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aleksandrvk [35]
3 years ago
10

In a certain chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains 646 grams of copper. How many gram

s of zinc does it contain?
Mathematics
1 answer:
klasskru [66]3 years ago
5 0
Chemical and enlargement of reduction in okay 12
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Find the area. Please help im begging! ( Multiple choice )
Stels [109]

Answer:

  • B) 700.6
  • A) 440

Step-by-step explanation:

<u>Use formula:</u>

  • A = 1/2 Pa, where P-perimeter of the polygon, a- apothem

1)

  • A = 1/2(7*13.9)(14.4) = 700.56 ≈ 700.6

Correct choice is B

2)

  • A = 1/2(5*16)(11) = 440

Correct choice is A

5 0
3 years ago
Melissa asked 10 students how many courses they have taken so far at her college. Here is the list of answers.
almond37 [142]

Answer:

Step-by-step explanation:

The question has asked who has taken fewer than 15 courses

There are 4 options that are fewer than 15: 10, 8, 8, 13

4/10  (10 is total number of options/students)

To find the percentage you...

6 0
3 years ago
What is 4.3(v+2.5)=8.11+4v
True [87]

Answer:

-8.8

Step-by-step explanation:

We begin by simplifying the parenthesis through multiplication. Parenthesis is a structure which signals multiplication happening.

4.3(v+2.5)=8.11+4v\\4.3v+10.75=8.11+4v

We now begin combining like terms across the equal sign by performing the inverse or doing the opposite. Move first the 8.11 by subtracting it from both sides.

4.3v+10.75-8.11=8.11-8.11+4v\\4.3v+2.64=4v

Now, move 4.3v across by subtracting it from both sides.

4.3v-4.3v+2.64=4v-4.3v

2.64=-0.3v

Finally, we divide both sides by the coefficient of v.

\frac{2.64}{-0.3} =\frac{-0.3v}{-0.3} \\-8.8=v

6 0
3 years ago
PLEASE HELP. FUNCTIONS AND RELATIONS. PROVIDE ANSWER OPTION A,B,C OR D? THANKS!!
baherus [9]

Step-by-step explanation:

please mark me as brainlest

6 0
2 years ago
Please help. It’s due today
vladimir1956 [14]

Answer:

There's nothing there I believe you forgot to add a link just add or create another question and i'll see what I can do :)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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