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Vera_Pavlovna [14]
3 years ago
12

An elevator is traveling underground at a constant rate. The equation y= -2x - 10 can be used to represent this situation, where

y is the position of the elevator underground in feet and x is the number of seconds the elevator has been traveling Which statement best describes the position of the elevator, given this equation?
O From a starting position of 2 feet underground, the elevator is descending 10 feet per second

O From a starting position of 10 feet underground, the elevator is descending 2 feet per second

O From a starting position of 2 feet underground, the elevator is ascending 10 feet per second

O From a starting position of 10 feet underground, the elevator is ascending 2 feet per second​
Mathematics
1 answer:
professor190 [17]3 years ago
8 0

4 is correct

reason is because the number next to x is the constant number and the end number is where you started

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Find the value of the expression.<br> c²b<br> for b = 5 and c = 3
kicyunya [14]

Answer:

45

Step-by-step explanation:

c^2*b

We know that c is 3, and b is 5, so we can substitute them in

3^2*5

Solve the exponent first

9*5

Multiply

45

7 0
3 years ago
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What is the value of the expression below when y = 4 and z = 4 , 6y - 3z ? Please answer !!!!!!!!! Will mark Brianliest !!!!!!!!
yanalaym [24]

Answer:

12

Step-by-step explanation:

6y - 3z

6(4) - 3(4)

24 - 12

12

Hope this helps plz mark me as Brainliest

7 0
4 years ago
Hello, I need some assistance with this homework question, please? This is for my precalculus homework. Q5
snow_tiger [21]

Answer:

T\text{he domain of H\lparen x\rparen is }\lbrace x\lvert x-3,1\rbrace

Step-by-step explanation:

The domain of a function is all the set of possible x-values that the function can take. Then, for the given function:

H\left(x\right)=\frac{-7x^2}{\left(x-1\right)\left(x+3\right)}

The function is undefined when the denominator is equal to 0, then equalize each factor of the denominator to 0:

\begin{gathered} x-1=0 \\ x=1 \\  \\ x+3=0 \\ x=-3 \\  \\ \text{ Then, the domain of H\lparen x\rparen is }\lbrace x\lvert x\ne-3,1\rbrace \end{gathered}

4 0
1 year ago
A concrete mix calls for 3 buckets of sand for every gallon of water. How much water is needed for 1 bucket of sand?
mojhsa [17]

Step-by-step explanation:

Write a proportion:

3 buckets / 1 gallon = 1 bucket / x gallons

Cross multiply and solve:

3x = 1

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You need 1/3 of a gallon of water.

8 0
3 years ago
I don't really understand pls help asap
maria [59]

Answer:

It is not proportional

Step-by-step explanation:

    To figure out if something is proportional they have to equal the same thing.

   As you can see on the problem 0.2 and 0.2 are the same thing, and since one is on the numerator and one is on the demoninator those two can cross out.

    Now we come to the 0.08 and the 0.8.

     They are not the same thing the 0.08 has an extra 0.

So this is not proportional

<em>-I hope this helps! -Karen</em>      

3 0
2 years ago
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