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Paraphin [41]
3 years ago
9

Whats the area of 4.2 m and 3.6 m

Mathematics
1 answer:
Kazeer [188]3 years ago
8 0
4.2m * 3.6m = 15.12m²
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Ludmilka [50]

the square root of 81 is 9

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Help and explain explain !!!!!!!!!!
tigry1 [53]

Answer:

x=-1\text{ or }x=11

Step-by-step explanation:

For a=|b|, we have two cases:

\begin{cases}a=b,\\a=-b\end{cases}

Therefore, for 18=|15-3x|, we have the following cases:

\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}

Solving, we have:

\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}.

Therefore,

\implies \boxed{x=-1\text{ or }x=11}

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3 years ago
Chelsea shows her work in finding the solution to 4x−5=2+3(x−3). After checking her answer in the original equation, she found t
Ainat [17]

quita los paréntesis: 4x-5=2+3(x-3) multiplica paréntesis X3, elimina el paréntesis: 4x-5=2+3x-9 calcule: 4x-5= -7+3x mueve los términos y te quedará así: 4x-3x-5=-7

agrupe los términos semejantes: x=-7+5

calcular la suma, y el resultado final sería: x= -2

Step-by-step explanation:

espero te sirva

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3 years ago
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Tim wants to buy several pairs of jeans. He compares the prices at a store in his neighborhood and at an online store. He finds
iogann1982 [59]

Answer:

2 orders

Step-by-step explanation:

Step one:

given data

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Cost = $24

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Cost= 22+6x

For 1 order

the online store will cost

Cost= 22+6*1

Cost= 22+6

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For 2 orders

The local shop cost

Cost= 24*2= $48

The online store will cost

Cost= 22+6*2

the online store will cost

Cost= 22+12

Cost= $34

Hence Tim should place at least 2 orders if he wants to buy online

7 0
3 years ago
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A triangle has ∠A, ∠B, and ∠C.<br> ∠B is 20° more than ∠A.<br> ∠C is double ∠B.<br> How big is ∠A?
san4es73 [151]

Answer:

30°

Step-by-step explanation:

∠A + ∠B + ∠C = 180

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4∠A = 120

∠A = 30

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