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3 years ago

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Mathematics

2 answers:

Mama L [17]3 years ago

5 0

Answer:

Step-by-step explanation:

hope it help

andreyandreev [35.5K]3 years ago

4 0

Answer:

true

Step-by-step explanation:

hope this helps have an amazing day!

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Andrew has a fish tank in the shape of a rectangular prism, and he needs to know the volume of water necessary to fill the tank.

Alex

Answer:

The correct option is D.

Step-by-step explanation:

Domain is the set of all posible

The volume of a rectangular prism is

$V=\text{Base area}\times height$

where,

$\text{Base area}=length\times width$

Dimensions can not be negative. So, the width and volume are always positive.

From the graph it is noticed that

In interval $(-\infty, -5)$ , width and volume is negative, so $(-\infty, -5)$ interval is not the domain.

In interval (-5,0), width is negative, so (-5,0) interval is not the domain.

In interval (0,3), volume is negative, so (0,3) interval is not the domain.

In interval $(3,\infty)$ , width and volume is negative, so $(3,\infty)$ interval is not the domain.

Therefore the correct option is D.

3 0

3 years ago

Read 2 more answers

An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 4057 feet and Plane B is at an altitude

katrin2010 [14]

Answer:

46 seconds
6851.5 feet

Step-by-step explanation:

The altitude of each plane can be expressed by an equation that adds the initial altitude and the product of time and its rate of climb.

plane A: y = 4057 +60.75t

plane B: y = 5000 +40.25t

We want to find the time when their altitudes are the same:

4057 +60.75t = 5000 +40.25t . . . . equate the expressions for y

20.50t = 943 . . . . . . . . . subtract (40.24t +4057)

t = 46 . . . . . . . . . . . . divide by the coefficient of t

At t=46, the altitude of the planes will be ...

y = 5000 +40.25(46) = 5000 +1851.5 = 6851.5

The planes are at the same altitude after 46 seconds.

Both planes will be at an altitude of 6851.5 feet.

3 0

3 years ago

A girl is now one-fourth as old as her father, and in seven years, she will be one-half as old as her father was twelve years ag

irakobra [83]

The girl is 13 the father is 52

3 0

3 years ago

Read 2 more answers

3. Decide whether each equation is true or false, and explain how you know.

BARSIC [14]

Answer:

a.false

b.true

c.false

d.I really can't get about it.

e.false

Step-by-step explanation:

So,here;

a.9.9.3=35 is given

or,243=35 (which is false)

b.7+7+7=3+3+3+3+3+3+3

or,21=21 (which is true)

c.2/3/2=2/3

or,2*2/3=2/3

or,4/3=2/3(which is false)

e.6+6+6=63

or,18=63 (which is false)

5 0

3 years ago

Is y = -4x + 15 parallel to 8x + 2y = 7

anygoal [31]

Answer:

yes

Step-by-step explanation:

4 0

3 years ago