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3 years ago

F(x)=71(0.93)^2x growth or decay

Mathematics

1 answer:

Sonja [21]3 years ago

6 0

It's decay because it's going to go down when solved. ;)

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2. A triangle has sides of lengths 15, 23, and 28. Is it a right triangle? Explain.

Gelneren [198K]

Answer:

Step-by-step explanation:

A question on a math quiz asks, "What is 175% of 72?" Petra calculates 12.6 as the answer. Is this a reasonable answer? Explain

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3 years ago

Can someone plzzzz help me with these questiosn

Vanyuwa [196]

No.2 is B because they are on a line together so they are aligned/corresponding angles and are equal

4 0

3 years ago

PLS ANSWER ASAPP!!!<br> Order the numbers in the image above from least to greatest

Brrunno [24]

Answer:

The second one

Step-by-step explanation:

Square root of 5 is about 2.24

5/2 is 2.5

2.71 is 2.71

2 3/4 is 2.75

2.24, 2.5, 2.71, 2.75

5 0

3 years ago

A plane flew 720 mi with a steady 30 mi/h tailwind. The pilot then returned to the starting point, flying against that same wind

NNADVOKAT [17]

Answer:

Plane's speed is 150 miles/hour

Step-by-step explanation:

Let the plane's airspeed be x

Speed of wind is 30 miles/hour

When a plane flew with the wind , Speed = (x+30)

So, the speed plain with wind on going = (x+30)

Since we are given that on returning plane fly against the wind .

So,When a plane flew against the wind , Speed = (x-30)

So, the speed plain against wind on returning = (x-30)

Distance = 720 miles .

$Time = \frac{Distance}{Speed}$

So, time on going $=\frac{720}{(x+30)}$

Time on returning $=\frac{720}{(x-30)}$

Now we are given that the total time for the whole trip (going + returning) = 10 hours.

So, $\frac{720}{(x+30)}+\frac{720}{(x-30)}=10$

$\frac{720x-21600+720x+21600}{(x+30)(x-30)}=10$

$720x-21600+720x+21600=10(x+30)(x-30)$

$720x+720x=10(x+30)(x-30)$

$1440x=10(x^2 -[30]^2)$

$144x=x^2 -900$

$x^2-144x -900=0$

$x^2-150x+6x -900=0$

$x(x-150)+6(x -150)=0$

$(x-150)(x+6)=0$

$x= 150,x= -6$

So, the plane's speed is 150 miles/hour

4 0

3 years ago

Find the number of sides of a regular polygon if the measure interior angle is 160°

MrMuchimi

360/20 is equal to 18 sides

6 0

3 years ago