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AlekseyPX
3 years ago
14

PLEASE HELPPPP !!!!!!!!!

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
3 0

Answer:

negative 7

Step-by-step explanation

malfutka [58]3 years ago
3 0

Answer:

x=-7

Step-by-step explanation:

3/4(x+21)=10 1/2

3/4x+15 3/4 = 10 1/2

(I put them in improper form)

3/4x+63/4 = 42/4

3/4x=-5.25

divide -5.25 by 3/4= x=-7

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KonstantinChe [14]
It does not represent a polynomial
7 0
3 years ago
The number of hours you study for an exam affects your grade. What is a reasonable value of the range?
Gwar [14]

Answer:

C

Step-by-step explanation:

The range is the grade. Domain is the amount of hours that you study for.

8 0
3 years ago
Read 2 more answers
What is the line through the points (2,3) and (19,17)
hammer [34]

Answer:

y-3=14/17(x-2)

Step-by-step explanation:

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

m=(17-3)/(19-2)

m=14/17

y-y1=m(x-x1)

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3 0
3 years ago
In 2007, the population of Ecuador was estimated at
swat32

Answer:

In 2012 , the population will be 15 million

Step-by-step explanation:

We start by setting up an exponential equation that defines the increase

P(t) = I(1 + r)^t

P(t) represents the present population = 15 million

I is the population in 2007 which is 13.8 million

r is 1.6% = 0.016

t is what we want to calculate

15 million = 13.8 million (1 + 0.016)^t

15/13.8 = (1.016)^t

1.09 = (1.016)^t

ln 1.09 = t ln 1.016

t = ln 1.09/ln 1.016

t = 5.429 which is approximately 5

So in 2007 + 5 = 2012, the population will be 15 million

8 0
3 years ago
The numbers of beads on 500 handcrafted bead
pashok25 [27]
 <span>The numbers of beads on 500 handcrafted bead necklaces follow a normal distribution whose mean is 24 beads and standard deviation is 4 beads. 
</span>so....
<span>About 24 necklaces have more than 28 beads. </span>
<span>About 48 necklaces have more than 28 beads. </span>
<span>About 80 necklaces have more than 28 beads. </span>
About 96 necklaces have more than 28 beads<span>

</span> <span>About 80 necklaces have more than 28 beads. 
</span><span>
Z score is 28-24/4=1 
(1-.8413)=0.1587 

500*0.1587=79.35~80

i did this like 2 or 3 years ago .</span>
7 0
3 years ago
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