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murzikaleks [220]
2 years ago
15

ANSWER PLSS! 3)

Mathematics
2 answers:
creativ13 [48]2 years ago
7 0

Answer:

78

Step-by-step explanation:

have fun!!!

Artist 52 [7]2 years ago
6 0

Answer:

20 I'm pretty sure it's right but if not sorry

Step-by-step explanation:

80x.2=16

16÷.8= 20

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7 L of an acid solution was mixed with 3 L of a 15% acid solution to make a 29% acid solution. What is the percent concentration
Setler [38]

well, let's say that the first solution is 7 liters and has "x" percent of acid, how much acid total in it? well, 7x, <u>keeping in mind that "x" is a decimal form</u>.

likewise, the second solution is 3 liters and has 15% acid, so how much acid is there in that one?  (15/100) * 3 = 0.45, so

\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{liters of }}{amount}\\ \cline{2-4}&\\ \textit{1st solution}&7&x&7x\\ \textit{2nd solution}&3&0.15&0.45\\ \cline{2-4}&\\ mixture&10&0.29&2.9 \end{array}~\hfill \implies 7x~~ + ~~0.45~~ = ~~2.9 \\\\[-0.35em] ~\dotfill\\\\ 7x=2.45\implies x=\cfrac{2.45}{7}\implies x=0.35~\hfill \stackrel{\textit{converting to \%}}{0.35\cdot 100}\implies \stackrel{\%}{35}

5 0
2 years ago
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-3(b – 7) I need a answer bad
guajiro [1.7K]
-3(b - 7)

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3 years ago
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How many digits from 10 to 1000 have each digit greater than its following digit?
saul85 [17]

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5 0
2 years ago
The author of Passage 1 indicates that becoming
Tasya [4]

The author of Passage 1 indicates that becoming adept at using the Internet can undermine the ability to think deeply.

<h3>What according to the author, becoming adept at using the Internet can cause?</h3>

Passage 1's author cites Patricia Greenfield's study, which discovered that people's use of screen-based technologies harmed their ability to acquire knowledge, perform "inductive analysis" and "critical thinking," and be imaginative and reflective.

The author of Passage 1 concludes that people's ability to think "deeply" is hampered by their use of screen-based technologies.

Option A, C, and D are incorrect because the author of Passage 1 does not address how people's health, social contacts, or self-confidence are affected by using the Internet.

The author of Passage 1 suggests that becoming proficient with the Internet can impair one's ability to think deeply.

Therefore, the correct answer is option B) undermine the ability to think deeply.

To learn more about reading comprehension, refer to:

brainly.com/question/23343740

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