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zlopas [31]
3 years ago
10

The height of each story of an office building is 9 3/4 feet. The height is measured from the ceiling to the floor. The building

has three underground levels for parking. A car is parked two levels below ground. At what elevation are the car’s tires relative to the ground level? Assume the ground level is at zero feet.
A) -19 1/2 feet
B) -12 feet
C) 8 feet
D) 19 1/2 feet
please explane how??​
Mathematics
2 answers:
chubhunter [2.5K]3 years ago
4 0
A is the correct answer
lesya692 [45]3 years ago
3 0

Answer:

The correct answer is A) -19 1/2

Step-by-step explanation:

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Kevin and Randy have a jar containing 52 coins all of which are either quarters and nickels the total value of the coins in the
zysi [14]

Answer: 32 nickels and 20 quarters :)

Step-by-step explanation:

first lets make an equation

quarters - 25 cents so 25x

nickels - 5 cents so 5y

^ in those expressions, we've established that the variable (x or y) as the amount of coins

so 25 * however many quarters plus 5 * however many nickels will give you the total amount of cents :)

since we're working in cents, lets change $6.60 to 660 cents

25x + 5y = 660

now the problem is that we cant solve this equation due to two different variables

but we know that the total amount of coins is 52, so we can state that

x + y = 52

to make this easier to eventually plug into our previous equation, just pick a variable and isolate it. i'll do x

x = 52 - y

okkk now lets plug it into our equation

25 (52 - y) + 5y = 660

1300 - 25y + 5y = 660

1300 - 20y = 660

-1300           -1300

-20y = -640

y = -640 / -20

y = 32

so we know that we have 32 nickels

now we plug in that answer to our second equation to find how many quarters

x + y = 52

x + 32 = 52

x = 52 - 32

x = 20

so we have 32 nickels and 20 quarters :))

hope this helped

3 0
3 years ago
What is the sum of angles in a triangle
andreev551 [17]

Answer:

The sum of the three angles of any triangle is equal to 180 degrees.

Step-by-step explanation:

3 0
3 years ago
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How do you convert 50 miles per hour to miles per minute
docker41 [41]

So how many minutes are in an hour?

Divide 50 by that number and that's how you get the distance traveled by miles per minutes

5 0
3 years ago
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Serhud [2]

Answer:

i believe the answer would be y= -x-4

Step-by-step explanation:

a line that is perpendicular, will have and opposite reciprocal slope, so:

the slope of the line y=x-4 is 1, and the reciprocal of 1 is also 1.

now take the opposite of it, which is -1.

so the perpendicular line equation would be y=-x-4

i hope this helps :D

8 0
3 years ago
When they are both racing on hoverboards, Victoria is 3 times as fast as her brother Max. When she is on foot, she is 3 times sl
NARA [144]

Answer:

Race completed in 48 minutes.

Step-by-step explanation:

Let the speed of Max on hoverboard is = x

Then as per question speed of Victoria on hoverboard = 3x

Now it has been given in the question that speed of Victoria on foot is 1/3 of the speed of Max on hoverboard that will be = x/3

Now we will form the equation.

As we know the formula speed = distance/time

Let the time taken by both to complete the race be t minutes.

Distance covered by Victoria in 12 minutes + Distance covered by Victoria on foot = distance covered by Max on hoverboard

Then the equation will be

12(3x)+(1/3)x(t-12)=xt

36x+\frac{xt}{3}-4x=xt

x(36+\frac{t}{3}-4)=xt

36+\frac{t}{3}-4=t

32=t-\frac{t}{3}

\frac{2t}{3}=32

t=\frac{(32)3}{2}=48

So 48 minutes it took to complete the race.

4 0
3 years ago
Read 2 more answers
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