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salantis [7]
3 years ago
11

Which pair ordered x’y is a solution to given system of linear equations 3x+y=1 5x+y=3

Mathematics
1 answer:
ohaa [14]3 years ago
7 0

Answer:

  (1, -2)

Step-by-step explanation:

Subtracting the first equation from the second gives ...

  (5x +y) -(3x +y) = (3) -(1)

  2x = 2 . . . . . collect terms

  x = 1 . . . . . . . divide by 2

Then substituting into the first equation, we have ...

  3·1 +y = 1

  y = -2 . . . . . . subtract 3

The solution is (x, y) = (1, -2).

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9. An item is priced al $13.62. If the sales tax is 6%, what does the
zheka24 [161]

Answer:

A (14.44)

Step-by-step explanation:

13.62 multiplied by 6%= 0.8172

Add 13.62 and 0.8172= 14.4372

Round to the hundredths=14.44

5 0
3 years ago
Find f. (antiderivative) . f '(t) = 4 cos (t) + sec^2(t), −π/2 < t < π/2, f(π/3) = 3
ArbitrLikvidat [17]
The antiderivative of the function f '(t) = 4 cos (t) + sec^2(t) is determined by applying integral calculus. The antiderivative of 4 cos (t) is -4 sin(t) while the antiderivative of <span>sec^2(t) is tan (t). The total term is -4 sin(t) + tan (t). We try to replace pi/3 and the answer is 3.</span>
6 0
4 years ago
Find the rectangular coordinates of (7, 150°)
Y_Kistochka [10]

Answer:

The coordinates are (-7sqrt(3)/2, 7/2).

Step-by-step explanation:

The rectangular coordinates from polar coordinates is found by:

x = r*cos(theta)

y = r*sin(theta)

Substituting the given values, we get:

x = 7*cos(150 deg) = 7*(-sqrt(3)/2) = -7sqrt(3)/2

y = 7*sin(150 deg) = 7*(1/2) = 7/2

The coordinates are (-7sqrt(3)/2, 7/2).

I hope this helps! :)

4 0
3 years ago
Find c and round thank you !
asambeis [7]

Answer:

hi

Step-by-step explanation:

hi

4 0
3 years ago
Which terms could have a greatest common factor of 5m2n2? Check all that apply.
leva [86]

Answer : 5m^4n^3  and 15m^2n^2

Greatest common factor of  5m^2n^2

If we are able to factor out 5m^2n^2 from each option then that would be our answer.

Lets check with each options

(a)m^5n^5, we cannot take out 5.

(b)5m^4n^3, We can take out common factor and it can be written as 5m^4n^3=5m^2n^2(m^2n)

(c) 10m^4n, we cannot take out n^2 because we have only 'n'

(d) 15m^2n^2, We can take out common factor and it can be written as 15m^2n^2=5m^2n^2(3)

(e) 24m^3n^4, we  cannot take out 5 because we have 24

So answer is (b)  and (d)

4 0
4 years ago
Read 2 more answers
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