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2 years ago

Add. −4+(−19) Enter your answer in the box. help please!

Mathematics

2 answers:

olga2289 [7]2 years ago

8 0

Answer:

-23

Step-by-step explanation:

-4+(-19)

= -4-19

= -23

77julia77 [94]2 years ago

7 0

Answer:

-4+(-19)

open the bracket

(+)×(-) = -

-4-19= -23

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Answer:

25%

Step-by-step explanation:

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3 years ago

Which method can be used to find the interquartile range for a set of data ?

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The interquartile range (IQR) can be found by finding the difference of the upper and lower quartiles

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4 years ago

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3 years ago

The radius of the base of a cylinder is increasing at a rate of 7 millimeters per hour. The height of the cylinder is fixed at 1

Ilya [14]

Answer:

The rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

Step-by-step explanation:

Given:

Rate of increase of base of radius of base of cylinder = 7 mm/hr

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Radius at a certain instant = 12 mm

To find rate of change of volume of cylinder at that instant.

Solution:

Let $r$ represent radius of base of cylinder at any instant.

Rate of increase of base of radius of base of cylinder can be given as:

$\frac{dr}{dt}=7\ mm/hr$

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$V=\pi\ r^2h$

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$\frac{dV}{dt}=\pi\ h\ 2r\frac{dr}{dt}$

Plugging in the values given:

$\frac{dV}{dt}=\pi\ (1.5)\ 2(12)(7)$

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Using $\pi=3.14$

$\frac{dV}{dt}=252(3.14)$

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3 years ago

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Answer:

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Step-by-step explanation:

-45=5y

Divide each side by 5 to isolate y

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3 years ago

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