If 8 g of a radioactive substance are present initially and 2 yr later only 4 g remain, how much of the substance will be present after 5 yrs?

Answer:

Square root of 49

The missing side is 7

Step-by-step explanation:

With the Pythagorean theorem.

25^2= 625

24^2= 576

Square root of 49=7

The missing side is 7

Answer:

Step-by-step explanation:

whats the equation?

Answer:

P = 7

Step-by-step explanation:

46+8=54

54-5=49

49÷7=P

Answer:

The gas can for $2.40

Step-by-step explanation:

Because if you buy twelve gallons it will only be 28.80 instead of buying the 12 gallon tank for $33.39

Answer:

5(5v+4)=17v+8v+9+9

25v+20=25v+18

25v-25v=18-20

0v=-2

i think soooo

this question is very very irrelevant

Step-by-step explanation:

Answer: For Plato users

Step-by-step explanation:

X = -28 ,-9 ,-2 ,-1 ,0

f^-1(×) = -2 , -1 , 0, 1, 2

Just flip the x and y

Just took the test .

Inverse of a function is reverse mapping (if possible). The completed table would look like as shown below:

Suppose that the given function is [tex]f: X \rightarrow Y[/tex]

Then, if function 'f' is one-to-one and onto function(a needed condition for inverses to exist), then, the inverse of the considered function is [tex]f^{-1}: Y \rightarrow X[/tex] such that:

[tex]\forall \: x \in X : f(x) \in Y, \exists \: y \in Y : f^{-1}(y) \in X[/tex] (and vice versa).

It simply means,inverse of 'f'  is undo operator, that takes back the effect of 'f'

Inverse of inverse function is function itself.

For the given case, if the function (take x = -2) maps x = -2 to f(x) = -28, then the inverse of this function will take back -28 to -2.

This logic tells us that:

[tex]\begin{array}{cccccc}x&-28&-9&-2&-1&0\\f^{-1}(x)&-2&1&0&1&2\end{array}[/tex]

(x simply denotes input). For inverse function, those values which were outputs of [tex]f(x)[/tex]  are now going to serve as input to inverse of [tex]f(x)[/tex] which is [tex]f^{-1}(x)[/tex]

Thus, the completed table would look like:

[tex]\begin{array}{cccccc}x&-28&-9&-2&-1&0\\f^{-1}(x)&-2&1&0&1&2\end{array}[/tex]

Learn more about inverse functions here:

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Answer:

ENGLISH PLZ

Step-by-step explanation:

I CANT UNDERSTAND spanish

Answer:

Universe of Fun

Journal Entries are used to record transactions:

January 1, 2021:

Debit Cash Account $692,353

Debit Bonds Discount $57,647

Credit Bonds Payable $750,000

To record the issue of 9% bonds, semiannual interest, that mature in 15 years.

June 30, 2021:

Debit Interest Expense $35,672

Credit Discount Amortization $1,922

Credit Cash Account $33,750

To record the interest expense and discount amortization.

December 31, 2021:

Debit Interest Expense $35,672

Credit Discount Amortization $1,922

Credit Cash Account $33,750

To record the interest expense and discount amortization.

Step-by-step explanation:

Bonds Payable = $750,000

Bonds issued at a discount = $692,353

Bonds discount = $57,647 ($750,000 - $692,353)

Interest rate = 9%

Interest expense, semiannually = $33,750 ($750,000 * 9%)/2

Maturity of bonds = 15 years

Bonds discount will be amortized over 15 at $3,843 per annum ($57,647/15) on straight-line basis

Bonds discount semiannually = $1,922

b) Bonds discount arise as Universe of Fun issues the $750,000 bonds for $692,353 (less by $57,647).  This means that the bondholders are paying less than the face value, but will be repaid the full face value at maturity.

Answer:

number 2

Step-by-step explanation:

Answer:

Step-by-step explanationfor changing °F to °Cuse the formula

°C=(F-32)5/9

=(88-32)5/9

=56×5/9

=280/9

=31.11

So the value of nearest tenth is 31°c

Answer:

5 thousand and 5 hundred.  

Step-by-step explanation:

Answer:

uno dos tres

Step-by-step explanation:

f = muffins

4 muffins perpack

36 sold

[tex]\frac{36}{4}[/tex] 36 divided by 4 = 9

9 what...

9 packs of muffins

i think thats how you do it but i no thats what the answer is

Answer:

no

Step-by-step explanation:

the sum of 4+7+9+12=32

32/4= 8

8 is not part of the sequence. Therefore its not arithmetic.

Hello!

Slope formula:

y2-y1/x2-x1

y2: 8

y1: 1

x2: -7

x1: -6

Plug given values into the equation:

8-1/-7 - (-6)

Subtract

7/-1

Divide

-7

The slope is -7

Answer:

-7

Step-by-step explanation:

Since we have 2 points, we can use the slope formula

m = ( y2-y1) /(x2-x1)

    = ( 8-1)/( -7 - -6)

   = ( 8-1) / ( -7+6)

   = 7/ -1

  = -7

Answer:

3.6 × 10^9

Step-by-step explanation:

When multipliying two numbers in scientific notation, the exponents in the factor of 10 will be added when the two expressions are multiplied.

