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Valentin [98]
3 years ago
12

Does anybody know this

Mathematics
1 answer:
Dmitrij [34]3 years ago
6 0

Step-by-step explanation:

The equation used to determine the amount of radioactive material left is

A = A_0(2)^{-t/HL}

We are have the following given quantities:

t = 30 seconds

A_0 = 50 grams

HL = 6 seconds

Plugging these into our equation we get

A = (50\:\text{grams})(2)^{-(30s/6s)}

\:\:\:\:= (50\:\text{grams})(0.03125)

\:\:\:\:= 1.56\:\text{grams}

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Please help 15 points thank you
Furkat [3]

Answer:

9

Step-by-step explanation:

The common difference is what we add each time,

a2 -a1

15-6 =9

Lets check with

a3-a2

24-15 = 9

We add 9 each time, so 9 is the common difference

(Hint: it is the number multiplied by the variable)

3 0
3 years ago
A desk drawer is shaped like a rectangular prism. The height of the drawer is 7 inches. The bottom of the drawer has an area of
NISA [10]

Answer:

We know the volume formula of rectangular prism is:

Volume = Length × Width × Height

We are given:

Volume = 1428 in³

Height = 6 in

Length = 17 in

Width = p

Apply the formula!

1428 = 6 × 17 × p

1428 = 102p

Divide by 102 on either side to isolate p

p = 14  

The width is 14 inches

Step-by-step explanation:

4 0
3 years ago
Recall that the graph of a function f is the graph of the set of ordered pairs (x,f(x))
Simora [160]
y=f(x)+12
7 0
4 years ago
The formula: y-y1 = m (x-x1) is known as:​
jarptica [38.1K]

Answer:

point slope form.

Step-by-step explanation:

this is different from slope intercept form. use these when dealing with cartesian graphs using slope and points along x, y

5 0
3 years ago
Hiiiiii peoples<br><br> Solve the inequality 6x^2-x&lt;2 please show all steps
Orlov [11]

Answer:(3x−2)⋅(2x+1)

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2"   was replaced by   "x^2".  

STEP

1

:

Equation at the end of step 1

 ((2•3x2) -  x) -  2

STEP

2

:

Trying to factor by splitting the middle term

2.1     Factoring  6x2-x-2  

The first term is,  6x2  its coefficient is  6 .

The middle term is,  -x  its coefficient is  -1 .

The last term, "the constant", is  -2  

Step-1 : Multiply the coefficient of the first term by the constant   6 • -2 = -12  

Step-2 : Find two factors of  -12  whose sum equals the coefficient of the middle term, which is   -1 .

     -12    +    1    =    -11  

     -6    +    2    =    -4  

     -4    +    3    =    -1    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -4  and  3  

                    6x2 - 4x + 3x - 2

Step-4 : Add up the first 2 terms, pulling out like factors :

                   2x • (3x-2)

             Add up the last 2 terms, pulling out common factors :

                    1 • (3x-2)

Step-5 : Add up the four terms of step 4 :

                   (2x+1)  •  (3x-2)

            Which is the desired factorization

Final result :

 (3x - 2) • (2x + 1)

4 0
4 years ago
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