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marin [14]
3 years ago
14

-27+9-3+1 using sigma notation

Mathematics
1 answer:
Vesna [10]3 years ago
4 0
Do you have question choices if not then I'll try I guess...... -27+9-3+1 36-3+1 3
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7x-5y=-15 and -14x+7y=0 Solve by elimination
geniusboy [140]

Answer: (5,10)

Step-by-step explanation:

multiply first equation with 2 and add it to second to eliminate X

7x-5y=-15  //*2

14x-10y=-30

-14x+7y=0

----------------

-3y=-30

y=-30/-3

y=10

7x=50-15

7x=35

x=35/7

x=5

4 0
3 years ago
Evaluate the expression for the given value of x.<br> 5x + 6 for x = 4
Brrunno [24]
If x=4, rewrite the equation which would be 5(4)+6

First you multiply 4 by 5 which would give you 20

Now put in the 6 in the equation

20+6

20+6=26

Therefore for the expression given the value of x would make your answer be 26

5 0
3 years ago
What is the domain of the function f(x)= 1/3x+2
frutty [35]
If it is 1/(3x+2), 3x+2≠0 =>x≠-2/3, the domain is all real number except -2/3
if it is 1/(3x)+2, 3x≠0, x≠0, the domain is all real number except 0

It is hard to tell from your equation what the demonstrator is.
3 0
3 years ago
Read 2 more answers
the five members of the traynor family each buy train tickets during the train ride each family member buys a box one for $6.50
NeX [460]

Answer:

  $43.20

Step-by-step explanation:

If each family member buys one ticket and one lunch, then for ticket price t we have the total expenditure as ...

  5(t +6.50) = 248.50

  t +6.50 = 49.70 . . . . . divide by 5

  t = 43.20 . . . . . . . . . . subtract 6.50

The price of each train ticket is $43.20.

8 0
3 years ago
Sin 75°(cot 75° + cot 60°)<br><br>help me simplify this​
leva [86]
(square root of 6)/ 3
7 0
3 years ago
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