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vaieri [72.5K]
3 years ago
9

Factorise this equation: 4x²-2x-5

Mathematics
1 answer:
Karolina [17]3 years ago
7 0

Answer:

PEMDAS Answer:A

Step-by-step explanation:

parentheses exponents multiplication division addition and subtraction in order

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Please help!
Mandarinka [93]

Answer:0.11111111111

Step-by-step explanation:0.1 with a repeating decimal over the 1 because when you multiply 1/3 by 1/3 thats what you get.

8 0
3 years ago
Two step equations algebra 3x+2=11
valentinak56 [21]

Answer:

3x+2=11

     -2 -2

3x=9

3/3

9/3

x=3

Final answer : x = 3

Hope it helped! : )

8 0
3 years ago
Read 2 more answers
Add: (7-5i) (-10+2i)
Mice21 [21]

Answer:

-10i^(2) + 64i - 70

5 0
3 years ago
Select the correct equation that represents an am signal.
ch4aika [34]

The first choice,

... a. s(t) = ac[1 + μam cos (2πfmt)] cos (2πfct)

has the carrier frequency cos(2πfct) amplitude modulated by the message signal.

The other expressions represent frequency and phase modulation of various kinds.

8 0
3 years ago
Let x be the amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train. Suppose that the d
babymother [125]

Answer:

a) P (x is less than 11 minutes) =  0.55

P (x is more than 14 minutes) = 0.3

b) P (x is between 8 and 13 minutes) = 0.25

c)  P(x < c) =0.8 is 0.05 x c = 0.8

Step-by-step explanation:

a) P (x is less than 11 minutes) = 11 x 0.05

                                                 = 0.55

P (x is more than 14 minutes) = 0.05 x (20 - 14)

                                                = 0.05 x 6

                                                = 0.3

b) P (x is between 8 and 13 minutes) = 0.05 x (13 -8)

                                                            = 0.05 x 5

                                                             = 0.25

c)  P(x < c) =0.8

The area between 0 and c is 0.8

Hence,

0.05 x c = 0.8

3 0
3 years ago
Read 2 more answers
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