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Bad White [126]
2 years ago
14

The formula for distance is given as distance = speed x time. Use the formula to find:

Mathematics
1 answer:
goldenfox [79]2 years ago
3 0
You just put the numbers in the formula 3x30 = 90 km
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An air balloon begins it's decent to the ground at 1000 ft above the ground and falls at a rate of 50 ft per minute. Select all
Radda [10]

Answer:

The correct options are 3, 4 and 5.

Step-by-step explanation:

It is given that an air balloon begins it's decent to the ground at 1000 ft above the ground and falls at a rate of 50 ft per minute.

It means the initial height of air balloon is 1000. So, the y-intercept is (0,1000).

The ball falls at a rate of 50 ft per minute. So, the rate of change is

m=-50

The height of balloon is defined as

h(x)=-50x+1000                      [\because y=mx+b]

Where, x is time in minutes.

The balloon will reach the ground when h(x)=0

0=-50x+1000

50x=1000

x=20

Therefore the options 3, 4 and 5 are correct.

4 0
3 years ago
A cubic yard is what kind of measurement?
lesantik [10]
Option C
Volume/Capacity
8 0
3 years ago
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Find the exact solution of -x2 +7x + 5 = 0 by using the Quadratic Formula.
jonny [76]

Answer:

The answer to your question is:

x 1 = -0.65

x2 = 7.65

Step-by-step explanation:

Equation              -x² + 7x + 5 = 0

a = -1

b = 7

c = 5

Quadratic formula     x = -b ±√(b² -4ac) / 2a

                                   x = - 7 ± √(7² -4(-1)(5) / 2(-1)

                                   x = -7 ± √(49 + 20) / -2

                                  x = -7 ± √69 / -2

                                   x = - 7 ± 8.3 / -2

               x1 = -7 + 8.3 / -2                         x2 = -7 -8.3 / -2

               x 1 = -0.65                                  x2 = 7.65

7 0
3 years ago
If csc B = b, which number below is not a possible value of b?
Andru [333]
We know that for all B:

\csc\text{B}\in(-\infty,-1]\cup[1,\infty)

So the answer is 0,5 (b.)
3 0
3 years ago
Read 2 more answers
Sin³xcosx+sinxcos³x=sinxcosx
Svetllana [295]

Answer:

Step-by-step explanation:

sin^3xcosx+sinxcos^3x\\=sinx cosx(sin^2x+cos^2x)\\=sinx ~cosx(1)\\=sin~x~cos~x

6 0
2 years ago
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