Plz helpp mee!!! its math and i really need hellpp

How many significant digits are in 3.670 × 10^35
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Round 4279852.243 to 3 significant digits

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Round 0.0573000 to 1 significant digit

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Y = 45.2 + 16.730, Find Y

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Y = 23 – 26.2, Find Y

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Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick