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sergij07 [2.7K]
3 years ago
7

Solution for 5-4(2.1x+9.2)<3.5(6-14x)

Mathematics
1 answer:
xenn [34]3 years ago
3 0
X<264/203
A good site to use for problems like this is Wolfram Alpha, just google it and it should show up!
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If jamie has five dollars and purchases a soda for one dollar and fifteen cents, how much change does jamie get back?* two dolla
GalinKa [24]
$5 - $1.15 = 3.85 
the correct answer is $3.85 which is 3 dollars and 85 cents.
6 0
4 years ago
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A carpenter took the following measurements: 3.4m, 10.25m, 20.2m, and 19m. How many does the sum of the measurements have ?
Simora [160]
So, I guessing the question is written wrong. The only thing that would make sense is "A carpenter took the following measurements: 3.4m, 10.25m, 20.2m, and 19m. How many SIGNIFICANT FIGURES does the sum of the measurements have?"

1. Add The Measurements
3.4m + 10.25m + 20.2m + 19.0m \\ = 52.85m
52.85 Has 4 Significant Figures, this is the more precise measurement

HOWEVER, the rules of Significant Figures states that when adding we must put our answer in the same amount of decimal places as the least one in our expression. So 3.4has 1 decimal place, 10.25 has 2, 20.2 has 2, and 19.0 has 1. So we must put our answer only to the tens place and not the hundredth as we have it. OUR SIG FIG ANSWER IS;

52.9m
This is considered less precise, for example 19 is just saying approximately 19, while 19.0 says this is exactly 19
8 0
3 years ago
Solve the system by substitution. <br><br> 3x-7y=12<br> 3x-12y=6
mel-nik [20]

Answer:

x=34/5 y=6/5

Step-by-step explanation:

so first you need to isolate one variable in one equation

so lets use 3x-12y=6

3x=12y+6

x=4y+2

then, as the name implies, we substitute it into the second equation

3(4y+2)-7y=12

then we simplify

12y+6-7y=12

5y=6

y=6/5

then we plug it in to find x

3x-7(6/5)=12

3x-42/5=12

3x=102/5

x=34/5

check work

3(34/5)-12(6/5)=6

102/5-72/5=6

30/5=6

6=6

5 0
3 years ago
The balance of a loan is $2,570 in January, and the monthly payment is $125.50. The relationship between the loan balance, y, an
Mila [183]
<span>May, June, and July <<< answers

</span> <span>y = 2,570 - 125.50x 

$1,600 < y < $2,000 </span>
5 0
4 years ago
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A ball is launched from 8 feet off the ground at an initial vertical speed of 64 feet per second. It is aimed across a field at
victus00 [196]
<span>h = –16t 2 + 64t + 8
 since both the launch height and target height are identical we can say height is 0
 solve for t

0 = -16t^2 + 64t +8

-8(2t^2-8t-1) =0
divide both sides by -8

2t^2-8t -1 = 0

t = 4.12 and -0.121

 since it can't be a negative number:

t = 4.12 seconds  ( round off as needed)

</span>
6 0
3 years ago
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