Write 358.41 ×10^5 in standard form

Mathematics

2 answers:

Marrrta [24]3 years ago

7 0

Answer:

3.5841 x 10^7

Step-by-step explanation:

ikadub [295]3 years ago

3 0

Answer:

35841000

Step-by-step explanation:

Move comma to right by five places and that includes this. 41 and after that just add zeros to fullfill that ^5

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Find the vertex form of y=-x^2-10x-21

luda_lava [24]

Answer:

$\large\boxed{y=-(x+5)^2+4}$

Step-by-step explanation:

$\text{The vertex form of an quadratic equation}\\\\f(x)=ax^2+bx+c=a(x-h)^2+k\\\\h=\dfrac{-b}{2a}\\\\k=f(k)=\dfrac{-(b^2-4ac)}{4a}\\=================================$

$\text{We have:}\\\\y=-x^2-10x-21\\\\a=-1,\ b=-10,\ c=-21\\\\h=\dfrac{-(-10)}{2(-1)}=\dfrac{10}{-2}=-5\\\\k=f(-5)=-(-5)^2-10(-5)-21=-25+50-21=4\\\\y=-(x-(-5))^2+4=-(x+5)^2+4$