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Roman55 [17]
4 years ago
12

Please help I will mark brainliest!!!!!!

Mathematics
1 answer:
balu736 [363]4 years ago
7 0
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What is the perimeter of rectangle ABCDABCD? (1) The longer side of the rectangle is 2 meters shorter than its diagonal (2) The
Lelechka [254]

Answer:

(1) P=4a+4

(2) P=2a+4\sqrt{42}a

Step-by-step explanation:

Well, let us call longer side b, shorter side a and diagonal d. The perimeter of a rectangle is 2*(a+b). Let us write this formula as P=2*(a+b)

In (1) it is stated that b=a+2. Hence, the perimeter of the rectangle is P=2*(a+b). In terms of b, let us write (a+2). So P=2*(a+a+2)=4a+4.

In (2) it is stated that d/a=13 or d=13a. From Pythagorean theorem d^2=a^2+b^2. Hence, b^2=168a^2 or b=2\sqrt{42}a. Finally, P=2*(a+b)=2*(a+2\sqrt{42}a)=2a+4\sqrt{42}a

5 0
3 years ago
A number of students are evenly spaced around the circle. The fourth student is directly opposite the tenth student. How many st
natta225 [31]

Answer:

  • 12 students

Step-by-step explanation:

<u>Between the fourth and tenth there are:</u>

  • 9 - 4 = 5 students

<u>The total number is:</u>

  • 2 + 5*2 = 12 students
3 0
3 years ago
Brainliest?<br> YES brainliest! <br>Give me the answer in minutes and you get it.
NikAS [45]

Answer:

The answer is c. 4______

4 0
4 years ago
Read 2 more answers
Determine if the sequence is arithmetic or geometric, and find the common difference or ratio.
melamori03 [73]

Answer:

The sequence is arithmetic with a common difference of -10

Step-by-step explanation:

From the question, we want to determine if the sequence is arithmetic or geometric

From the question

f(1) = 5

f(2) = -5

f(3) = -15

Mathematically for the common difference;

f(3) - f(2) = f(2) - f(1)

Since;

-15-(-5) = -5-5

-10 = -10

Since the common difference here is same , then the sequence is arithmetic with a common difference of -10

8 0
3 years ago
The city's central library has 72,864 books. The library has 72 bookcases. If each bookcase has room for the same number of book
marin [14]

Answer:

1012

Step-by-step explanation:

DO 72,864 divided by 72 :D

3 0
3 years ago
Read 2 more answers
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