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Natali [406]
3 years ago
7

Christine took 3 tests and had an average of 76. She has one more test to take and she wants an average of 80. What is the lowes

t score she can get on the last test? 10pts
Mathematics
1 answer:
amm18123 years ago
6 0

Answer: She has to score a minimum of 92 marks to take her average to 80

Step-by-step explanation:

Let the equation be

Three months total = 76 x 3 = 228

(x + 228) / 4 = 80

x + 228 = 80 x 4

x = 320 - 228

x = 92

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You discovered 1000 grams of an unknown element called Coolium 23 that has a half life 23 days. How long will it take for you to
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Answer:

13.8 days

Step-by-step explanation:

In this case we can solve it by means of a rule of three, knowing the amount of life for 1000 grams, it must be proportional for 600 grams, like this:

grams   days

 1000     23

 600        x

x = 600 * 23/1000

x = 13.8

which means that for the 600 grams it would be an average life of 13.8 days.

4 0
3 years ago
Please answer this question now
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Answer:

A≈422.37

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3 0
3 years ago
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Answer:

1. This graph is not a function, because for every y there are more than one x.

2. This graph is not linear because it is not a straight line.

3. It took them 6 hours to get to their destination.

4. The destination was 325 miles away.

5. They might have stopped at a restaurant to eat.

6 0
2 years ago
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Which graph shows the solution to the system of equations 2x + y = 4 and 3x - 2y = 6?
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4 0
3 years ago
A geologist visits 40 volcanoes in Alaska and California.how many volcanoes does the geologist visit in California and how many
solong [7]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

I don't know for sure, but there are a bunch of different options. Here they are:

Step-by-step explanation:

1 + 39

2 + 38

3 + 37

4 + 36  

5 + 35

6 + 34

7 + 33

8 + 32

9 + 31

10 + 30

11 + 29

12 + 28

13 + 27

14 + 26

15 + 25

16 + 24

17 + 23

18 + 22

19 + 21

20 + 20

Those are the options of how many volcanoes that they could have visited. They could have visited 23 volcanoes in Alaska and 17 in California. Who knows?

California only has 20 volcanoes, and Alaska has 40, so your answer will be one of these options. Hope this helps!

5 0
3 years ago
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