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2 years ago

The chart below shows conversion between kilometers and miles.

Mathematics

1 answer:

lara31 [8.8K]2 years ago

3 0

Don’t touch my truck!!!…….

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HELPPPPPPOOOO SHOW WORKING ALSO THANKS

Akimi4 [234]

Answer:

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Step-by-step explanation: LOLLLLL POINTS FORLIFE

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2 years ago

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A 10-foot ladder leans against a wall so that it is 6 feet high at the top. The ladder is moved so that the base of the ladder t

konstantin123 [22]

Answer:

The top of the ladder is now at 10 ft.

Step-by-step explanation:

At the start, we have a height H=6, a length L=10 and a base B, that has to be calculated by the Pythagorean theorem:

$B^2=L^2-H^2=10^2-6^2=100-36=64\\\\B=\sqrt{64}=8$

The base is moved twice the distance the height moves up.

We called this distance x, so we have:

$L^2=(H+x)^2+(B-2x)^2=H^2+2Hx+x^2+B^2-4Bx+4x^2\\\\L^2=(H^2+B^2)+5x^2+(2H-4B)x\\\\L^2=L^2+5x^2+(2H-4B)x\\\\0=5x^2+(2H-4B)x\\\\5x+(2H-4B)=0\\\\x=\dfrac{4B-2H}{5}=\dfrac{4*8-2*6}{5}=\dfrac{32-12}{5}=\dfrac{20}{5}=4$

The new height (H+x) is

$H'=H+x=6+4=10$

The base travels 2x=8, so the new base B' is 0.

This means that the ladder is all against the wall (L=H').

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3 years ago

The half-life of a drug in the blood is 2 hours. Assume that a person starts with 0.6 mg of the drug in their system. Fill in th

sleet_krkn [62]

<span>If the half-life of the drug is 2 hours, then in 2 hours 0.6 mg of the drug becomes 0.3 mg. In two more hours (4 hours total) it is 0.15 mg, 2 more hours (6 hours) .075 mg. In two more hours (8 hours) it is .0375 mg, rounded to 0.04. The answer is 8 hours.</span>

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3 years ago

Is 2 1/7 not a rational number

sergiy2304 [10]

2 1/7 is a mixed number BUT it is also a rational number.

Turning this into a improper fraction, you'd get 15/7

15/7 = 2.14285...

Repeating decimals are rational numbers

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3 years ago

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Suppose you feel hungry so you reach for a plum you see in a fruit bowl. explain how both external and internal stimuli are invo

Licemer1 [7]

In the given scenario above, the one who will be named as the external stimulus is the action of having to use the sense of sight when you have seen the fruit of bowl. The internal stimulus will be the action of having to feel the hunger.

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3 years ago