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3 years ago

Someone please help me with this question

Mathematics

2 answers:

NISA [10]3 years ago

6 0

Answer:

The elevator started at floor 7

Step-by-step explanation:

The y-intercept is when x is 0

In this situation x represents time, so when no time has passes yet y is at 7

This means that the elevator was at floor before any time passed (before it started moving)

hope this helps, lmk if it doesnt :)

mestny [16]3 years ago

4 0

Answer:

how many floors the elevator goes down per unit of time

Step-by-step explanation:

not sure what the unit of time is but its seconds or minutes im pretty sure it doesnt say

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A car rental agency charges 34 $ per day to rent a car and 12.95$ per day for a global positioning system (GPS). Customers are

Whitepunk [10]

Answer:

Step-by-step explanation:

A) 34x + 12.95g + 3.60p = b

34x = $ per day to rent

12.95g = $ per day you have GPS

3.60p = $ per gallon

b = total bill

97.35

C) 34(1) + 12.95(1) + 3.60(14) = 97.35

That's how the function would look after you plugged the numbers from the problem in.

I am not 100% if I did this right but it's better than nothing, so you can build off of this.

6 0

3 years ago

The sum of a number and 4 is equal to -43. Find the number

Artist 52 [7]

Answer:

the number is -47..

Step-by-step explanation:

let the number be'x'

x+4= -43
x= -43-4
x= -47

hope it helps.

<h2>stay safe healthy and happy.</h2>

4 0

2 years ago

Read 2 more answers

N is a positive integer

Murrr4er [49]

Part (1)

n is some positive integer. Let's say for now that n is even. So n = 2k, for some integer k

This means n-1 = 2k-1 is odd since subtracting 1 from an even number leads to an odd number.

Now multiply n with n-1 to get

n(n-1) = 2k(2k-1) = 2m

where m = k(2k-1) is an integer

The result 2m is even showing that n(n-1) is even

------------

Let's say that n is odd this time. That means n = 2k+1 for some integer k

And also n-1 = 2k+1-1 = 2k showing n-1 is even

Now multiply n and n-1

n(n-1) = (2k+1)(2k) = 2k(2k+1) = 2m

where m = k(2k+1) is an integer

We've shown that n(n-1) is even here as well.

------------

So overall, n(n-1) is even regardless if n is even or if n is odd.

Either n or n-1 will be even. If you multiply an even number with any number, the result will be even.

=======================================================

Part (2)

n is some positive integer

2n is always even since 2 is a factor of 2n

2n+1 is always odd because we're adding 1 to an even number. The sequence of integers goes even,odd,even,odd, etc and it does this forever.

-----------

Another way to see how 2n+1 is odd is to divide 2n+1 over 2 and you'll find that we get (2n+1)/2 = 2n/2+1/2 = n+0.5

The 0.5 at the end is not an integer, so there's no way that (2n+1)/2 is an integer; therefore 2n+1 is odd.

6 0

2 years ago

If a is an integer, which of the

sweet [91]

So to work this out we need to find the 4th root of each of those and pick the one that gives an integer.

A: $\sqrt[4]{1.6*10^1^1} = 632.455...$ This is a decimal therefore not an integer.

B: $\sqrt[4]{1.6*10^1^2} =1124.682...$ Again a decimal, therefore not an integer.

C: $\sqrt[4]{1.6*10^1^3} =2000$ This is a whole number, so it is an integer.

D: $\sqrt[4]{1.6*10^1^4} =3556.558...$ Decimal, therefore not an integer

E: $\sqrt[4]{1.6*10^1^5} =6324.555...$ Again a decimal, not an integer.

The only one that gives an integer when put to the 4th root is C, therefore:

$1.6*10^1^3$ could be A^4, as the 4th root of it is an integer.

5 0

3 years ago

Graph the Quadratic Function given. y = -x^2 - 4x - 3

Dovator [93]

Answer:

Concave down

Y-intercept: (0,-3)

X-intercepts: (-1,0) (-3,0)

Vertex: (-2,1)

6 0

2 years ago