3 years ago

I need help!! please and thank you!!!

Mathematics

1 answer:

tiny-mole [99]3 years ago

7 0

Answer:

Step-by-step explanation:

..............................

You might be interested in

What is the surface area of this triangular prism rounded to the nearest tenth?

Vesna [10]

The answer is C.
SA = bh + (s1 + s2 + s3)H
SA = (6.8)(5.1) + (6.8 + 5.1 + 8.5)(2.5) = 85.68

8 0

2 years ago

Read 2 more answers

A road perpendicular to a highway leads to a farmhouse located d miles away. An automobile traveling on this highway passes thro

pshichka [43]

Answer:

$\frac{dh}{dt}=\frac{30r}{\sqrt{d^{2}+900}}$

Step-by-step explanation:

A road is perpendicular to a highway leading to a farmhouse d miles away.

An automobile passes through the point of intersection with a constant speed $\frac{dx}{dt}$ = r mph

Let x be the distance of automobile from the point of intersection and distance between the automobile and farmhouse is 'h' miles.

Then by Pythagoras theorem,

h² = d² + x²

By taking derivative on both the sides of the equation,

$(2h)\frac{dh}{dt}=(2x)\frac{dx}{dt}$

$(h)\frac{dh}{dt}=(x)\frac{dx}{dt}$

$(h)\frac{dh}{dt}=rx$

$\frac{dh}{dt}=\frac{rx}{h}$

When automobile is 30 miles past the intersection,

For x = 30

$\frac{dh}{dt}=\frac{30r}{h}$

Since $h=\sqrt{d^{2}+(30)^{2}}$

Therefore,

$\frac{dh}{dt}=\frac{30r}{\sqrt{d^{2}+(30)^{2}}}$

$\frac{dh}{dt}=\frac{30r}{\sqrt{d^{2}+900}}$

3 0

3 years ago

Could someone help me with a question?

11111nata11111 [884]

Whats the question ill be happy to help

5 0

2 years ago

Write the equation of the line that passes through

Tom [10]

Answer:

y=63x+65

Step-by-step explanation:

7 0

2 years ago

Pleas help me, this is confusing.

Dmitry_Shevchenko [17]

Ask your teacher or a family member

7 0

2 years ago

Read 2 more answers