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Mrrafil [7]
3 years ago
9

Round off 3.55 to one significant figure

Mathematics
1 answer:
aivan3 [116]3 years ago
8 0
Well  I Think it is 4 because it says round off 
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Hello! I have a question =)<br> What is:<br> (7/4x) - 5 + 2y - 3.5 + (-1/4x) + 5?<br> Thank you!
Pavel [41]

Answer:

3/2x+2y-7/2

Step-by-step explanation:

6 0
2 years ago
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Ms hills travels 2400 miles at a rate of 400 miles per day to visit her grandchild . Write and solve an equation to find the num
Naya [18.7K]

It Would Take her 6 days

2400÷400=6

6 0
3 years ago
If the mass of a material is 44 grams and the volume of the material is 6 cm^3, what would the density of the material be?
Svetlanka [38]

Density is mass per unit volume.

For the given material that has a mass of 44 grams occupying a volume of 6 cm^3, we divide the mass by the volume, i.e.

density of material = 44 grams / 6 cm^3 = 44/6 grams/cm^3 = 7.3 g/cm^3 (to two significant figures)

4 0
3 years ago
How do i find the height?
Scorpion4ik [409]
Perimeter divided by base??
5 0
3 years ago
Find the extreme values of f(x y)=xy subject to the constraint x^2 + y^2 -4 = 0
KATRIN_1 [288]
Via Lagrange multipliers:

L(x,y,\lambda)=xy+\lambda(x^2+y^2-4)

L_x=y+2\lambda x=0
L_y=x+2\lambda y=0
L_\lambda=x^2+y^2-4=0

yL_x=y^2+2\lambda xy=0
xL_y=x^2+2\lambda xy=0
\implies yL_x-xL_y=y^2-x^2=0\implies y^2=x^2
\implies x^2+y^2=4=2x^2\implies x^2=2\implies x=\pm\sqrt2\implies y=\pm\sqrt2

So we have four critical points to consider, (\sqrt2,\sqrt2),(-\sqrt2,\sqrt2),(\sqrt2,-\sqrt2),(-\sqrt2,-\sqrt2). If both coordinates are positive or both are negative, we get a maximum value of (\pm\sqrt2)^2=2; otherwise, we get a minimum of (-\sqrt2)(\sqrt2)=-2.
4 0
3 years ago
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