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aleksandrvk [35]
2 years ago
13

Find the Area of the Circle.

Mathematics
1 answer:
Sergio [31]2 years ago
5 0
200.96
(A=pi*r^2)
It’s right just trust me.
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The units of the subway map below are in miles. Suppose the routes between stations are straight. Station​ G, not shown on the​
slega [8]

Answer:

8.60 miles

Step-by-step explanation:

If S=station​ G, not shown on the​ map, is 5 miles east and 7 miles south of Station A, the approximate distance between Station E and Station G when traveling by​ subway will be gotten using the Pythagoras theorem.

EG² = 5²+7²

EG² = 25+49

EG² = 74

EG = √74

EG = 8.60 miles

<em>Hence the approximate distance between Station E and Station G when traveling by​ subway is 8.60miles</em>

7 0
3 years ago
A veterinarian collects data on the number of times race horses are raced during their careers. The veterinarian finds that the
SpyIntel [72]

Answer:

c. (12.12, 18.48)

Step-by-step explanation:

Hello!

The study variable is X: number of times a racehorse is raced during its career.

The average number is X[bar]= 15.3 and the standard deviation is S= 6.8 obtained from a sample of n=20 horses.

To estimate the population mean you need that the variable has a normal distribution, in this case, we have no information about its distribution so I'll assume that it has a normal distribution. With n=20 the most accurate statistic to use for the estimation is a Students-t for one sample, the formula for the interval is:

X[bar] ± t_{n-1;1-\alpha /2} * \frac{S}{\sqrt{20} }

t_{n-1;1-\alpha /2} = t_{19;0.975}= 2.093

[15.3 ± 2.093 * \frac{6.8}{\sqrt{20} }]

[12.12; 18.48]

Using a significance level of 95% you'd expect that the true average of times racehorses are raced during their career is included in the interval [12.12; 18.48].

I hope it helps!

8 0
3 years ago
One leg of a 45°-45°-90° triangle measures 9sqrt2 inches. What is the length of the hypotenuse?
stiv31 [10]
We know that
a=9√2
b=9√2
a=b---------- <span>for having both angles of 45</span>
c²=a²+b²-------> (9√2)²+(9√2)²------>(324)-----------> c=√324=18


the answer is the option A 18 inches
8 0
3 years ago
The height of a trapezoid is 16in. The bases are 32in and 24in. What is the area of the trapezoid.
oksano4ka [1.4K]

Answer:

448in^2

Step-by-step explanation:

The area of a trapezoid is the bases added divided by two times the height.

(32+24)/2*16=28*16=448 in^2

4 0
3 years ago
If four pounds of a certain candy cost $10 how many pounds of that candy can be purchased for $12
Mama L [17]
4.8 pounds, set it up as 4 over 10 times x over 12, to find x multiply 4 by 12, and divide by ten. The result is 4.8
3 0
3 years ago
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