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shtirl [24]
3 years ago
8

22. The product of two negative integers is the largest 2-digit number. If one of the numbers

Mathematics
2 answers:
natulia [17]3 years ago
4 0

Answer:

x = -9

Step-by-step explanation:

Let unknown number = x

Largest 2-digit number  = 99

x * (-11) = 99

         x = 99 ÷ (-11)

       x = -9

Aleksandr [31]3 years ago
4 0

Answer:

-9

Step-by-step explanation:

1. The largest 2-digit number is 99

2. So, our problem should look like this: (-11) x ?= 99

3. Divide 99 by -11, and that'll equal -9

hope this helps! <3

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The height after t seconds of an object projected upward with an initial velocity of 48 feet per second from a 210-foot tower ca
svetlana [45]

Given:

The height h of an object after t seconds is

h=-16t^2+48t+210

The height of a neighboring 50-foot tall building is modeled by the equation h=50.

The time (t) when the object will be at the same height as the building is found to be t = –2 and t = 5.

To find:

The statement which describes the validity of these solutions.

Solution:

We have,

h=-16t^2+48t+210

Here, t is the time in seconds.

For t=-2,

h=-16(2)^2+48(-2)+210

h=-64-96+210

h=50

For t=5,

h=-16(5)^2+48(5)+210

h=-400+240+210

h=50

So, the value of h is 50 at t=-2 and t=5.

We know that time is always positive so it cannot be negative value. It means t=-2 is not possible.

The solution t = 5 is the only valid solution to this system since time cannot be negative.

Therefore, the correct option is C.

6 0
3 years ago
All of the following are ways to write 25 percent of N except
Archy [21]

Nothing on your list <em><u>IS</u></em> a way to write 25 percent.


5 0
3 years ago
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Mademuasel [1]

Answer:

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6 0
3 years ago
Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains 200 L of a dye solution with a
In-s [12.5K]

Answer: t= 460.52 minutes

Step-by-step explanation:Q'=Q/100

Q'= rate in and out of water

Finding the differential equation

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Integrating both sides gives

Ln/Q/ = -(1/100)t + c2

But c+c1=C2= A constant

Q=C2e(-t/100)

200e-(t/100)

t= ln200

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3 years ago
Darma is edging a tablecloth with lace. The table cloth is 210 cm by 180 cm. How much lace does she need?
aksik [14]
I did my calculations and i rechecked it by redoing the question and I got "37800".
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