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3 years ago

Estimate by rounding the divisor to the nearest tens place and the dividend to the nearest

Mathematics

1 answer:

Setler [38]3 years ago

5 0

Answer:

Estimate: 90

Quotient: 95

Remainder: 8/59

Step-by-step explanation:

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Dominic is looking over his spending pattern for the past week to try to determine how much money he had on Sunday. This is Domi

gavmur [86]

Dominic is looking over his spending pattern for the past week to try to determine how much money he had on Sunday. On Monday, his credit is $100. On Wednesday, his credit is $112. On Friday, his debit is $83. On Sunday, his debit and credit are $100 and $62 respectively.

6 0

3 years ago

Read 2 more answers

The largest doll is 12 inches tall. The height of each of the other dolls is 710 the height of the next larger doll. Write an ex

Ahat [919]

Largest doll = 12 inches
2nd doll = (12) x 0.7
3rd doll = (12 x 0.7) x 0.7
4th doll = [(12 x 0.7) x 0.7) x 0.7

So, the height of the nth doll can be expressed as: 12 x 0.7^(n-1)

Example: 4th doll = 12 x 0.7^(4-1) = 12 x 0.7^3

6 0

3 years ago

A spherical balloon currently has a radius of 19cm. If the radius is still growing at a rate of 5cm or minute, at what rate is a

miv72 [106K]

Answer:

22670.8 cm³/min

Step-by-step explanation:

Given:

Radius of the balloon at a certain time (r) = 19 cm

Rate of growth of radius is, $\frac{dr}{dt}=5\ cm/min$

The rate at which the air is pumped in the balloon can be calculated by finding the rate of increase in the volume of the balloon.

So, first we find the volume of the sphere in terms of 'r'. As the balloon is spherical in shape, the volume of the balloon is equal to the volume of a sphere. Therefore,

Volume of balloon is given as:

$V=\frac{4}{3}\pi r^3$

Now, rate of increase of volume is obtained by differentiating both sides of the equation with respect to time 't'.

Differentiating both sides with respect to time 't', we get:

$\frac{dV}{dt}=\frac{d}{dt}(\frac{4}{3}\pi r^3)\\\\\frac{dV}{dt}=\frac{4\pi}{3}(3r^2)(\frac{dr}{dt})\\\\\frac{dV}{dt}=4\pi r^2(\frac{dr}{dt})$

Now, plug in 19 cm for 'r', 5 cm per minute for $\frac{dr}{dt}$ and solve for $\frac{dV}{dt}$ . This gives,

$\frac{dV}{dt}=4\pi (19 cm)^2(5\ cm/min)\\\\\frac{dV}{dt}=4\times 3.14\times 361\times 5\ cm^3/min\\\\\frac{dV}{dt}=22670.8\ cm^3/min$

Therefore, the rate at which the air is being pumped into the balloon is 22670.8 cm³/min.

4 0

4 years ago

If a triangle has side lengths of 9 cm, 12 cm, and 15 cm, what type of a triangle is it? isosceles obtuse right acute

pav-90 [236]

It's a right triangle
if there is one 90°

3 0

3 years ago

Help me pleaseeeeeee.

Zinaida [17]

Step-by-step explanation:

1. x = 1/2 or 3

2. x = 3 or 2

plz mark my answer as brainlist plzzzz vote me also

3 0

3 years ago