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ivanzaharov [21]
3 years ago
8

What should be the first step in adding these equations to eliminate y?

Mathematics
2 answers:
fgiga [73]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Since you want to eliminate <em>y</em>, the y value on the bottom equation has the be the opposite of the y value on the top one. So it's 4y on the top one, so the bottom one has to be -4y to eliminate y. The bottom one is -2y, so -2 times 2 =-4, so multiply the bottom one by 2 omg i miss linear combination

ElenaW [278]3 years ago
5 0

Answer:

D

Step-by-step explanation:

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Lorico [155]

Answer:

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Step-by-step explanation:

7 0
2 years ago
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6
ELEN [110]

Answer:

  swap the middle two steps to put them in order

Step-by-step explanation:

The steps in order would be ...

  1. -11 -5z = 30z +24 . . . . . eliminate parentheses
  2. -11 = 35z +24 . . . . . . . . add 5z
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3 years ago
Plz answer only if correct :)) <br> (this is trig.ratios) in
slamgirl [31]

Answer:

39

Step-by-step explanation:

Since you want to find the variable x all you have to do is simple subtraction.

The two numbers (61 and 22). Subtract those numbers and you get 39. Now it wants you to round to the jearest hundredth but there is no hundreds place so we can round to the nearest tenth. Which would be 30! Hope it helped... :)!

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Perimeter of a mirror is 260. The length is x cm. Find the height of the mirror in terms of x
Elenna [48]

\bf \textit{perimeter of a rectangle}\\\\ P=2(L+h)~~ \begin{cases} L=length\\ h=height\\[-0.5em] \hrulefill\\ P=260\\ L=x \end{cases}\implies 260=2(x+h) \\\\\\ \cfrac{260}{2}=x+h\implies 130=x+h\implies 130-x=h

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3 years ago
Can someone please explain step by step on this problem for a brainliest!
Shkiper50 [21]

Answer:

Combine the like terms. In this equation there are two like terms. They both are xy. Note: When there is no number in front of a term, you can assume that the number is 1.

5xy - 1xy

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4xy

Hope this helps! :)

7 0
2 years ago
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