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Solnce55 [7]
3 years ago
9

4x – 9y = 7 –2x 3y = 4 what number would you multiply the second equation by in order to eliminate the x-terms when adding to th

e first equation? what number would you multiply the second equation by in order to eliminate the y-terms when adding to the first equation?
Mathematics
2 answers:
steposvetlana [31]3 years ago
8 0
Multiply equation II by 2 and then add up the equations.
Alchen [17]3 years ago
7 0

Answer:

What number would you multiply the second equation by in order to eliminate the x-terms when adding to the first equation? answer 2

What number would you multiply the second equation by in order to eliminate the y-terms when adding to the first equation? answer 3

Step-by-step explanation:

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Solve the following system of equations: 2x - y = 7
wlad13 [49]

Answer:

Step-by-step explanation: Not too sure how to explain it this is how you simplify it pretty sure

2x-y=7

+2x    +2x add to both sides to get y alone because it has no friends

___________

-y=7+2x get rid of the negative on the y value

__________

y= -2x -7

5 0
4 years ago
Convert y + 1 = 3/4 (x - 16) to standard form.
Archy [21]
3x/4-y=13 or choice B
7 0
4 years ago
Choose the symbol that correctly compares these mixed numbers.
Shkiper50 [21]

Answer : =

Step - by - step explanation :

6 3/6 -- simplest form --> 6 1/2

6 6/12 -- simplest form --> 6 1/2

7 0
2 years ago
Read 2 more answers
Suppose that theta is an angle in standard position whose terminal side Intersects the unit circle at (-11/61, -60/61)
Blizzard [7]

Answer:

The exact values of the tangent, secant and cosine of angle theta are, respectively:

\cos \theta = -\frac{11}{61}

\tan \theta = \frac{-\frac{60}{61} }{-\frac{11}{61} } = \frac{60}{11}

\sec \theta = \frac{1}{-\frac{11}{61} } = -\frac{61}{11}

Step-by-step explanation:

The components of the unit vector are x = -\frac{11}{61} and y = -\frac{60}{61}. Since r = 1, then x = \cos \theta and y = \sin \theta. By Trigonometry, tangent and secant can be calculated by the following expressions:

\tan \theta = \frac{\sin \theta}{\cos \theta} = \frac{y}{x}

\sec \theta = \frac{1}{\cos \theta} = \frac{1}{x}

Now, the exact values of the tangent, secant and cosine of angle theta are, respectively:

\cos \theta = -\frac{11}{61}

\tan \theta = \frac{-\frac{60}{61} }{-\frac{11}{61} } = \frac{60}{11}

\sec \theta = \frac{1}{-\frac{11}{61} } = -\frac{61}{11}

3 0
3 years ago
To make a specific hair dye a hair stylist uses a ratio of 1 1/8 oz of red tone, 3/4 oz
sveticcg [70]

Answer:

Step-by-step explanation:

To make 20 ounces of dye, we need 3 oz red tone, 6 oz of gray tone and 5 oz of brown tone.

im pretty sure this is right :)

4 0
3 years ago
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