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dalvyx [7]
2 years ago
15

If x + y = 5 and at the same time 2x - y = 7. find the value of x

Mathematics
1 answer:
Fed [463]2 years ago
5 0

Answer:

x = 2y − 2

Step-by-step explanation:

x + y + 5 = 2x - y + 7

−x + y + 5 = −y + 7

−x + 5 = −2y +7

−x = −2y + 2

x = 2y − 2

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The Chang family is on their way home from a cross-country road trip. During the trip, the function D (t) = 3260 - 55t can be us
Lilit [14]

Answer:

See below.

Step-by-step explanation:

D(t) = 3260 - 55t

The function that shows their distance from home as a function of time shows that they started 3260 miles from home and are driving at 55 miles per hour.

part a:

D(12) = 3260  55(12)

D(12) = 3260 - 660

D(12) = 2600

Interpretation: After 12 hours of driving home, they are 2600 miles from home.

part b:

D(t) = 2490

3260 - 55t = 2490

-55t = -770

t = 14

Interpretation: When they are 2490 miles from home, they have driven for 14 hours.

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2 years ago
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Hello.


C) x=4π/3


The variable x in the cotangent argument has a unit coefficient, so the period is π, just as it is in the parent function cot(x).


Can you graph y = cot(x)? By subtracting the constant π/6 from the argument, that graph is translated to the right by π/6. Just as with cot(x), it is decreasing everywhere.


Have a nice day



5 0
3 years ago
The log of x cubed times y squared simplified
tresset_1 [31]

Answer:

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Step-by-step explanation:

Step 1:-

using logarithmic formula log(ab)=log a+log b

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now simplify

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<u>Answer:</u>-

log(x^{3}y^{2})= [tex]3 log x+2 log y

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