2 years ago

Eight paper clips cost 12. cents.How much does 6 paper clips cost?

Mathematics

1 answer:

o-na [289]2 years ago

6 0

You would do (12 ÷ 8)6 or 12 ÷8 ×6

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Write the complex number 1 +i/1 -i into polar form

IRINA_888 [86]

Answer:

cos(pi/2) + i sin (pi/2)

Step-by-step explanation:

(1+i)/ (1-i)

Multiply top and bottom by (1+i)

(1+i) (1+i)/ (1-i)(1+i)

Foil the top (1+i)(1+i) = 1 +2i +i^2 = 1 +2i -1 = 2i

Foil the bottom ( 1+i)(1-i) = 1 - i^2 = 1 - (-1) =2

2i/2 = i

the magnitude is (0^2+1^2) = 1

The angle is tan^-1( 1/0) = pi/2

cos(pi/2) + i sin (pi/2)

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2 years ago

"Time headway" in traffic flow is the elapsed time between the time that one car finishes passing a fixed point and the instant

marysya [2.9K]

Answer:

Detailed explanation of the answer is given in the attached files. Please have a look.

Step-by-step explanation:

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3 years ago

What is the factored form of the expression 144x2 - 49?

PIT_PIT [208]

Answer:

Step-by-step explanation:

Difference of squares: (a^2 - b^2) = (a - b)(a + b)

(144x^2 - 49) = (12x - 7) (12x + 7)

6 0

2 years ago

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hich function has a range of {y|y ≤ 5}? f(x) = (x – 4)2 + 5 f(x) = –(x – 4)2 + 5 f(x) = (x – 5)2 + 4 f(x) = –(x – 5)2 + 4

Brums [2.3K]

Answer:

$f(x)=-(x-4)^2+5$

Step-by-step explanation:

The function $f(x)=-(x-4)^2+5$ has the vertex at $(4,5)$ .

Since $a=-1\:$ , the graph of the function is a maximum graph.

The highest y-value is the y-coordinate of the vertex which is 5.

Therefore the range is { $y|y\le 5$ }

Therefore the correct answer is B.

6 0

3 years ago

I still cant figure it out . ughh −2∣5w−7∣+9=−7

Fofino [41]

W=3,-1/5 is the answer

3 0

3 years ago

Read 2 more answers