Thus (1.2 ⋅ 10^28) ⋅ (3 ⋅ 10^−19) = ( 1.2 × 3 )

( 10^28 × 10^-19 ) = 3.6 × 10^(28-19) = 3.6 × 10^9

Answer:

Team score in first game < 19

Step-by-step explanation:

Point Scored in Third Game =X

Points Scored in First Game = X+6 (6 more than third game)

Points Scored in Second Game = 23

Total Points ={( First Game) +( Second Game) + (Third Game)} < 55

                      { ( X+6) + (23) + (X)} < 55

                       X+29+X < 55

                       2X+29 < 55

                       2X< 55-29

                       2X < 26

                         X <26/2

                         X<13

So the point scored in First game is: (X+6)

Where X < 13

So the point in First game is < 19

Answer:

x = 2

Step-by-step explanation:

-1.5x + 33 = 30

-1.5x = 30 - 33

x = -3 / -1.5

x = 2

Answer:

the first person gave u the right answer so head on ur going to get it right. wish u well

Answer:

He spent $110.00 on both originally

Step-by-step explanation:

Add both prices too get 165

Then use the equation  =  

cross multiply to get 150x=16500

Divide 16500 by 150 to get x alone

x= 180

Four Times you'd say it

The numbers where there are 3 digits from 0 to 40 are

3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, and 39

The digit 3 will be written thirteen times.

It is the way of representing numbers on a line where there is an equal unit between each number.

We have,

Numbers from 0 to 40.

There is always a digit 3 in every ten consecutive numbers.

From 0 to 40 we have 4 ten consecutive numbers.

- 0 to 10

- 10 to 20

- 20 to 30

- 30 to 40

3, 13, 23, and 33. _____(1)

There is a digit of 3 in all the consecutive numbers from 30 to 39.

i.e 30, 31, 32, 33, 34, 35, 36, 37, 38, and 39. ____(2)

From (1) and (2) we have,

3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, and 39

Thus,

The digit 3 will be written thirteen times.

Learn more about number line here:

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#SPJ2

Answer:

10,800

Step-by-step explanation:

9,000+ 20%= 10,800

Answer:

θ = 36.9°, 90°, 216.9°, or 270°

Step-by-step explanation:

4 sin 2θ − 3 cos 2θ = 3

Use double angle formulas:

4 (2 sin θ cos θ) − 3 (cos²θ − sin²θ) = 3

8 sin θ cos θ − 3 cos²θ + 3 sin²θ = 3

Use Pythagorean identity:

8 sin θ cos θ − 3 cos²θ + 3 sin²θ = 3 (sin²θ + cos²θ)

8 sin θ cos θ − 3 cos²θ + 3 sin²θ = 3 sin²θ + 3 cos²θ

8 sin θ cos θ − 6 cos²θ = 0

2 cos θ (4 sin θ − 3 cos θ) = 0

2 cos θ = 0

θ = 90° or 270°

4 sin θ − 3 cos θ = 0

4 sin θ = 3 cos θ

tan θ = 3/4

θ = 36.9° or 216.9°

Answer:

π/2 = 90°

Step-by-step explanation:

Given that,

Radian measure = π/2

The formula used to convert radian measure to degree measure is given by :

[tex]\text{Degrees}=\dfrac{180^{\circ}}{\pi}\times \text{radians}\\\\=\dfrac{180^{\circ}}{\pi}\times \dfrac{\pi}{2}\\\\=90^{\circ}[/tex]

So, the degree matches for π/2 is 90°.

Answer: The table below represents a linear function f(x) and the equation represents a function g(x): x f(x) −1 -12 0 -6 1 0 g(x) g(x) = 2x + 6 Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x).

PART B: y=mx +b is slope intercept form of linear equation where m=slope and b =y intercept

slope for line for function f(x) =-5-(-1) / -1-0 =-5+1/-1=-4/-1=4  

y = 4x+b

3=4(1)+b

3=4+b

-1 =b

y=4x-1

f(x)=4x-1     slope = 4

g(x)=2x -7    slope = 2

b) y intercept for f(x) is -1

and g(x) is -7

so f(x) is having greater y intercept

Answer:

m∠1 = 63°

m∠2 = 49°

m∠3 = 87°

m∠4 = 44°

Step-by-step explanation:

From the given figure

∵ ∠2 and 49° are vertically opposite angles

∵ The vertical opposite angles are equal in measures

∴ m∠2 = 49°

∵ The sum of the interior angles of a Δ is 180°

∵ m∠1, m∠2, and 68° are interior angles of a Δ

∴ m∠1 + m∠2 + 68° = 180°

∵ m∠2 = 49°

∴ m∠1 + 49° + 68° = 180°

→ Add the like terms in the left side

∴ m∠1 + 117 = 180

→ Subtract 180 from both sides

∴ m∠1 = 63°

∵ ∠3 and 93° formed a pair of linear angles

∵ The sum of the measures of the linear angles is 180°

∴ m∠3 + 93° = 180°

→ Subtract 93 from both sides

∴ m∠3 = 87°

∵ 93° is an exterior angle of the triangle

∵ The measure of the exterior angle of a Δ at one vertex equals the sum

   of the measures of the opposite interior angles to this vertex

∵ ∠4 and 49° are the opposite interior angles to 93°

∴ 49° + m∠4 = 93°

→ Subtract 49 from both sides

∴ m∠4 = 44°

Answer:

0.32989690721

Step-by-step explanation:

Answer:

rounded to the nearest hundred: 0.33

Step-by-step explanation:

hope this helps :3

Answer:

b

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

2x2 = 4

3x2 = 6