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Talja [164]
3 years ago
7

NEED THIS DONE IMMEDIATLY. ONLY CORRECT ANSWERS. 10 POINTS AND ILL MARK BRAINLIEST. Points A and B are to be mapped onto a numbe

r line according to two equations. The solution to the equation 2/3a = -24 is the coordinate of point a. The solution to the equation 30 = -B/0.2 is the coordinate of point B.
A) solve the first equation to find the coordinat if point A. Show your work
B) solve the second equation to find the coordinate of point B. Show your work.
C) determine the distance between points A and B. Explain.
Mathematics
1 answer:
Wewaii [24]3 years ago
8 0
A) -24÷(2/3)=-24×(3/2)=-36
B) 30×0.2=6. 6÷-1=-6
C)-36-(-6)=30 units
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A car is leaving New York. After 30 minutes, the car is 25 miles from New York, and after 3 hours the car is 200 miles from New
xxTIMURxx [149]

Answer:

57.1428571429 miles per hour <em>Round off the answer to what your teacher asked.</em>

Step-by-step explanation:

Since we want final answer in miles per hour, lets change the 30 mins to 0.5 hours

Phase 1 =25miles per 0.5 hours

Phase 2 = (200miles-25miles) per 3 hours

Speed = distance/time

Average speed = total distance/ time

Total distance is 200miles because both phases say from new york that means it travels 25 miles away from new york then 3 hours later it is 200 miles away from new york

total time =3 hours+0.5 hours = 3.5 hours

Average speed = 200/3.5

Average speed = 57.1428571429 miles per hour

<em>Rate brainliest please</em>

8 0
3 years ago
A theater technician charges a $200 flat fee and 5% of all profits from ticket sales per show. If the technician made $400.00 on
ella [17]
The profit would be 5% of 400, or \frac{5}{100}*400=\frac{400}{20}=20, that is, $20 for profit! Not much, I suppose...
4 0
3 years ago
One watering system needs about three times as long to complete a job as another warning system when both systems operate at the
algol13

Answer:

One watering system requires 36 minutes to complete the job alone while another watering system requires 12 minutes to complete the job alone.

Step-by-step explanation:

Given:

Both the system can complete the job = 9 minutes

We need find the time required by each system to do the job.

Solution:

Let the time required by another watering system to complete the job be 'x' mins.

Now given:

One watering system needs about three times as long to complete a job as another watering system.

Time required by one watering system = 3x

Rate to complete the job by another watering system = \frac{1}{x}\ job/min

Rate to complete the job by One watering system = \frac{1}{3x}\ job/min

Rate at which both can complete the job = \frac{1}{9}\ job/min

So we can say that;

Rate at which both can complete the job is equal to sum of Rate to complete the job by another watering system and Rate to complete the job by One watering system.

framing in equation form we get;

\frac{1}{x}+\frac{1}{3x}=\frac19

Now taking LCM to make the denominator common we get;

\frac{1\times3}{x\times 3}+\frac{1\times1}{3x\times1}=\frac19\\\\\frac{3}{3x}+\frac{1}{3x}=\frac19\\\\\frac{3+1}{3x}=\frac{1}{9}\\\\\frac{4}{3x}=\frac{1}{9}

By Cross multiplication we get;

4\times9 =3x\\\\3x =36

Dividing both side by 3 we get;

\frac{3x}{3}=\frac{36}{3}\\\\x=12\ min

Time required by One watering system = 3x =3\times 12 =36\ min

Hence One watering system requires 36 minutes to complete the job alone while another watering system requires 12 minutes to complete the job alone.

6 0
3 years ago
I need to find the area of a semicircle with a radius of 2 units
MariettaO [177]

Answer:

6.2832 square units (rounded off to four decimal values)

Step-by-step explanation:

Area of a semicircle = \frac{1}{2} × π × r²

r (radius) = 2 units

For our semicircle the area = \frac{1}{2} × π × 2² = 6.28318530718  square units

Or 6.2832 square units (rounded off to four decimal values)

5 0
3 years ago
Using six random samples, the average number of catfish in the samples was 5.7. If the total population of fish in the pond is 2
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Using the proportion given, there will be 57 catfish in the pond.

The proportion given to us is
5.7/20 = x/200

Cross multiply:
5.7*200 = 20*x
1140 = 20x

Divide both sides by 20:
1140/20 = 20x/20
57 = x
5 0
3 years ago
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