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qaws [65]
3 years ago
9

Which of the following is equivalent to the expression below?

Mathematics
1 answer:
Mashcka [7]3 years ago
7 0
\sqrt{-98} = \sqrt{(-49 x 2)} = \sqrt{-49} \times sqrt{2} = 7i\sqrt{2}
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Jay simplified the expression -3 × (3 + 12 ÷ 3) - 4. For his first step, he added 3 + 12 to get 15. What was Jay’s error?
ale4655 [162]

Answer:

He should have divided 12 ÷ 3 first.

Step-by-step explanation:

Following PEMDAS/BODMAS, the first step is solving equations in parentheses. Since the parentheses contain a multi-step equation, Jay needs to follow PEMDAS for inside the parentheses as well. Instead of adding 3+12 first, he should have done division first (12  ÷ 3).

How the problem should be solved:

-3 × (3 + 12 ÷ 3) - 4

-3 × (3 + 4) -4

-3 × 7 - 4

-21 - 4

-25

3 0
3 years ago
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The royals softball team played 75 games and won 60 of them. what percent of the games did they win?
ch4aika [34]

Answer:

✓ They lost $$29.3%$$ of the softball games. Explanation: Percentage of games lost: $$"Number of games lost"/"total games" * 100%$$ So $$22/75 * 100% = 29.3%" "$$ [the answer]

Step-by-step explanation:

3 0
4 years ago
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Ashely’s math average decreased 12 points to 78. Then she completed an extra credit and raised her final average by 5 points.
Usimov [2.4K]

Answer:

90-12+5 = 83

Step-by-step explanation:

6 0
3 years ago
Solve for r.
rjkz [21]

Step-by-step explanation:

- 2 {x}^{2}  - 9 =  - 107 \\  -  {2x}^{2}  =  - 98 \\  {x}^{2}  = 49 \\ x =  \sqrt{49}  \\ x = 7 \\  { \boxed{lesser :  \:  - 7}} \\ { \boxed{greater :  \:  + 7}}

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3 years ago
a 120 lb. person would weigh about 20 lb. o. the earth's moon. A 150 lb. person would weigh 28 lb. on lo, a moon of Jupiter. Use
Naddik [55]
I think it would look like this 20:28 or 120:150 
8 0
4 years ago
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