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Svetlanka [38]
2 years ago
14

(-13xy+2y)+(2x-5xy-15y)

Mathematics
2 answers:
Thepotemich [5.8K]2 years ago
8 0

Answer:

2x -18xy -13y

Step-by-step explanation:

(-13xy + 2y) + (2x - 5xy -15y)

-13xy + 2y + 2x -5xy - 15y

Collecting like term..

2x -13xy - 5xy - 15y + 2y

= 2x -18xy -13y

Arturiano [62]2 years ago
3 0

Answer:-18xy+2x-13y

Step-by-step explanation: combine like terms

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What 2 numbers added give you 32
bixtya [17]
30+2=32, these two numbers 30+2 give you 32. Hope this helps:-)
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3 years ago
Pleas help me find the answer and show the work to this question
lions [1.4K]

Answer:

Leg\ 1 = 8

Leg\ 2 = 15

Step-by-step explanation:

Given: See Attachment

Required

Determine the length of the legs

To do this, we apply Pythagoras theorem.

Hyp^2 = Adj^2 + Opp^2

In this case:

17^2 = x^2 + (2x- 1)^2

Open Bracket

17^2 = x^2 + 4x^2- 2x-2x + 1

17^2 = 5x^2 - 4x + 1

289= 5x^2 - 4x + 1

Collect Like Terms

5x^2 - 4x + 1 - 289 = 0

5x^2 - 4x - 288 = 0

Solving using quadratic formula:

x = \frac{-b\±\sqrt{b^2 - 4ac}}{2a}

So:

x = 8 or x = -7.2

Since, x can't be negative, then:

x = 8

One of the leg is:

Leg\ 1 = x

Leg\ 1 = 8

Leg\ 2 = 2x - 1

Leg\ 2 = 2*8 - 1

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6 0
3 years ago
Which of these expressions is equivalent to – 4(5 – 2x)?
Alekssandra [29.7K]

Answer:

-20+8x

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
¡¡¡40 POINTS!!!HELP ASAP!!
Nataly_w [17]
Hi there!

To start, we can use the two points to find the slope using the formula y2-y1/x2-x1. Just sub in the points and solve!

-0.5-0.5/3-(-3)
-1/6
Sub that into the formula y-mx+b for m, and use one of the points for x and y - solve for b and you get your equation. 

y=mx+b
y=-1/6x+b
0.5=-1/6*-3+b
0.5=-0.5+b
0.5+0.5=b
b=1

Therefore your equation is y=-1/6x+1

Hope this helps!



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3 years ago
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ElenaW [278]
Potato Flakes: 2 cups
Boiling Water: 1 1/2 cups
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