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2 years ago

A) x²y-2xy+y=? b) ax²+4ax+4a=? c) 20x-60x²+45x³=?

Mathematics

1 answer:

bearhunter [10]2 years ago

5 0

Answer:

A)Y(x²-2x+1)=y(x-1)²

B) a (x²+4 x+4)= a(x+2)²

C)x(20-60x+45x)²

hope I helped :)

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What is the sum of series is numbers 64&66 ?<br> Using the summation notation

iragen [17]

Answer:

64. 6138

66. 8.078125

Step-by-step explanation:

Let's take it one number at a time.

For number 64:

$6(2)^{1-1}=6$

$6(2)^{2-1}=12$

$6(2)^{3-1}=24$

$6(2)^{4-1}=48$

$6(2)^{5-1}=96$

$6(2)^{6-1}=192$

$6(2)^{7-1}=384$

$6(2)^{8-1}=768$

$6(2)^{9-1}=1536$

$6(2)^{10-1}=3072$

Sum = 6 + 12 + 24 + 48 + 96 + 192 + 384 + 768 + 1536 + 3072

Sum = 6138

For number 66:

$12(-\frac{1}{2})^{0}=12$

$12(-\frac{1}{2})^{1}=-6$

$12(-\frac{1}{2})^{2}=3$

$12(-\frac{1}{2})^{3}=-1.5$

$12(-\frac{1}{2})^{4}=0.75$

$12(-\frac{1}{2})^{5}=-0.375$

$12(-\frac{1}{2})^{6}=0.1875$

$12(-\frac{1}{2})^{7}=-0.0078125$

$12(-\frac{1}{2})^{8}=0.046875$

$12(-\frac{1}{2})^{9}=-0.0234375$

Sum = 12 + -6 + 3 + -1.5 + 0.75 + -0.375 + 0.1875 + -0.0078125 + 0.046875 + -0.0234375

or to make things simpler:

Sum = 12 - 6 + 3 - 1.5 + 0.75 - 0.375 + 0.1875 - 0.0078125 + 0.046875 - 0.0234375

Sum = 8.078125

4 0

2 years ago

Van is studying the effects of an indoor pool

Artyom0805 [142]

Answer:

The answer is C

Step-by-step explanation:

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7 0

2 years ago

What is the volume of a sphere with a radius of 4 cm? Use 3. 14 for pi. Round to the nearest hundredth. 50. 24 cm³ 66. 99 cm³ 20

Nimfa-mama [501]

The volume of the sphere is 267. 95 cm³.

<h2>Given </h2>

The radius of the sphere is 4cm.

<h3>What is the volume of sphere?</h3>

The volume of a sphere is the three-dimensional space occupied by a sphere.

The volume of the sphere is determined by the following formula;

$\rm Volume = \dfrac{4}{3} \pi r^3$

Where r is the radius of the sphere.

Substitute all the values in the formula;

$\rm Volume = \dfrac{4}{3} \pi r^3\\\\\rm Volume = \dfrac{4}{3} \times (3.14) \times 4^3\\\\Volume = 4 \times 1.04 \times 64\\\\Volume = 267.95\ cm ^3$

Hence, the volume of the sphere is 267. 95 cm³.

To know more about Volume of Sphere click the link given below.

brainly.com/question/369459

4 0

2 years ago

I need help with this also I had was to repost it again because someone deleted it

igomit [66]

Answer: 8:05

Step-by-step explanation:

8 0

1 year ago

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John drove his car 385 miles on one tank of gas. If his car had 15.4 gallons of gas in it, how many miles per gallon did John dr

sleet_krkn [62]

Answer:25

Step-by-step explanation:

385/15.4=25

6 0

2 years ago

Read 2 more answers

A) x²y-2xy+y=? b) ax²+4ax+4a=? c) 20x-60x²+45x³=?​

A) x²y-2xy+y=? b) ax²+4ax+4a=? c) 20x-60x²+45x³=?