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g100num [7]
3 years ago
6

a rectangle has a width that is 7 more than its length and an area of 30. Find the length and width of the rectangle

Mathematics
1 answer:
just olya [345]3 years ago
5 0

Answer:

length = √ 210/7

width = √ 210

Step-by-step explanation:

Area = 30

length = x

width = 7x

30 = 7x^2

30/7 = x^2

√ 210/7 = x

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5 pts
ruslelena [56]

Answer:

{8, 24, 72, 216, 648}

Step-by-step explanation:

Geometric sequence:

In a geometric sequence, the quotient of consecutive terms is always the same, that is, each term is the previous term multiplied by the common ratio.

In this question:

First element is 8, common ratio of 3. So

Second term: 8*3 = 24

Third term: 24*3 = 72

Fourth term: 72*3 = 216

Fifth term: 216*3 = 648

So the answer is {8, 24, 72, 216, 648}

4 0
3 years ago
bryans aquarium is 6 feet long, 4 feet wide and 5 feet high, how many cubic feet of water can the tank hold?
SashulF [63]
6 x 4 x 5 = 120 cubic feet of water
7 0
3 years ago
A researcher interested in vocabulary development obtains a sample of twenty 3-year old children to participate in a research st
Andreyy89

Answer: b) statistic

Step-by-step explanation:

  • Population = A large groups of individuals sharing the same or similar characteristic by the point og study.
  • Sample  = It is a subset of population .
  • Parameter = It is measure of characteristic in population.
  • Statistic =  It is measure of characteristic in sample.

Since the average score was taken by the group of 20 which is nothing but the sample.

That means, the average score is an example of<u> statistic</u>.

Hence, the correct option is b) statistic .

4 0
3 years ago
Jolie is thinking of two numbers. the first number is three more than twice the second number. the sum of the two numbers is 22.
larisa86 [58]
X + y = 22
x = 2y + 3

this would be ur system of equations
6 0
3 years ago
Of the 10,000 participants in the Cooper Run/Walk, 42% were runners and one-third of the runners were female. Sally, a female ru
Aleks [24]

Answer: 140 female runners

Step-by-step explanation:

First find out the number of runners:

= 42% * 10,000

= 4,200 runners

Then find out the number of female runners:

= 4,200 * 1/3

= 1,400 female runners

Sally finished faster than 90% of the female runners which means that 10% finished faster or at the same time as her.

= 10% * 1,400

= 140 female runners

5 0
3 years ago
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