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3 years ago

Estimate the sum of the decimals below by rounding each summand to the

Mathematics

1 answer:

xeze [42]3 years ago

6 0

Answer:

it would be rounded to 9 as the nearest whole number (the number in decimal form is 9.304 when added up to get the sum)

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Find the area of the surface generated when the given curve is rotated about the x-axis. y = 4 squareroot x on [60, 77] The area

In-s [12.5K]

Answer:

A≅562.45π u²

Step-by-step explanation:

Knowing that the volume the a solid is V=πR²h, then A=πR², therefore

A=π(4√x), integrating on both sides ∫A=4π∫√xdx ⇒ ∫√xdx = $\frac{2}{3}x^{3/2}$

evaluated (60,77), then

$A=\frac{8\pi }{3}(77^{3/2}-60^{3/2})\\A=\frac{8\pi }{3}(675.67-161.75})\\A=562.45\pi$

8 0

3 years ago

Whats the solutions!?? look at the picture

gtnhenbr [62]

Answer:

3/x=y

Step-by-step explanation:

if not am sorry

6 0

3 years ago

7.959 to one decimal place .

o-na [289]

Answer:

8.0

Step-by-step explanation:

Since we are trying to find the nearest tenth decimal place, we look at the hundredths place to figure it out. Since it is ≥5, we round up.

8 0

3 years ago

Read 2 more answers

Determine the kinetic energy of 745-kg roller coaster car that is moving with a speed of 14.9 m/s

atroni [7]

Answer:

≈82698.73 kg m²/s

Step-by-step explanation:

K.E.=1/2mv²=1/2×745×14.9²=82698.725 kg m²/s

5 0

3 years ago

The product of two irrational numbers is (sometime, always, never) rational.

Mrac [35]

sometimes

Step-by-step explanation:

irrational numbers are numbers that cannot be expressed as a quotient of 2 numbers

rational numbers are numbers that can be expressed as a fraction.

for example let's take these examples of iirational numbers:

$\sqrt{2} \times \sqrt{2} = 2$

$\pi \times \pi = 9.86960....$

the 1st product (2) can be written as a fraction but the second one cannot be written as a fraction

7 0

2 years ago