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BartSMP [9]
2 years ago
13

Which equation is equivalent to..

Mathematics
1 answer:
svet-max [94.6K]2 years ago
6 0

Answer:

D

Step-by-step explanation:

1/3)^{x} = \frac{1}{3^{x} } = 3^{-x}

and

27^{x+2} = (3^{3})^{x+2} = 3^{3(x+2)} = 3^{3x+6}

Hence expression D is equivalent

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It took Joe 3 hours swimming at a speed of 12 miles per hour to swim along the Charles River. If Jennifer is swimming the same p
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Answer:

4 hours

Step-by-step explanation:

3 x 12 = 36

36/9 = 4

7 0
3 years ago
A radio arm saw has a circular cutting blade with a diameter of 10 inches and it spins at 2000rpm if there are 12 cutting teeth
FinnZ [79.3K]

Answer:

12565.11 teeth approximately cut cross the cutting surface per seconds.

Step-by-step explanation:

Since the diameter is 10inches, the circumference of the arm saw is 10π (circumference is πd where d is diameter).

The number of teeth on the cutting blade can be gotten by multiplying the diameter by 12 since we have 12 teeth per inch on the arm saw

Number of teeth on saw = 12 x 10π = 120π.

To get the number of teeth that cross the cutting surface in 2000rpm we multiple it by the total number of teeth in just one rpm.

So we have 2000 x 120π. But since we are asked to find it in revolution per seconds then 2000r/m = 2000r/60s ≈ 33.33

Therefore, we have

33.33 x 120π ≈ 12565.11 teeth

7 0
3 years ago
All of the following are examples of composite numbers except which one?
Nataly [62]
<span>All of the following are examples of composite numbers except which one?

2.</span>
5 0
3 years ago
FIND THE SLOPE <br> please explain me how to do it
natka813 [3]

Answer:

slope = - 1

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 4, 7) and (x₂, y₂ ) = (0, 3) ← 2 ordered pairs from the table

m = \frac{3-7}{0+4} = \frac{-4}{4} = - 1

5 0
3 years ago
Read 2 more answers
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Stels [109]

Answer:

A and D

Step-by-step explanation:

i took the quiz

6 0
3 years ago
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