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Sophie [7]
3 years ago
12

Number 2

Mathematics
2 answers:
Andrej [43]3 years ago
8 0
2. A ) yes they form a line together
B) No they do not form a straight line
C) Yes are formed by the intersection of two straight lines
D) No
klemol [59]3 years ago
5 0
A. Yes, they make a 180° line
B. No, they do not make a 180° line
C. Yes, they are the same angle measurment, but across from each other
D. No. they are not the same angle measurment
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You have 8,640 grams of a radioactive kind of cesium. If its half-life is 30 years, how much
Vikki [24]

The mass of cesium left afer 120 years if the original mass of cesium is 8640 with an half-life of 30 years,  is 540 grams.

<h3>What is half-life?</h3>

This can be defined as the time taken for half the amount of a radioactive substance to decay.

To calculate the amount of cesium left after 120 years, we use the formua below.

Formula:

  • R' = R/(2^{T/t})............. Equation 1

Where:

  • R = Original amount of Cesium
  • R' = New amount of cesium
  • T = Total time
  • t = Half-life

From the question,

Given:

  • R = 8640
  • T = 120 years
  • t = 30 years

Substitute these values into equation 1

  • R' = 8640/(2^{120/30})
  • R' = 8640/2^{4}
  • R' = 8640/16
  • R' = 540 grams.

Hence, The mass of cesium left afer 120 years is 540 grams.

Learn more about half-life here: brainly.com/question/25750315

4 0
2 years ago
Can somebody help me in this question? It would be very appreciated! :)
Fiesta28 [93]

Answer:

see explanation

Step-by-step explanation:

The area (A) of a rectangle is calculated as

A = width × length

let width be w then length is 2w + 3 ( 3 more than twice the width ), then

A = w(2w + 3) ← distribute

   = 2w² + 3w

When w = 4 , then

A = 2(4)² + 3(4)

   = 2(16) + 12

    = 32 + 12

     = 44 ft²

6 0
3 years ago
MATH REASONING: A swimmer's time in the 100-meter backstroke is 58 seconds when rounded to the nearest whole number. Name the fa
NeTakaya
The fastest time is 57.50 and the slowest time is 58.49.
8 0
3 years ago
2 2/3 * 3/4 answer that ​
Nataly_w [17]

answer = 2

You can just use a calculator unless you need to show your work

5 0
3 years ago
Can someone pleaseeee help if you’re correct I’ll give u brainlist
nadezda [96]

Answer:

4

Step-by-step explanation:

this is an equilateral triangle, meaning all sides and angles are the same

5 0
2 years ago
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