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3 years ago

Which of these shapes have the same perimeter

Mathematics

1 answer:

Snezhnost [94]3 years ago

5 0

Answer:

A) B and C

Step-by-step explanation:

To find the perimeter, add up the lengths of all the sides.

For shape A: 16+16+1+1= 34

For shape B: 8+8+2+2= 20

For shape C: 5+5+5+5= 20

Shapes B and C both have a perimeter of 20. The answer is A, B and C.

I hope this helps!

___________________________________________________________

The other answer is not correct because they are finding the area of the rectangles.

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Round 578.683 m 47.3333 kg and 789.5cm to four significant figures

Pani-rosa [81]

Answer: 578.7 m 47.33 kg. 789.5 cm

Step-by-step explanation: every whole number is a sig fig (1-9). Count the first four whole numbers and if the last whole number can be rounded up using the rounding rule (5 or more bumps the previous # up), then round

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3 years ago

The manufacturer of a certain type of new cell phone battery claims that the average life span of the batteries is 500 charges;

maxonik [38]

Answer:

a. 0

b. Yes

c. The manufacturers claim is not plausible

d. 0.3446

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4 years ago

How much smaller is the sum of the first 1000 natural numbers than the sum of the first 1001 natural numbers?

aleksandr82 [10.1K]

ANSWER

1001

EXPLANATION

The sum of the first n - natural numbers is

$S_n= \frac{n}{2} (2a + d(n - 1))$

The sum of the first 1000 terms is

$S_{1000}= \frac{1000}{2} (2(1) + 1(1000 - 1))$

$S_{1000}=500 (1001)$

$S_{1000}=500500$

The sum of the first 1001 terms is

$S_{1001}= \frac{1001}{2} (2(1) + 1(1001 - 1))$

$S_{1001}= 1001 \times (501)$

$= 501501$

The difference is

$501501 - 500500= 1001$

5 0

3 years ago

Read 2 more answers

How do you write 219% as a fraction or mixed number in simplest form

Georgia [21]

It is 2 19/100, because the two is 200%, and the 19 is a prime number. hope this helps

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3 years ago

The rate of change of a bacteria (N) with respect to time is directly proportional to itself. When t=0, N=500. When t=4, N=3000.

Lyrx [107]

Fine the average rate of change by the difference in N over the difference in T:

3000 - 500 / 4-0 = 2500 / 4 = 625

This means for every 1 T, N = 625.

Now multiply 625 by 8:

625 x 8 = 5000

When T = 8 N = 5,000

The decay rate can be found by dividing -ln(2) by the half life.

Decay rate = -ln(2) / 5715 = -0.00012

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3 years ago