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3 years ago

Estimate 53.83-36.464 by first rounding each number to the nearest whole number.

Mathematics

2 answers:

Free_Kalibri [48]3 years ago

7 0

Answer:

Step-by-step explanation:

53.83 rounds to 54

36.464 rounds to 36

54-46=18

crimeas [40]3 years ago

7 0

The answer is 18 because 53.83 can be rounded to 54 & 36.464 can be rounded to 36 because 4 is less than 5 so it will round down. If the number in the tenths place is five or greater than it will round up.

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Hoochie [10]

Answer: $1\dfrac{3}{4}\text{ feet}$

Step-by-step explanation:

Given: Length of sandwich = $10\dfrac12\text{ feet}=\dfrac{21}{2}\text{ feet}$

Total people = 14

If everyone gets a same sized piece , then length of each piece should be

$\dfrac{\text{ Length of sandwich}}{\text{Total people}}$

$=\dfrac{\dfrac{21}{2}}{14}\text{ feet}\\\\=\dfrac{21}{2\times14}\text{ feet}\\\\=\dfrac{7}{2\times2}\text{ feet}\\\\=\dfrac{7}{4}\text{ feet}\\\\=1\dfrac{3}{4}\text{ feet}$

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3 years ago

The area of an 20 -cm-wide rectangle is 440 cm. What is its length?

Nataly [62]

Answer:

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Step-by-step explanation:

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3 years ago

The perimeter of a triangle is 6x. One side is x+3 and another side is 2x+4. What is the length of the 3rd side?

maxonik [38]

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3 years ago

A parabola has a focus of F(2, -0.5) and a directrix of y=-1.5 P(x,y) represents any point on the parabola, while D(x, -1.5) rep

prohojiy [21]

The sketch of the parabola is attached below

We have the focus $(a,b) = (2, -0.5)$
The point $P(x,y)$
The directrix, c at $y=-1.5$

The steps to find the equation of the parabola are as follows

Step 1
Find the distance between the focus and the point P using Pythagoras. We have two coordinates; $(2, -0.5)$ and $(x,y)$ .
We need the vertical and horizontal distances to find the hypotenuse (the diagram is shown in the second diagram).
The distance between the focus and point P is given by
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$

Step 2
Find the distance between the point P to the directrix $c$ . It is a vertical distance between y and c, expressed as $y-c$

Step 3
The equation of parabola is then given as
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$ = $y-c$
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$y= \frac{ x^{2} }{2} -2x+1$

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4 years ago

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nasty-shy [4]

The answer would be D.
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Hope this helps!

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3 years ago