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svp [43]
4 years ago
15

2x3+4X(3X-1+2)-2x3+(12/3)X-3-X

Mathematics
1 answer:
grin007 [14]4 years ago
7 0

Answer:

0

Step-by-step explanation:

i think thats the answer sry if its wrong mate

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Of the 1,400 students enrolled at a Middle School, 40% of students enrolled are in the 6th grade. How many students are enrolled
scZoUnD [109]

Answer:

560 students

Step-by-step explanation:

1400*.40=560 students in 6th grade

8 0
4 years ago
HELP PLEASE???!!!!!!!
Fiesta28 [93]

Answer:

<h2>A. (-4, -15)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}y=\dfrac{3}{4}x-12&(1)\\y=-4x-31&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\\dfrac{3}{4}x-12=-4x-31\qquad\text{multiply both sides by 4}\\\\3x-48=-16x-124\qquad\text{add 48 to both sides}\\\\3x=-16x-76\qquad\text{add}\ 16x\ \text{to both sides}\\\\19x=-76\qquad\text{divide both sides by 19}\\\\x=-4\\\\\text{Put it to (2):}\\\\y=-4(-4)-31\\y=16-31\\y=-15

7 0
4 years ago
A company has developed a new battery, but the average lifetime of all of the batteries it makes is unknown. In order to estimat
uranmaximum [27]

Answer:

<h2>The answer here would be <u>Statistic</u>.</h2>

Step-by-step explanation:

  • In Statistics,Statistic is a term which refers to the values or estimates obtained from the sample to evaluate the actual population parameters.
  • In this instance,observe that the average lifetime of the sample of 500 batteries tested comes out to be 225 hours., which is used to estimate the actual average lifetime of all the batteries developed by the company,which is also the population of interest in the concerned study.
  • Hence,the average lifetime of the sample of 500 batteries of 225 hours is a sample Statistic which can be tested to determine the actual average lifetime of the all the batteries produced by the company.
4 0
3 years ago
Help pls <br><br> solve the systems of equations x-y=9 and -9x- 3y = 39
beks73 [17]
The correct answers are Y= -10 X= -1
5 0
3 years ago
Can someone solve plzzz .
makvit [3.9K]

Answer:

you have to use multiplication maybe division and addition

Step-by-step explanation:

6 0
3 years ago
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