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4 years ago

1

Mathematics

1 answer:

ANEK [815]4 years ago

6 0

9514 1404 393

Answer:

x > -5

Step-by-step explanation:

(2/5)(x -1) < (3/5)(x +1) . . . . . given

2(x -1) < 3(x +1) . . . . . . . . . . .multiply by 5

2x -2 < 3x +3 . . . . . . . . . . . eliminate parentheses

-5 < x . . . . . . . . . . . . . . . . . . add -2x-3 to both sides

This matches the second answer choice: x > -5.

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If sinø=3/5 then tanø=?

nikdorinn [45]

Answer:

p/h=3/5.

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cos theta = 4/5

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Step-by-step explanation:

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3 years ago

1. If 4r – 10 = 18, what is the value of 2r + 9?

fgiga [73]

Answer:

Step-by-step explanation:

4r-10=18

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3 years ago

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Thirty students bought pennants for the football game. Plain pennants cost $4 each and fancy ones cost $8 each. If the total bil

sammy [17]

Answer:

number o students bought pennants = 18

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Step-by-step explanation:

Let x be the number o students bought pennants

and y be the number of student bought fancy ones

total 30 students

$x+y= 30$

$y=30-x$

Plain pennants cost $4 each and fancy ones cost $8 each.

$4x+8y=168$

Substitute 30-x for y in second equation

$4x+8(30-x)=168$

$4x+240-8x=168$

$240-4x=168$

Subtract 240 from both sides

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divide both sides by -4

x=18

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4 years ago

In order for the data in the table to represent a linear function with a rate of change +5

romanna [79]

Answer:

Rate of change is slope. (y = mx + b)

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Step-by-step explanation:

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3 years ago

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soldi70 [24.7K]

$\frac{27}{42}=\frac{27:3}{42:3}=\frac{9}{14}\\\\Answer:D$

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3 years ago

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