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3 years ago

X-y = 10 x^2-y^2 = 60 x^2+2xy+y^2=?

1 answer:

8 0

$\displaystyle\\x-y=\boxed{10}\\\\----------\\\\x^2-y^2 = 60\\\\(x-y)(x+y)=60\\\\10(x+y)=60\\\\x+y=\frac{60}{10}=\boxed{6}\\\\----------\\\\x^2+2xy+y^2=(x+y)^2=6^2=\boxed{\bf36}$

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PLEASE HELP ASAP THANK YOU

nevsk [136]

Answer:

first move eight to the left on the first number line

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on the third move back two

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7 0

3 years ago

Find the volume of the composite figure at the right.

nataly862011 [7]

Answer:

715.6 in^3

Step-by-step explanation:

Step 1:

multi. 10x6x8

=480

Step 2:

v=1/2 xPIE (5)^2 x6

= 235.6

Step 3:

480 + 235.6

= 715.6

6 0

3 years ago

The following proportions were written on the board by Ms. Warren.

Elenna [48]

Answer:

see explanation

Step-by-step explanation:

given

$\frac{3.6}{5.7}$ = $\frac{f}{9.5}$ ( cross- multiply )

5.7f = 34.2 ( divide both sides by 5.7 )

f = 6

-----------------------------------------------------

given

$\frac{3.6}{5.7}$ = $\frac{16.2}{g}$ ( cross- multiply )

3.6g = 92.34 ( divide both sides by 3.6 )

g = 25.65

6 0

3 years ago

The Ferris wheel shown makes 16 revolutions per ride. How far would someone travel during one ride? Round your final answer to t

sertanlavr [38]

Complete question :

The diameter of the ferris Given is 63 feets

Answer:

3165 feets

Step-by-step explanation:

Given that :

Diameter of ferris = 63 feets

Recall :

Circumference of a circle = 2 * pi * Radius

Circumference = pi * d

Hence,

Circumference of wheel = 3.14 * 63 = 197.82 feets

Distance traveled during one ride :

Circumference of wheel * number of revolutions

197.82 * 16 = 3165.12

= 3165 feets (nearest whole number)

4 0

2 years ago

The cylinder is 20cm high and radius of its circular face is 3cm What is the total perimeter and area of the whole net?

trasher [3.6K]

Answer: $52\ cm,\ 176.55\ cm^2$

Step-by-step explanation:

Given

The cylinder is 20 cm high

The radius of the cylinder is $r=3\ cm$

The total area of the figure is the sum of the rectangle and two circles

$\Rightarrow \text{Perimeter P=}2[h+2r]\\\Rightarrow P=2[20+6]\\\Rightarrow P=52\ cm$

The total area of the figure is

$\Rightarrow \text{Area A=}h\times 2r+2\pi r^2\\\Rightarrow A=20\times 6+2\times \pi \times 3^2\\\Rightarrow A=120+18\pi\\\Rightarrow A=176.55\ cm^2$

3 0

2 years ago