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3 years ago

Compatible numbers to estimate 23.6 / 7

1 answer:

8 0

Since 42 ÷ 6 = 7, we will round 4,189 to 4,200 and 6.3 to 6 . Estimate: ... When estimating decimal quotients, it is easiest to use compatible numbers.

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Pls help, I don't understand

Ne4ueva [31]

1 Yes 2. Yes

Step-by-step explanation:

they are similar because in problem one each side is related by a factor of 3

in problem 2 each side is related by a factor of 2.

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3 years ago

29 plus x Equals 90 im a lil smart so ntm

solniwko [45]

$29 + x = 90 \\ x = 61$

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4 years ago

Simplify the expression - 3+(-2/5)

xxMikexx [17]

Answer:

The answer is -17/5

Step-by-step explanation:

hope that helps

6 0

3 years ago

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Please help! ASAP

vaieri [72.5K]

891 were sold
.55x1800= 990
10% of 990 roses is 99 (99 is left over)
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3 years ago

Use the disk method or the shell method to find the volumes of the solids generated by revolving the region bounded by the graph

diamong [38]

Answer:

a) 8π

b) 8/3 π

c) 32/5 π

d) 176/15 π

Step-by-step explanation:

Given lines : y = √x, y = 2, x = 0.

a) The x-axis

using the shell method

y = √x = , x = y^2

h = y^2 , p = y

vol = ( 2π ) $\int\limits^2_0 {ph} \, dy$

= $( 2\pi ) \int\limits^2_0 {y.y^2} \, dy$

∴ Vol = 8π

b) The line y = 2 ( using the shell method )

p = 2 - y

h = y^2

vol = ( 2π ) $\int\limits^2_0 {ph} \, dy$

= $( 2\pi ) \int\limits^2_0 {(2-y).y^2} \, dy$

= ( 2π ) * [ 2/3 * y^3 - y^4 / 4 ] ²₀

∴ Vol = 8/3 π

c) The y-axis ( using shell method )

h = 2-y = h = 2 - √x

p = x

vol = $(2\pi ) \int\limits^4_0 {ph} \, dx$

= $(2\pi ) \int\limits^4_0 {x(2-\sqrt{x} ) } \, dx$

= ( 2π ) [x^2 - 2/5*x^5/2 ]⁴₀

vol = ( 2π ) ( 16/5 ) = 32/5 π

d) The line x = -1 (using shell method )

p = 1 + x

h = 2√x

vol = $(2\pi ) \int\limits^4_0 {ph} \, dx$

Hence vol = 176/15 π

attached below is the graphical representation of P and h

3 0

3 years ago