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4 years ago

What statement defines the two quantities that are measured to find the rate at which an airplane descends?

1 answer:

3 0

Which statement best defines the two quantities that are measured to find the rate at which an airplane descends ... The quantity of time measured in minutes depends on the quantity ofspeed measured in feet. ... The quantity of distance measured in feet depends on the quantity of time measured in minutes ...

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HELP PLEASE!! What is the constant of proportionality in the relationship?

anastassius [24]

Answer:3/2

Step-by-step explanation:

6÷2=3

9÷3=2

8 0

4 years ago

If JK=20-x^2, KL=2-x, and JL=10 find x

kherson [118]

$|JK|=20-x^2;\ |KL|=2-x;\ |JL|=10\\D:20-x^2 > 0\ and\ 2-x > 0\ and\ 20-x^2 < 10\ and\ 2-x < 10\\x\in(-\sqrt{20};\ \sqrt{20})\ and\ x < 2\ and\\x\in(-\infty; -\sqrt{10})\ \cup\ (\sqrt{10};\ \infty)\ and\ x >-8\\\\x\in(-\sqrt{20};-\sqrt{10})\\\\|JL|=|JK|+|KL|\\\\20-x^2+2-x=10\\\\-x^2-x+22=10\ \ \ \ \ |subrtact\ 10\ from\ both\ sides\\\\-x^2-x+12=0\\\\-(x^2+x-12)=0\\\\x^2+x-12=0\\\\x^2+4x-3x-12=0\\\\x(x+4)-3(x+4)=0\\\\(x+4)(x-3)=0\iff x+4=0\ or\ x-3=0\\\\x=-4\in D\ or\ x=3\notin D\\\\Answer:\boxed{x=-4}$

6 0

3 years ago

The hypotenuse of the right triangle is 5 meter long. the shorter leg is 1 Meter shorter than the longer leg. find the side leng

Firlakuza [10]

Shorter leg = x

Longer leg = x +1

Length of the hypotenuse: 5 m

We can use the pythagorean theorem with the information given. Doing so, we have:

$\begin{gathered} a^2+b^2=c^2 \\ (x)^2+(x+1)^2=5^2\text{ (Replacing the values)} \\ x^2+x^2+2x+1=25\text{ (Raising both terms to the power of 2)} \\ x^2+x^2+2x=25-1\text{ (Subtracting 1 from both sides of the equation)} \\ 2x^2+2x=24\text{ (Adding like terms)} \\ 2x^2+2x\text{ }-24=0\text{ (Subtracting 24 from both sides of the equation)} \\ 2(x+4)(x-3)=0\text{ (Factoring)} \\ x1=-4\text{ (Since x=-4 makes the factor (x+4) equal to 0)} \\ x2=3\text{ (Since x=3 makes the factor (x}-3\text{) equal to 0)} \\ \text{ Since we need a positive solution x would be equal to 3} \end{gathered}$

So, the answers would be:

Shorter leg = 3 m

Longer leg = 4 m

Length of the hypotenuse: 5 m

6 0

1 year ago

What is the mean? $5.25, $3.50, $4.50, $4.00 , $3.50

san4es73 [151]

Answer:

The answer to your question is: $4.15

Step-by-step explanation:

To find the mean we just have to sum all the values and divide them by the number of data.

mean = (5.25 + 3.50 + 4.50 + 4.00 + 3.50) / 5

mean = 20.75/5

mean = $ 4.15

7 0

4 years ago

Here are recipes for two mixtures of salt and water that taste different.

Roman55 [17]

Answer: The answer is 2 more teaspoons. 7 more teaspoons. Mixture B would use more salt,3 more teaspoons.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers