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tangare [24]
3 years ago
14

The diameter of a circle has endpoints whosever coordinates are R(-2,2) and S(4,2). find the center of the circle

Mathematics
1 answer:
lisov135 [29]3 years ago
3 0
Hello!

As you can see this line is horizontal. It is 6 units long. Therefore the center is three units in. Therefore the center of this circle is at (1,2).

I hope this helps!
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In a local city, the temperature at noon is -3C The temperature is expected to decrease by 2.5C each hour until the temperature
LiRa [457]

Writing the equation that governs this situation:


-3C - (2.5C/hr)x = -18C


Simplifying, -3 - 2.5x = -18, or 3 + 2.5x = 18


Combining like terms: 2.5x = 18-3 = 15


Then x = 15/2.5 = 6. The temp. will reach -18C after 6 hours.

7 0
3 years ago
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Three men working together can finish a house repair job in 10 days. How manydays will 5 men working at the same rate finish the
Vanyuwa [196]

Answer:

17 days

Step-by-step explanation:

Number of days in which 3 men can finish a house repair job = 10 days

Number of days in which 1 man can finish a house repair job = \frac{10}{3} days

Therefore,

Number of days in which 5 men can finish a house repair job = Number of days in which 1 man can finish a house repair job × 5

=\frac{10}{3}(5)=\frac{50}{3}=16.6 ≈ 17 days

5 0
2 years ago
Erika is working on solving the exponential equation 50x = 17; however, she is not quite sure where to start. Using complete sen
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

Divide both sides by 50 and you'll get x=17/50

If x is the exponent than we can take the natural log of both sides.

x(ln)50=ln(17)

Then divide ln50 on both sides

x=ln17/ln50= 0.72423228087

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2 years ago
Write an equation of the line in slope-intercept form.
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Answer:

Ex-

y=3x+7

^y=Mx+b form^

6 0
2 years ago
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11.1.21 A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the males​ surveyed, responded that they had
hram777 [196]

Complete question :

The Harris Poll conducted a survey in which they asked, "How many tattoos do you currently have on your body?" Of the 1205 males surveyed, 181 responded that they had at least one tattoo. Of the 1097 females surveyed, 143 responded that they had at least one tattoo. Construct a 95% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval.

Answer:

(−0.0085 ; 0.0481)

Step-by-step explanation:

Given that :

n1 = 1205 ; x1 = 181 ; n2 = 1097 ; x2 = 143 ; α = 95%

Zα/2 = 1.96 ( Z table)

Confidence interval : (p1 - p2) ± E

E =Zα/2 * √[(p1q1/n1) + (p2q2/n2)]

p1 = x1 /n1 =181/1205 = 0.1502

q1 = 1 - p1 = 1 -0.1502 = 0.8498

p2 = x2/n2 = 143/1097 = 0.1304

q2 = 1 - p2 = 1 -0.1304 = 0.8696

E = 1.96 * √(0.0001059 + 0.0001033)

E = 0.0283

p1 - p2 = 0.1502 - 0.1304 = 0.0198

Lower boundary = 0.0198 - 0.0283 = −0.0085

Upper boundary = 0.0198 + 0.0283 = 0.0481

(−0.0085 ; 0.0481)

7 0
3 years ago
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