All categories

3 years ago

What is the product? (-2d^2+s)(5d^2-6s)

Mathematics

1 answer:

wlad13 [49]3 years ago

5 0

The answer is −10d4+17d2s−6s2

You might be interested in

3. A person standing 3 feet away from the base of a lamp post casts a shadow 4 feet long. If the person is 6 feet tall and walks

german

Answer:

533.33 ft/min

Step-by-step explanation:

We are given that

x=3 feet

y=4 feet

Height of person,h=6 feet

$\frac{dx}{dt}=400 ft/min$

Triangle ABC and A'B'C are similar because all right triangles are similar

By using similarity property

$\frac{h'}{6}=\frac{7}{4}$

$h'=10.5 feet$

$x+y=3+4=7 feet$

$\frac{h'}{6}=\frac{x+y}{y}$

$\frac{10.5}{6}=\frac{x+y}{y}$

$10.5y=6x+6y$

$10.5y-6y=6x$

$4.5y=6x$

Differentiate w.r.t t

$4.5\frac{dy}{dt}=6\frac{dx}{dt}$

$\frac{dy}{dt}=\frac{6\times 400}{4.5}ft/min$

$\frac{dy}{dt}=533.33ft/min$

Hence, If the person is 6 feet tall and walks away from the lamp post at a speed of 400 feet per minute then his shadow moving at the rate 533.33 ft/min

7 0

3 years ago

Least to greatest 2/3 7/6 1/8 9/10 how to Putin proper order

Mashutka [201]

Convert fractions by d<span>ividing the top of the fraction by the bottom and then multiply by 100
--------------
</span>2/3 = 66.6667 ≈ 66.7%

7/6 = <span>116.6667 </span>≈ 116.7%

1/8 = 12.5%

9/10 = 90%
-----------------------------
Order
1/8, 2/3, 9/10, 7/6

4 0

3 years ago

Read 2 more answers

Find the greatest commen factor of 96 and 48

kirza4 [7]

48 is the greatest common factor

4 0

4 years ago

Read 2 more answers

The value in dollars, v(x), of a certain truck after x years is represented by the equation v(x) = 32,500(0.92)x. To the nearest

max2010maxim [7]

Answer: