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Mademuasel [1]
3 years ago
15

Which of the following expressions is correct?

Mathematics
2 answers:
Vlad [161]3 years ago
8 0

Answer:

the answer is A

Step-by-step explanation:

Dovator [93]3 years ago
4 0

Answer:

A

Step-by-step explanation:neg X negative = positive

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the number of the students of a school was 640 last year and it is 800 by how many percent is the number increased​
yuradex [85]

Answer:

The number of students would have increased by 25%.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The wildflowers at a national park have been decreasing in numbers. There were 1200 wildflowers in the first year that the park
bonufazy [111]

Year      New flowers

1                 1200

2                 300

3                   75

There were 1200 wildflowers in the first year that the park started tracking them. Since then, there have been one fourth as many new flowers each year

Initially there are 1200 flowers and start decreasing by \frac{1}{4}

So first term is 1200 and common ratio is \frac{1}{4}.

Its a geometric sequence so summation becomes

i =1∑ ∞ 1200(\frac{1}{4})^{i-1}

Now we find the sum

We use sum formula

Sum = \frac{a}{1-r}

Where a is the first term , a= 1200

r is the common ratio , r= 1/4

Sum = \frac{1200}{1-(\frac{1}{4})}

Sum = \frac{1200}{\frac{3}{4}}

Sum = 1600 wildflowers

4 0
4 years ago
What is the range and domain of this graph?
DochEvi [55]

Answer:

Range: (-∞,∞)

Domain: (-∞,∞)

Step-by-step explanation:

Remember that if there are arrows that the function continues.

7 0
3 years ago
What’s the answer and work for this? Someone please telllllllll meeee!!!!
HACTEHA [7]

Answer: 25

Step-by-step explanation: The median is the average of the middle two numbers and if the median will be 17.5 then the sum of the middle numbers will be 35, and when we arrange the numbers in the least to greatest order we realize that 10 will be one of the middle two numbers when a number is added, and so the other number must be 25. Hope this helped!

3 0
3 years ago
Best and Correct answer gets BRAINLIEST!!!
Karo-lina-s [1.5K]

Answer:

The constant of proportionality (k) is 1/5.

Step-by-step explanation:

The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other.

Hope this helps and I hope u have an Amazing day!!

6 0
3 years ago
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