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2 years ago

A high speed train travels a distance of 503 km in 3 hours.

Mathematics

1 answer:

Marta_Voda [28]2 years ago

4 0

Step-by-step explanation:

it's is 2.8 km if we round to one decimal place

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2. what value of b makes the following equation true

Svetradugi [14.3K]

Answer:

2. 10

3. D. 1 for all n

Step-by-step explanation:

2. The applicable rules of exponents are ...

(a^b)(a^c) = a^(b+c)

a^b = 1/a^-b

$\dfrac{4^8}{(4^2)^{-3}}\div 4^4=\dfrac{4^8}{4^{-6}\cdot4^4}=\dfrac{4^8}{4^{-2}}\\\\=4^8\cdot4^2=4^{10}$

The value of n is 10.

3. Using the above rules of exponents, the expression simplifies to ...

6^(-n+n) = 6^0 = 1

The value is 1 for any n.

4 0

2 years ago

Scientists researching amphibians put tags on 30 frogs in a wetland area. Later, the scientists captured 520 frogs, of which 12

aleksklad [387]

Answer:

I THINK THE ANSWER IS d or e

5 0

3 years ago

Solve for x (x/r)+(x/w)+(x/t)= 1

MissTica

x/r + x/w + x/t = 1

x (1/r + 1/w + 1/t) = 1

x = 1 / (1/r + 1/w + 1/t)

To make the solution a bit cleaner, multiply through the numerator and denominator by the LCM of each fraction's denominator, rwt :

x = 1 / (1/r + 1/w + 1/t) • rwt / rwt

x = rwt / (rwt/r + rwt/w + rwt/t)

x = rwt / (wt + rt + rw)

5 0

3 years ago

F'(x + h) - f(x) f(x) = 5 x + 7 + 3

weqwewe [10]

Answer:

X=4

Step-by-step explanation:

i Think

7 0

2 years ago

Please help i give brainliest worth 30 points

soldier1979 [14.2K]

Answer:

4x^2

hope it helps

6 0

2 years ago

Read 2 more answers