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Naily [24]
2 years ago
10

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

ng that is 22 meters high with one of the radios and stands directly above the building’s entrance. Donna walks out of the entrance, perpendicular to the building, with the other radio. If Donna is more than 50 meters from the entrance, the connection between the radios breaks. What is the range of communication for the two radios to the nearest meter?
Mathematics
1 answer:
Strike441 [17]2 years ago
6 0
The range of communication is about 55 meters.
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Which of the following is an equation of a line that is parallel to y = 4 x + 9 ? (Choose all correct equations.)
babymother [125]

Answer:

The second, third and fourth are parallel to the given equation

Step-by-step explanation:

In order to determine if the slopes are the same, put all of the equations in slope-intercept form:  y = mx + b.  In order for lines in this form to be parallel, the m values of each have to be the exact same number, in our case, 4.  Equation 2 has a 4 in the m position, just like the given, so that one is easy.  Equation 2 is parallel.

Let's solve the third equation for y:

12x - 3y = 6 so

-3y = -12x + 6 and

y = 4x - 2.  Equation 3 is parallel since there is a 4 in the m position.

Let's solve the fourth equation for y:

-20x + 5y = 45 so

5y = 20x + 45 and

y = 4x + 9.  Equation 4 is also parallel since there is a 4 in the m position.

6 0
3 years ago
Solve and plot your answer on the number line below: 7.08 + 2x=15.96
NemiM [27]
7.08 + 2x =15.96
-7.08. -7.08
-------------------------
2x=8.88 divide each by 2

X=4.44
You would plot it in between 4 and 5 but on one of the line marks depending on what there value are
6 0
3 years ago
If r = 18 and t = 6, what is the value of the following expression?<br> r + 42 ÷ t · 5
AleksAgata [21]

Answer:

53

Step-by-step explanation:

42/6=7

7*5=35

18+35=53

4 0
3 years ago
A doctor told his patient to drink 3 full cups and 1/2 of a cup of medicine over a week.
Nadya [2.5K]

Answer:

<u>The patient is going to drink 14 pints of medicine over a week</u>

Step-by-step explanation:

1. Let's review all the information provided to answer the question correctly:

Amount of medicine the doctor told his patient to drink over a week = 3 1/2 cups

1 full cup = 4 pints

2. How much is the patient going to drink over the week?

For answering this question, we multiply this way:

3 1/2 = 3.5

3.5 * 4 = 14

<u>The patient is going to drink 14 pints of medicine over a week</u>

8 0
3 years ago
Find the missing length of the triangle b 0.3 cm 0.5 cm​
Juli2301 [7.4K]

Answer:

I'm assuming that it is a right angle triangle.

Step-by-step explanation:

0.3x0.5=0.15

0.15/2=0.075

missing length is 0.075

6 0
2 years ago
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