1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Advocard [28]
4 years ago
7

A certain element has a half life of 4.5 billion years. a. You find a rock containing a mixture of the element and lead. You det

ermine that 60​% of the original element​ remains; the other 40​% decayed into lead. How old is the​ rock? b. Analysis of another rock shows that it contains 5​% of its original​ element; the other 95​% decayed into lead. How old is the​ rock?
Mathematics
1 answer:
oee [108]4 years ago
7 0
The rock is about 7
You might be interested in
Is -36/12 an integer whole number natural rational or irrational ?
jeka57 [31]

Answer:

integer

Step-by-step explanation:

5 0
3 years ago
Write the equation in slope intercept form.
astraxan [27]

\bf y+2=\cfrac{1}{3}(x-6)\implies y+2=\cfrac{1}{3}x-2 \\\\\\ y=\cfrac{1}{3}x-4\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}

5 0
3 years ago
Read 2 more answers
How many solutions exist for the system of equations graphed below?<br><br> Help please !
kiruha [24]

Answer:

none (0) ...

think of two lines (or chop sticks places on a table) ...

there are three (3) possible orientations that they can be in.

1) they cross each other at one point

2) they are on top of each other (they touch everywhere)

3) they are side by side (parallel)

in situation one we say we have a solution

in situation two we say there is an infinite solutions (the same line)

in situation three (your problem) we say there is no solution (parallel lines)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
PLEASE HELP ME PRETTTY PLEASE IM BEGGING
luda_lava [24]

Answer:

Least to Most Likely:

In this order:

Honor (1/10=10%)

Simple (30%)

Bonus (3/5=60%)

5 0
3 years ago
Read 2 more answers
Kai bought 120 shares of stock for $68.24 per share. He sold them nine months later for $85.89 per share. What was his capital g
nevsk [136]

Answer:

2118 dollars

Step-by-step explanation:

His capital gain is the difference in the (sell - buy) prices multiplied by the number of shares (120).

120 * (85.89 - 68.24) = 120 * 17.65 = 2118

The capital gain is a short term gain (held under a year)

The amount is 2118 dollars.

6 0
3 years ago
Other questions:
  • In the algebraic expression 7/y, what is the coefficient of y? Explain
    15·1 answer
  • I need some help with this problem.
    9·1 answer
  • What is the surface area?
    10·2 answers
  • What can be said about the relationship between triangles and circle
    11·2 answers
  • How many solutions does this equation have?<br><br> 9x + 2<br> 3<br> = 3x + 3
    6·2 answers
  • A rectangular piece of metal is 8 in. longer than it is wide. Squares with sides 3 in. long are cut from the four​ corners, and
    7·1 answer
  • It rained 0.8 inches on Monday. On Tuesday, it rained 0.34 inches less than on Monday. How much did it rain on Tuesday?
    5·1 answer
  • Please help!<br> i will reward brainliest
    8·2 answers
  • What is a geometric sequence
    12·1 answer
  • Please solve correctly
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!