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scZoUnD [109]
3 years ago
8

Help pls I really need it pls

Mathematics
1 answer:
Marianna [84]3 years ago
4 0
The value of x is 7 because 8/24 = 1/3 so find 1/3 of 21
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One number is 8 times a first number. A third number is 100 more than the first number. If the sum of the three is 690, find the
mezya [45]
<h3>Given</h3>

Three numbers are n, 8n, and (100+n).

Their total is 690.

<h3>Find</h3>

the three numbers

<h3>Solution</h3>

n + 8n + (n+100) = 690

10n + 100 = 690 . . . . . . . simplify

10n = 590 . . . . . . . . . . . . subtract 100

n = 59

8n = 472

n +100 = 159

The three numbers are 59, 472, and 159.

6 0
3 years ago
Help me out with this .​
Kruka [31]
Give me points first!! 9ft is the answer
8 0
3 years ago
Which of the following represent the rule y = x + 2? Input x -3 -2 -1 0 1 Output y -1 0 1 2 3 Input x 3 4 5 6 7 Output y 5 7 9 1
ziro4ka [17]
We know that 
the rule is
y=x+2
then 
for x=-3 -------------------> y=-3+2=-1
for x=-2 -------------------> y=-2+2=0
for x=-1 -------------------> y=-1+2=1
for x=0 ------------------->  y=0+2=2
for x=1 ------------------->  y=1+2=3

for x=3 -------------------> y=3+2=5
for x=4 -------------------> y=4+2=6
for x=5 -------------------> y=5+2=7
for x=6 -------------------> y=6+2=8
for x=7 -------------------> y=7+2=9

the answer is 
<span>Input x -3 -2 -1 0 1 Output y -1 0 1 2 3</span>
3 0
3 years ago
Read 2 more answers
A culture contains 2000 bacteria initially and doubles every 40 minutes. Assuming that the rate of growth is proportional to the
Natasha2012 [34]

Answer: Hello there!

We know that the culture has 2000 bacteria initially (at t = 0 min), and it doubles when t = 40min, again at t = 80 min, and so on

And the rate of grouth is proportional to the population, then we can obtain an expression of the form:

P(t) = 2000*k(t) where k(t) is the factor that defines the growth of the population:

we know that:

p(0) = 2000*k(0) = 2000

p(40) = 2000*k(40) = 2000*2 = 4000

p(80) = 2000*k(80) = 2000*2*2 = 8000

etc

then we can see that k(t) = 2^(t/40)

where k(0) = 1, k(40) = 2, k(80) = 2*2, etc

then the function that models the population of the culture is:

p(t) = 2000*2^(t/40)

where t is in minutes.

8 0
3 years ago
Which fraction is equivalent to 1?
USPshnik [31]

Answer:

wefwdwddwd

Step-by-step explanation:

3 0
3 years ago
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