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3 years ago

Joe says 4.02 x 0.3 is bout 12. Does this make sense? Explain your thinking

2 answers:

7 0

Think: 4.02 is about 4 and 0.3 is about 1/3. 4 times 1/3 is 4/3, or about 1.33. So 12 is 'way off. It's always wise to estimate what your answer should look like.

svlad2 [7]3 years ago

4 0

This does not make sense as you are multiplying 4.02 by a number less that 1, so the product will become smaller. By actual calculation, this will be 1.206. Hope this helps.

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3 ( 2m - 1 ) - 5m ≤ -1 Please help

Rudiy27

3 ( 2m - 1 ) - 5m ≤ -1

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3 years ago

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4+7x=7(x+1) <br> Find each solutions please help

julia-pushkina [17]

Answer:

no solution

Step-by-step explanation:

Given

4 + 7x = 7(x + 1) ← distribute

4 + 7x = 7x + 7 ( subtract 4 from both sides )

7x = 7x + 3 ( subtract 7x from both sides )

0 = 3 ← not possible

This indicates the equation has no solution

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3 years ago

Penny says that the equation x³-8=0 has only one solution x=2. Use the fundamental theorem of algebra to explain to her why she

Airida [17]

Answer:

She is incorrect

Step-by-step explanation:

The fundamental theorem of algebra states that if a polinomial has a degree n, therefore has n roots. To fidn these roots the use of complex number imay be necesary .

For the equation, degree is 3, so there are 3 solutions.

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3 years ago

What is the answer to 8ab-2b+ab-b

lora16 [44]

8ab-2b+ab-b
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3 years ago

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Three angles are in the ratio 2 : 3 : 5 The smallest angle is 50 degrees Work out the sizes of the other two angles

Oxana [17]

Since the smallest angle is 50 degrees, then divide 50 by 2 (because of the ratio) and you get 25. Now you can multiply 25 by 3 and 25 by 5 to get the remaining angles which would be 75 degrees and 125 degrees.

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