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Andreyy89
3 years ago
12

Find the percentage 40% of an hour

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
5 0
36 is 40 percent of an hour
denis23 [38]3 years ago
5 0

Answer:

24 minutes

Step-by-step explanation:


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The graph shows a function.<br> Find the value of b and d.
True [87]

Answer:

<em>The required values are b=-6 and d=4</em>

Step-by-step explanation:

The graph corresponds to the function

r(x) =x^2+bx^2+8x+d

We are required to find the values of b and d.

They can be found by using two points that are clearly visible on the graph. For example, the points (0,4) and (2,0) belong to the function. Substituting their values in the function:

4 =0^2+b*0^2+8*0+d

Simplifying:

4 = d

d = 4

Now use the point (2,0):

0 =2^2+b*2^2+8*2+d

Since d=4, and calculating

0 =4+4b+16+4

Simplifying:

4b = -24

Dividing by 4:

b = -24/4 = -6

b = -6

The required values are b=-6 and d=4

5 0
3 years ago
Write an equation in point-slope form of the line that passes through the given point and with the given slope m.
mart [117]
Using point slope formula it would be
Y - 5 = 2 • ( x + 8)
3 0
3 years ago
Read 2 more answers
Which blocks have a volume between 20 and 30 cubic centimeters?
Artyom0805 [142]

Answer: c

Step-by-step explanation:

7 0
3 years ago
Substitution property of equality if y=-5 and 7x+y=11, then____. A. 7(-5) + y=11 B.7x-5=11 C.7x+5=11 D.-5+y=11
jolli1 [7]
7x+y=11 where y= -5                                                                                              So, when we substitute y in the equation then,
7x + (-5) = 11 that is 7x - 5 = 11....
So, B. is the right answer.

3 0
3 years ago
A 45 foot ladder is leaning against a building. If the bottom of the ladder is 27 feet from the base of the building, how tall i
taurus [48]

Answer:

The height of building to the nearest foot is h = 36 foot

Step-by-step explanation:

We have given,

Length of ladder leaning against a building, l = 45 foot

Bottom length between ladder and the building , b = 27

Now, we need to find the height of building to the nearest foot.

Let the height of building be h.

Using Pythagoras theorem,

l^{2} = b^{2} +h^{2}

Here, l = 45 , b = 27 and h =?

So,

45^{2} = 27^{2} +h^{2}

h² = 45² - 27²

h = √(45² - 27²)

h = 36

The height of building to the nearest foot is h = 36 foot

8 0
3 years ago
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