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3 years ago

What number complete the square x^2 +\- bx

1 answer:

7 0

Take 1/2 of b and squaer it so (b/2)^2 would complete the square (sign doesn't matter becaus when squareing, sign goes positive)

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2y + 3 divided by 21y2 + 6y3 − 22

Lapatulllka [165]

Answer:

$21y^2+6y^3-11y+3$

Step-by-step explanation:

Divide the numbers 22÷2=11

<em>Hope this helps!!</em>

4 0

2 years ago

Read 2 more answers

What is the error in the equation?

omeli [17]

-54+4=54+4 .......-50+58they are not equal

5 0

3 years ago

Read 2 more answers

NEED HELP!!!plssssssssssssss

alexgriva [62]

Answer: 1st,2nd, and 4th one

Step-by-step explanation:

5 0

2 years ago

1. From a circular sheet of radius 18 cm, two circles of radii 4.5 cm and a rectangle of length 4 cm and breadth 1 cm are remove

telo118 [61]

Area of a circle = PI x r^2

Area of sheet = 22/7 x 18^2 = 1,018.29 square cm.

Area of small circle = 22/7 x 4.5^2 = 63.64 square cm.

There are 2 small circles so total area of the circles are 63.64 x 2 = 127.28 square cm.

Area of rectangle = l x w = 4 x 1 = 4 square cm.

Total area of cutouts = 127.28 + 4 = 131.28 square cm.

Area of sheet left, subtract area of cutouts fro area of sheet:

1018.29 - 131.28 = 887.01 square cm.

Round everything as needed.

4 0

3 years ago

A model for the surface area of a human body is given by S = 0.1091w0.425h0.725, where w is the weight (in pounds), h is the hei

saveliy_v [14]

Answer:

$2.3$ %

Step-by-step explanation:

Surface area of a human body is given by -

$S = 0.1901* w^{0.425}* h^{0.725}\\$

Taking integral on both sides, we get -

$In S = 0.425 ln w + 0.725 ln h + ln 0.1091\\\frac{dS}{S} = 0.425\frac{dw}{w} + 0.725\frac{dh}{h}\\$

Since, the at most error in the surface area of a human body is $2$ %

Substituting this in above equation, we get -

$\frac{dS}{S} \leq [0.425*0.02 + 0.725*0.02]\\\frac{dS}{S} \leq0.023\\$

Thus, the maximum error is surface area is equal to

$0.023 * 100\\= 2.3$ %

6 0

3 years ago