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3 years ago

A or B? Please show work!

Mathematics

1 answer:

Vilka [71]3 years ago

8 0

Answer:

Step-by-step explanation:

x/4=3/8 multiply both sides by 4

x=12/8 divide numerator and denominator by 4

x=3/2

x=1.5

x/8=1.5/2 multiply both sides by 8

x=12/2

x=6

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the difference between your school and house is 5 kilometers. on foot you get home in 25 minutes. if you rode your bike you can

Artyom0805 [142]

The speed while walking is 0.2 kilometers per minute

Step-by-step explanation:

The speed is calculated as distance per unit time.

Given

Distance = d = 5 km

Time by walking = t = 25 minutes

The speed is given by:

$s = \frac{d}{t}$

Putting the values

$s = \frac{5}{25}\\s= 0.2\ km/min$

The speed while walking is 0.2 kilometers per minute

Keywords: Speed, distance

Learn more about speed at:

#LearnwithBrainly

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4 years ago

(Please help a sister out)!

MrRissso [65]

Answer:

Distributive

Step-by-step explanation:

when you distribute 3 to x, 3y, and 5, you get 3x+9y+15, which is equivalent to the other expression when you simplify it

5 0

3 years ago

True or false To find the complement of an event (P(not A)), you solve 1-P(A).

PilotLPTM [1.2K]

Answer:

true

Step-by-step explanation:

7 0

3 years ago

What is the value of a in the expression 7 to the power of d = of 3 square root of 7?

Elina [12.6K]

The answer to what is the value of a in the expression 7 to the power of d = of 3 square root of 7 is a=19.

3 0

3 years ago

Plz help me, thank you

Kruka [31]

Answer:

$P=40(1.03526)^{t}$

Step-by-step explanation:

Exponential Growth

The natural growth of some magnitudes can be modeled by the equation:

$P=P_o(1+r)^{t}$

Where P is the actual amount of the magnitude, Po is its initial amount, r is the growth rate and t is the time.

The initial number of bacteria is Po=40 and it doubles (P=2Po) at t=20 min. With that point we can find the value of r:

$2P_o=P_o(1+r)^{20}$

Simplifying:

$(1+r)^{20}=2$

Solving for 1+r:

$1+r=\sqrt[20]{2}$

$1+r=1.03526$

The exponential function that models the situation is:

$\mathbf{P=40(1.03526)^{t}}$

4 0

3 years ago