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3 years ago

Evaluate the following expression.2 + (3 - 2 x 2) x 1

Mathematics

1 answer:

irga5000 [103]3 years ago

8 0

Answer:

2+(3-2x2)x1

2+(3-4)x1

2+(-1)x1

Step-by-step explanation:

multiplica primeiro dentro dos parentes, efetua a operação dos parenteses, olha os sinais, realiza a subtração e depois a multiplicação final.

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PLEASE HELP!!! Jim made a table to show the length of his walking sticks.

Natasha2012 [34]

Answer:

Stick 2: $\frac{1}{2}$

Stick 3: $\frac{4}{10}$

Step-by-step explanation:

To determine which of the lengths are less than ⅗ meters, you would compare each given length with ⅗ meters.

Stick 1: Comparing ⁹/10 and ⅗

Find The common denominator of both fractions. 10 is the common denominator. Multiply the numerator and denominator of ⅗ by 2 to create a fraction equivalent to ⁹/10.

Thus,

$\frac{3*2}{5*2} = \frac{6}{10}$

Compare the numerator of $\frac{9}{10}$ and $\frac{6}{10}$ .

9 is greater than 6. This means $\frac{9}{10}$ > $\frac{6}{10}$ .

Therefore, $\frac{9}{10}$ > $\frac{3}{5}$

Stick 2: comparing ½ and ⅗

Common denominator = 10

Make both fractions equivalent to each other as follows,

$\frac{1*5}{2*5} = \frac{5}{10}$

$\frac{3*2}{5*2} = \frac{6}{10}$

5 < 6. This means, $\frac{5}{10}$ < $\frac{6}{10}$ .

Therefore, $\frac{1}{2}$ < $\frac{3}{5}$

Stick 3: comparing ⁴/10 and ⅗

Common denominator = 10

Make the fractions equivalent as follows,

$\frac{4*1}{10*1} = \frac{4}{10}$

$\frac{3*2}{5*2} = \frac{6}{10}$

4 < 6. This means, $\frac{4}{10}$ < $\frac{6}{10}$ .

Therefore, $\frac{4}{10}$ < $\frac{3}{5}$

Stick 4: comparing ⅘ and ⅗

Common denominator = 5

Since both denominators are already the same, both fractions are equivalent. Comparing their numerator, 4 > 3. Therefore, ⅘ > ⅗.

3 0

3 years ago

Explain how you can find the opposite of the opposite of any number without using a number line

sergiy2304 [10]

You can solve this by multiplying any negative by a negative 1 ex. -(-11) = 11

6 0

3 years ago

Read 2 more answers

Radioactive technetium-99m is often used in diagnostic medicine because it has relatively short half-life but lasts long enough

elixir [45]

Answer:

0.08 ml

Step-by-step explanation:

Given that

The half life is 6 hours

The injection is 2.5 ml

And, it remains in the body till 30 hours

We need to find out that how much of the radioactive material remains in the body

So,

= 2.5 × (1 ÷ 2) ^(30 ÷ 6)

= 2.5 × (1 ÷ 2) ^5

= 0.0781

= 0.08 ml

6 0

3 years ago

4/5(2x+5)−4=1 x = 1 1/4 x = 1 2/5 x = 5/8 x = 3 1/5

tia_tia [17]

The answer is x=5/8. The reason for this is when you divide it equal 0.625 then when you multiply that by 2 it equals 1.25. After you do that you add 5 which is 6.25. Now we divide 4/5 which is 0.8. Now, we multiply 6.25x0.8=5. 5-4=1. Therefore your answer is 5/8. Hope this helps :)

5 0

3 years ago

Which expression is equal to 3x-(2x+4)+5 a. x+9 b. x+1 c. 5x+9 d. 5x+1

Vitek1552 [10]

Answer:

b. x+1..........................

3 0

3 years ago

Evaluate the following expression.2 + (3 - 2 x 2) x 1​

Evaluate the following expression.2 + (3 - 2 x 2) x 1