-step explanation:

25 - 32 = -7 and 18 - 25 = -7

It means an arithmetic sequence with common difference d = -7

$a_n = a_1+d(n-1)\\\\a_1=32\\d=-7\\\\a_n=32+(-7)(n-1)\\\\a_n = 32-7n+7\\\\\underline{a_n=-7n+39}$

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3 years ago

9(5x) need help asap

dexar [7]

Answer:

45x happy to help ya :)

Step-by-step explanation:

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3 years ago

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#6 from the paper please

BabaBlast [244]

Answer:

EK = 9

Step-by-step explanation:

x + 11 = -5 + 2x -5 + 2x

x+11 = -10 + 4x

11 = 3x - 10

3x = 21

x = 7

EK =-5 + 2 × 7

EK = 14 - 5

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3 years ago

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Emily has 7 cups of water in a jug.If she drinks 2/3 of a cup every hour.How long would it take her to drink the whole jug

zepelin [54]

It would take her 10.5 hours to drink the whole jug.

Step-by-step explanation:

Given,

Cups of water in jug = 7

Water drunk every hour = $\frac{2}{3}$ of cup

Let,

x be the number of hours.

According to given statement;

$\frac{2}{3}x=7$

Multiplying both sides by $\frac{3}{2}$

$\frac{3}{2}*\frac{2}{3}x=7*\frac{3}{2}\\x=\frac{21}{2}\\x=10.5$

It would take her 10.5 hours to drink the whole jug.

Keywords: fractions, multiplication

Learn more about fractions at:

#LearnwithBrainly

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3 years ago

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kkurt [141]

Answer:

AQ1: Divide what she owed by 4

AQ2: -18

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