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ExtremeBDS [4]
3 years ago
6

Express each number in scientific notation. 18 8,888,800

Mathematics
2 answers:
Olenka [21]3 years ago
8 0
scientific\ notation:a\cdot10^n\ where\ a\in[1;\ 10)\ and\ n\in\mathbb{Z}\\==================================\\\\1\underbrace{8}_{\leftarrow1}=1.8\cdot10^{1}\\\\8\underbrace{,888,800}_{\leftarrow6}=8.888800\cdot10^6=8.8888\cdot106
frutty [35]3 years ago
8 0
<u />1.8\cdot10\\&#10;8.8888\cdot10^6&#10;
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Jeff and Kevin went to the fair with $20 each. They paid $6 for two rides, $2 for cotton candy, and bought two drinks at $3 each
Dvinal [7]

Answer:

Step-by-step explanation:

$40 - $6 - $2 - $6 = $40 - $14 = $26

6 0
3 years ago
Determine whether each relation is a function
Alex

Step-by-step explanation:

(2,4),(3,5),(4,6),(5,8) (1,4),(2,3),(3,-6),(-3,6)

is NOT a function, because some x values (2 and 3) have more than one associated result value (4, 3 and 5, -6).

(1,5),(1,7),(1,-5),(1,-7) (0,4),(1,4),(2,4),(3,4)

is NOT a function as the x value 1 has more than 1 associated result values (5, 7, -5, -7, 4).

x² = y + 1

y = x² - 1

this is a function. for any value of x we get exactly one result value.

xy = 1

y = 1/x

this is a function. for any value of x we get exactly one result value. but we do need to exclude x=0.

if we cannot do that, then it is NOT a function, because x=0 has no associated result value.

x = 3

is NOT a function, because although there is only one valid x value (3), there are infinitely many possible y result values associated with this x value (y can be "anything").

y = -2

this is a function. for any value of x we get exactly one result value (constantly -2).

7 0
3 years ago
6q-11=13 <br> What does q equal to?
IRISSAK [1]

Answer:

q=4

Step-by-step explanation:

Move all terms that don't contain q to the right side and solve. q=4

4 0
3 years ago
Read 2 more answers
Radioactive iodine treatment is so successful at treating hyperthyroidism that it has virtually replaced thyroid surgery. To the
vagabundo [1.1K]

Answer:

56 days

Explanation:

\sf Half \ Life : A  = A_O   \ x \ (\dfrac{1}{2} )^{\dfrac{t}{h} }

where A is final amount, Ao is initial amount, t is time taken, h is half life

Here given:

initial amount: 400 millicuries

final amount: 3.125 millicuries

half life: 8 days

time taken: ?

Hence solve for time taken:

\sf \rightarrow A  = A_O   \ x \ (\dfrac{1}{2} )^{\dfrac{t}{h} }

<u>insert values given</u>

\sf \rightarrow 3.125  = 400  \ x \ (\dfrac{1}{2} )^{\dfrac{t}{8} }

<u>divide both sides by 400</u>

\sf \rightarrow (\dfrac{1}{2})^{\dfrac{t}{8}}=0.0078125

<u>apply exponent rule</u>

<u />\sf \rightarrow {\dfrac{t}{8}}=\dfrac{ln(0.0078125)}{ln(1/2)}

<u>simplify</u>

\rightarrow \sf \dfrac{t}{8}=7

<u>multiply both sides by 8</u>

\rightarrow \sf t = 56

4 0
2 years ago
Jordan bikes at a speed of 8 2/3mph. How many miles will he bike in:<br> 45 minutes?
olganol [36]

Answer:

6 miles

Step-by-step explanation:

You Can make a proportion

\frac{26/3 miles}{60 minutes}=\frac{x}{45 minutes}

Now cross multiply

45*26/3 is 360

and 60*x is 60x

make an equation

60x=360

x=6

So 6 miles

6 0
3 years ago
Read 2 more answers
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