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Elena L [17]
3 years ago
8

What value of r makes the equation true?

Mathematics
1 answer:
Svet_ta [14]3 years ago
7 0
R would have to be equal to 0.08 in order for it to be true. 
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Lyra and Donna are testing the two-way radios they built for their high school science project. Lyra goes to the top of a buildi
9966 [12]
They will be forming a right triangle. 

long leg is the height of Lyra. 22 meters high from the entrance.
short leg is the distance of Donna. 50 meters from the entrance.
We need to solve for the hypotenuse or the range of communication.

a² + b² = c²
22² + 50² = c²
484 + 2500 = c²
2,984 = c²
√2,984 = √c²
54.63 = c

The range of communication for the two radios is 55 meters.
8 0
3 years ago
Variable y varies directly with variable x, and y = 6 when x = 4.
worty [1.4K]
You need to plug K in and solve for K.
6=K4
6/4=K
you can reduce to 3/2=K
5 0
3 years ago
Simplify the expression<br> (-3+4k) - (-2+ 7k)
DedPeter [7]

Answer: −1−3k

Step-by-step explanation:

Distribute:

(−3+4k)−1(−2+7k)

(-3+4k)+{2-7k}

Eliminate redundant parentheses:

(−3+4k)+2−7k

-3+4k+2-7k

Add the numbers:

−3+4k+2−7k

−1+4k−7k

Add the same term to both sides of the equation:

−1+4k−7k

−1−3k

4 0
3 years ago
Which of the two nearest numbers to 19506<br> are divisible by 9?
emmasim [6.3K]

Answer:

I'm pretty sure it's 19,497 as the 1st nearest, and 19,515 as the 2nd

Because 19,506-9 is 19,497 and 19,506+9 is 19,515

4 0
3 years ago
Plz help me if you're nice. If wrong answer i'll report you
Anna [14]

Answer

z= 14

Step-by-step explanation:

4( 2z-3) -5(z-6) =3 *20

8z-12-5z+30=60

3z+18=60

3z=60-18

3z=42

z= 14

5 0
3 years ago
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