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2 years ago

Complete the square to re-write the quadratic function in vertex form: y=x2-x+3

Mathematics

1 answer:

Anna [14]2 years ago

5 0

Answer:

Step-by-step explanation:

hello :

note : the vertex form is :

ax²+bx+c = a(x+(b)/(2a))²- delta/4a² and delta = b²- 4ac

in this exercice you have : a =1 b = -1 and c= 3

continu ..........

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The HCF and LCM of two numbers x and 126 are 24 and 840 respectively. Find the value of x.

Zigmanuir [339]

Answer:

x=160

Step-by-step explanation:

x×126=24×840

$x=\frac{24 \times840}{126} =160$

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2 years ago

Find the size of the marked angles

morpeh [17]

Answer:

b = 55°

c = 35°

Step-by-step explanation:

b° = 180° - (85°+40°) = 180° - 125° = 55°

c° = 180° - (b°+90°) = 180° - (55°+90°) = 180° - 145° = 35°

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2 years ago

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GenaCL600 [577]

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2 years ago

How long in days is a mega second? Hi, I'm helping my little brother with a maths assignment at the moment and I couldn't quite

Marat540 [252]

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2 years ago

Help anyone can help me do this question 3,I will mark brainlest.

malfutka [58]

Answer:

see explanation

Step-by-step explanation:

Calculate the slopes between pairs of the 3 points using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 9, 3) and (x₂, y₂ ) = (- 3, 9)

m = $\frac{9-3}{-3-(-9)}$ = $\frac{6}{-3+9}$ = $\frac{6}{6}$ = 1

Repeat with (x₁, y₁ ) = (5, 1) and (x₂, y₂ ) = (- 3, 9)

m = $\frac{9-1}{-3-5}$ = $\frac{8}{-8}$ = - 1

If lines are perpendicular then the product of their slopes = - 1 , then

1 × - 1 = -1

Thus there is a right angle between the 2 lines

Then triangle is right- angled

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2 years ago