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3 years ago

HELLOPPPPPPPPPPPOPPPPPPPPP

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

3 0

(2x+15) +x=90
- 15 = -15
2x+x= 75
3x= 75
3 = 3
x= 25

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2. The value of x + x(x^x) when x = 2 is:

Levart [38]

Answer:

(a) 10.

Step-by-step explanation:

When x = 2 x + x(x^x) =

2 + 2(2^2)

= 2 + 2*4

= 2 + 8

= 10.

4 0

3 years ago

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Which one is it?? answer right for brain liest

user100 [1]

Answer:

20 (D)

Step-by-step explanation:

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2.5 * 8 = 20

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3 years ago

A wise man once said, "500 reduced by 4 times my age is 188." What is his age?

hoa [83]

Answer:

125

Step-by-step explanation:

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3 years ago

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Rosa finds the product of 32 and 96. she rewrites 96 as a sum or difference of two numbers and uses the distributive property. w

Nady [450]

Solution:

We are given with the two numbers=32 and 96

Product of the given numbers= $32*96= 3072$

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As we know, the Distributive property is $a(b+c)= ab+ac$

Now, $32*96 = 32*(100-4) = 3200-128$

So, option 'd' is correct

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3 years ago

Question Part Points Submissions Used Use the method of cylindrical shells to find the volume V generated by rotating the region

pochemuha

Answer:

$V=\frac{448\pi}{5}$

Step-by-step explanation:

We are given that curves y= $3x^4$ is rotated about x=4 .

Given that y=0 and x=2

We have to find the volume V generated by rotating the region bounded by the curves with the help of method of cylindrical shells.

First we find the intersection point

Substitute y=0 then we get

0= $3x^4$

x=0

Hence, x changes from 0 to 2.

Radius =4-x

Height of cylinder =y= $3x^4$

Surface area of cylinder = $2\pi r h$

Volume V generated by the rotating curves

= $2\pi\int_{0}^{2} (4-x)(3x^4)dx$

V= $2\pi\int_{0}^{2}(12x^4-3x^5)dx$

V= $2\pi[\frac{12x^5}{5}-\frac{x^6}{2}]^2_0$

V= $2\pi[\frac{384}{5}-32]$

V= $2\pi\frac{384-160}{5}$

$V=\frac{448\pi}{5}$

Hence, the volume V generated by rotating the region by the given curves about x =4= $\frac{448\pi}{5}$ .

6 0

4 years ago