3 years ago

I dont get this one someone help me

Mathematics

1 answer:

worty [1.4K]3 years ago

5 0

You have to set up a ratio and solve

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Quadrilateral A'B'C'D is the image of quadrilateral ABCD under a translation.

Temka [501]

Answer: 1 unit to the left, and 3 units down

Step-by-step explanation:

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2 years ago

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the interior angle of a regular hexagon is 120° work out the sum of the six reflex angles at the vertices of a regular hexagon

olga2289 [7]

Answer:

I'm not 100% sure but isn't a reflex angle the difference between the angle and 360°?

Then 360° - 120° = 240°

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Step-by-step explanation:

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3 years ago

Which value of b would make x²+bx-30 factorable?<br> A. -31<br> B. -17<br> C. 11<br> D. 13

dimulka [17.4K]

Answer:

D. 13

Step-by-step explanation:

well since it's a quadratic equation, it can be written in the form of ax²+bx+c=0. So we have a=1, b=b and c= -30. Also the roots are given by the equation-

x= -b± $\sqrt{b^{2}-4ac}$ /2a. So all I did was put the number from the choices which would satisfy the sqrt part and that turned out to be 13 since $\sqrt{13^{2}-4*1*(-30)$ = $\sqrt{289}$ = 17. So b=13.