ok hi guys i need help with another one asap so how much of a radioactive kind of tellurium will be left after 50 minutes if the half life is 25 min and you start with 88 grams ? Please explain how you arrived at answer then i can mark you as brainliest anyways so far I put 88(1/2) i have no idea what to do next

Answers

Answer 1

Answer: We went through this all last night, and you wrote an equation that was almost perfect. The correct equation is: Amount left = (original amount) times (1/2)^(number of half-lifes). Remember ?

Answer 2

Answer: I'm not a mathor science genius but ill give it my best shot. So if there is 50 min total an the hald life occurs every 25 min, that would mean there would be 2 half life occurences. So wouldn't it be 88(1/2)(1/2)?

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Please, help me with this question. It is due soon. Also have a great evening! And remember if you don’t know the answer or don’t understand it and just want points don’t even bother to write a “ANSWER” down because it is irritating and annoying and it lastly wastes my time and has no help towards me!!!!

Answers

Answer:

Step-by-step explanation:

The point that represents the data in the fourth column has the coordinates: (13, 9)

How many points would be shown on a scatter plot of these data?: 5

13,9 is the answer ok I hope this helps

Final quetion on this website :D it's worth 30 points :) But there are 3 questions. Anwser them all completely please. I also give thanks and if you need help just pm me

Answers

1. enlarged by a scale factor of 10/1 or basically he made the legnth and the width 10 times bigger
4 times 10=40
6 times 10=60
new dimentions are 40 inches by 60 inches

2.
A: normally we write ratios in (distance):(time) so
marie=325:20
tamara=255:15
B. proportional means that if you conver to fraction and simplify, they will be equall so
325/20=16.25/
255/15=17/1
they are not equal and therefor NOT proportional

3. so we use slope intercept form which is y=mx+b where m=slope and b=y-intercept
so we find the equation
slope=-4/3
we are given the point (0,16)
the y-intercept is where x=0
in (x,y) form, (0,16), x=0 and y=16
b=16
y=-4/3x+16
the x intercept is where the line crosses the x axis or when y=0 so set y=0 so
0=-4/3x+16
subtract 16 from both sides
-16=-4/3x
multiply both sides by -1 because I don't like negatives
16=4/3x
multiply both sides by 3
48=4x
divide both sides by 4
12=x
solution=(12,0)

it will cross at (12,0)

ANSWERS
1.40 inches by 60 inches
2. A.marie=325:20 tamara=255:15
B.They are NOT proportonal
3. the point (12,0)

1) 4* 10 : 6 * (10) = 40:60 inches.
2) a. $(325)/(20)$ : $(255)/(15)$ Now reduce
$(65)/(4)$ : $(17)/(1)$ The ratios are not proportional.
3) [0, 16], [3, 12], [6, 8], [9, 4], [12, 0]
The answer is [12, 0]

Test points for the intervals are shown. Select the test points that make the inequality true. x = –15 x = 0 x = 30

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Answer: 1 and 3

x = –15

x = 30

Step-by-step explanation:

Answer: A and C

Step-by-step explanation:

trust me bro

The reference angle for 305

Answers

Answer:

55°

Step-by-step explanation:

The angle 305° is in the fourth quadrant

To find the related acute angle ( the reference angle ) subtract from 360°

reference angle = 360° - 305° = 55°

A restaurant has 10 stools at the counter and several tables with 4 chairs each. If n represents the number of tables, which equation can you use to find how many tables are needed to seat 90 customers in the restaurant