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ruslelena [56]
3 years ago
7

A construction company recently built a thirty-story building on a lakefront in China. Architects and engineers designed the bui

lding to withstand a magnitude 9.0 earthquake. The most impressive thing about this building, though, is that it took only 360 hours to build.
How many days did it take to construct the building?
10 days
15 days
20 days
25 days
Mathematics
2 answers:
MrRa [10]3 years ago
8 0

Answer:

15 days

360/24 = 15

Hope this helps

STALIN [3.7K]3 years ago
4 0

Answer:

15 days

Step-by-step explanation:360/24=15

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Which of the following equations is represented by a graph that is centered at (- 6, - 8) and includes the point (0, - 8) ?
Lera25 [3.4K]

Answer:

C.

Step-by-step explanation:

As the center is (-6, -8) the 2 factors on the left will be (x + 6) and (x + 8) so it's either A or C.

When x = 0 y = -8 so substituting we have:

(0 + 6)^2 + (-8 + 8)^2 = 36 + 0 = 36.

So it's choice C.

4 0
4 years ago
Find the total cost of a spa treatment of $42 including 6% sales tax and 20% tip
Naily [24]
Cost of the spa treatment = $42
Percentage of sales tax = 6%
Percentage of tips = 20%
Normally the tips amount is calculated before adding sales tax.
Then
Amount of tips given = (20/100) * 42
                                  = (1/5) * 42
                                  = 8.40 dollars
Amount of sales tax taken = (6/100) * 42
                                           = 252/100
                                           = 2.52 dollars
Then 
The total amount spent for spa treatment = (42 + 8.40 + 2.52) dollars
                                                                   = 52.92 dollars
So we can see that $52.92 has been spent in total for spa treatment and this amount includes a sales tax of $2.52 and a tip of $8.40.
7 0
3 years ago
A box contains 5 blue balls, 2 white balls and 3 black balls. A ball is chosen randomly. Find the probability that the chosen ba
Nimfa-mama [501]

Answer:

7/10 or 70%

Step-by-step explanation:

Add the number of each color of balls together to get the total

5 + 2 + 3 = 10

Add the number of all the balls that aren't black

5 + 2 = 7

Then divide how many balls that aren't black by the total. This gives us the probability the ball you choose is not black

7/10 = 0.7 or 70%

5 0
3 years ago
Answer Question QUICKILY please
Mariana [72]
In a circle, the internal vertical angles have a formula of \frac{a + b}{2}

In this case, the formula would be: \frac{4x + 2x}{2} = \frac{6x}{2} = 3x

We know that whole circle is 12x. And 12x is equal to 360°. When we put that into equation: 12x = 360
x = 30

If x is 30°: 3x =3 \times 30 = 90

So, angle 7 is 90°.

5 0
3 years ago
Number 28 HELP!!!! I don't know
Leokris [45]
It is letter C.) can u tell
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3 years ago
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