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postnew [5]
3 years ago
10

If x=1 y= -1, a= -2, b=3, then value of ax+by is_____

Mathematics
2 answers:
Thepotemich [5.8K]3 years ago
4 0

Answer:

- 5

Step-by-step explanation:

Substitute the given values into the expression

ax + by

= (- 2 × 1) + (3 × - 1)

= - 2 + (- 3)

= - 2 - 3

= - 5

Maksim231197 [3]3 years ago
3 0

Answer:

-5

Step-by-step explanation:

ax= -2(1)= -2

by= 3(-1)= -3

ax+by=-2+-3=-5

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nexus9112 [7]

In (4, 1) 4 represents x, and 1 represents y

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1 = 3(4)+1

1 = 12 + 1

1 ≠ 13   ← sides are not equal so (4, 1) is not a solution to y=3x+1

6 0
3 years ago
If f(x) = x + 8 and g(x) = x3, what is (gºf)(-5)?
11111nata11111 [884]

Answer:

Step-by-step explanation:

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3 years ago
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6 0
3 years ago
16 and 17 please I don’t know if it’s the distance formula
Trava [24]

Answer:

#16 = (0, -10)

#17 = (-18, -3)

Step-by-step explanation:

U wouldn't use the distance formula, you would need to use the Midpoint Formula, which is, M = (x1 + x2 / 2, y1 + y2 / 2). For #16, you plug in (4, -5) for M and 8 for x1 and 0 for y1, so the equation should look like this : (4, -5) = (8 + x2 / 2, 0 + y2 / 2). Then separate the equation to make it easier: 4 = 8 + x2 / 2 and the second equation : -5 = 0 + y2 / 2. So let's do the 1st equation, the first step would be to multiply the 2 to both sides. So the equation should look like this, 8 = 8 + x. Then subtract the 8 from both sides and you get 0 as your x. Now moving on to the 2nd equation, you multiply the 2 to both sides, and you get, -10 = 0 + y, as your equation, but since 0 won't affect it, -10 should be your y. Then just use these steps to solve #17, and your answer should be (-18, -3).

6 0
3 years ago
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