Ask question

Ask question

All categories

3 years ago

15

To solve this system of equations by elimination, what operation could be used to eliminate the x- variable and find the value o

f y?

1 answer:

Drupady [299]3 years ago

5 0

You would need to multiply one or both equations by a number that would give the the same number but opposite signs so that they cancel out.

You might be interested in

8 × ( 10 - 7 ) distribute property<br><br>

icang [17]

Answer:

8 x (10-7)

80-56

24

Let me know if this helps!

6 0

3 years ago

Find the real solution(s) of the equation. Round your answer to two decimal places when appropriate. 5x^6=30

Elina [12.6K]

Answer:

The real solutions are

$x=\sqrt[6]{6}\approx 1.35\\\\\:x=-\sqrt[6]{6}\approx -1.35$

Step-by-step explanation:

The solution, or root, of an equation is any value or set of values that can be substituted into the equation to make it a true statement.

To find the real solutions of the equation $5x^6=30$ :

$\mathrm{Divide\:both\:sides\:by\:}5\\\\\frac{5x^6}{5}=\frac{30}{5}\\\\\mathrm{Simplify}\\\\x^6=6\\\\\mathrm{For\:}x^n=f\left(a\right)\mathrm{,\:n\:is\:even,\:the\:solutions\:are\:}x=\sqrt[n]{f\left(a\right)},\:-\sqrt[n]{f\left(a\right)}\\\\x=\sqrt[6]{6}\approx 1.35\\\\\:x=-\sqrt[6]{6}\approx -1.35$

7 0

3 years ago

Please help me with #5

nlexa [21]

The answer is C, 25% increase. To find the increase, subtract starting value (780) from the final value (975). It equals out to be 195. Divide 195 by the starting value which turns out to be 0.25. Then, multiply 0.25 by 100 which equals out to be 25.

5 0

3 years ago

Work out the equation of the line which has a gradient of -2 and passes through the point (1,7)

Sophie [7]

Answer:

y = -2x+9

Step-by-step explanation:

by using point slope equation

5 0

3 years ago

Set both given equations equal to zero, then combine them into standard form equation. Simplify if possible

sergij07 [2.7K]

Answer:

4x-6=4+4y+8=2

Step-by-step explanation:

3 0

3 years ago