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yan [13]
3 years ago
15

4x²-17x-42 by factor

Mathematics
1 answer:
kkurt [141]3 years ago
5 0
4x²-17x-42
=4(x²-17/4x)-42
=4[x²-17/4  x+(-17/8)²-(-17/8)²]-42
=4(x-17/8)²-289/64-42
=4(x-17/8)²-(289+2688)/64
=4(x-17/8)²-2974/64
=[(2x-34/8)²-(√2974/8)²]
=(2x-34/8  +(√2974/8))(2x-34/8-(√2974/8)
=[2x+(√2974-34)/8][2x-(√2974+34)/8]

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Answer:

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Step-by-step explanation:

Newton's second law:

F = ma

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4 0
3 years ago
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Marat540 [252]

Answer:

Step-by-step explanation:

We will squared each, we will find

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3 years ago
Which graph shows a system of equations with no solutions?
podryga [215]

Graph of Parallel lines shows a system of equations with no solutions

Step-by-step explanation:

Consider a set of equations

7x - 2y = 16\\21x + 6y =24

If we solve this both equations using any one of the solving method, (Substitution method) then we will get

7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}

substituting the following x in 2nd equation (21x + 6y = 24) We get

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Put y= -2 in x equation

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4 0
3 years ago
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Answer and Step-by-step explanation:

Since we know that lines <em>l</em> and <em>m</em> are parallel (we are just proving that they are parallel), we can see that the two angles given are corresponding angles, so they are congruent to each other.

123 = 2x + 7

<u>Subtract 7 from both sides.</u>

116 = 2x

<u>Now, divide both sides by 2.</u>

58 = x

<u>So, the value of x is 58.</u>

<u></u>

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<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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2 years ago
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GuDViN [60]

Answer:

B

Step-by-step explanation:

tan45° = 10/x

=> 1 = 10/x

=> x = 10

=> y^2 = 10^2 + 10^2 = 200

=> y = 100*sqrt(2)

=> b

5 0
2 years ago
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