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densk [106]
4 years ago
11

×^2+4x-5/×^2+7x+1

%7Bx%20%7B%7D%5E%7B2%7D%20%2B%207x%20%2B%201%20%7D%5E%20%7B%20%7D%20%20%20%7B%20%7D%20" id="TexFormula1" title=" \frac{ {x}^{2} + 4x + - 5 } {x {}^{2} + 7x + 1 }^ { } { } " alt=" \frac{ {x}^{2} + 4x + - 5 } {x {}^{2} + 7x + 1 }^ { } { } " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Serjik [45]4 years ago
6 0
(4x2 – 4x – 7)(x + 3)

(4x2 – 4x – 7)(x) + (4x2 – 4x – 7)(3)

4x2(x) – 4x(x) – 7(x) + 4x2(3) – 4x(3) – 7(3)

4x3 – 4x2 – 7x + 12x2 – 12x – 21

4x3 – 4x2 + 12x2 – 7x – 12x – 21

4x3 + 8x2 – 19x – 21

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Which represents the solution set of 5(x+5)<85?
Nostrana [21]

The answer is: x<12

Steps by steps

5(x+5)<85

Divide each term by 5 and simplify.

5(x+5)÷5<85÷5

Reduce the expression by cancelling the common factors.

x+5<85÷5

Divide 85 by 5.

x+5<17

Move all terms NOT containing "x" to the right side of the inequality.

Subtract 5 from both sides of the inequality.

x<-5+17

Add -5 and 17.

=x<12

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kenny6666 [7]

Answer:

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Step-by-step explanation:

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o-na [289]

139.49

Step-by-step explanation:

using trig ratios.

tan=o/a

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40tan74°=n

use calculator to solve

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7 0
2 years ago
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(7x-3y)(x-4y) + (5x-9Y)(y-2x)
Vika [28.1K]

Answer:

-3x2 - 8xy + 3y2

Step-by-step explanation:

7 0
3 years ago
You randomly choose a marble from a jar. The jar contains 4 red marbles, 10 blue marbles, 7 green marbles, and 6 yellow marbles.
aleksandr82 [10.1K]

Answer:

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Step-by-step explanation:

Since there are 10 blue marbles, and 27 total marbles, the probability of not choosing a blue marble is 17/27 because you subtract the amount of blue marbles (10) from the amount of total marbles (27).

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