This question is for !
which statement describes the solar feature labeled b?
an envelope of plasma surrounding the sun
a stream of glowing gas that shoots out from the sun in an arch
a brief eruption of intense high-energy radiation from the sun's surface
a dark spot appearing from time to time on the sun's surface

➷ The correct answer is 'A brief eruption of intense high-energy radiation from the sun's surface.'

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↬ Hannah ♡

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.