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2 years ago

Need help!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Leni [432]2 years ago

8 0

Answer:

145,7

Step-by-step explanation:

The area of the circle is 2πr

The area of the rectangle is b·h

Applied to this figure is:

2·π·r = 2·3,14·5 = 31,4 this is a semicircle so you have to divide by 2. 31,4/2 = 15,7

b·h = 13·10 = 130 (you can know the high because the double of the radio is the diameter)

130 + 15,7 = 145,7

ss7ja [257]2 years ago

4 0

Answer:

103.8 units^2

Step-by-step explanation:

rectangle:

13*5=65

semi-circle:

5*5*3.1=77.5

77.5/2=38.75

38.75+65=103.75 units^2

round to 103.8

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Hewo helppT-T pwease :3 2/5+____= 11/15

ArbitrLikvidat [17]

Answer:

1/3 is the answer

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

The researcher has limited resources. He sends 9 emails from a Latino name, and 14 emails from a non-Latino name. For the Latino

deff fn [24]

Answer: 38.41 minutes

Step-by-step explanation:

The standard error for the difference in means is given by :-

$SE.=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma^2_2}{n_2}}$

where , $\sigma_1$ = Standard deviation for sample 1.

$n_1$ = Size of sample 1.

$\sigma_2$ = Standard deviation for sample 2.

$n_2$ = Size of sample 2.

Let the sample of Latino name is first and non -Latino is second.

As per given , we have

$\sigma_1=82$

$n_1=9$

$\sigma_2=101$

$n_2=14$

The standard error for the difference in means will be :

$SE.=\sqrt{\dfrac{(82)^2}{9}+\dfrac{(101)^2}{14}}$

$SE.=\sqrt{\dfrac{6724}{9}+\dfrac{10201}{14}}$

$SE.=\sqrt{747.111111111+728.642857143}$

$SE.=\sqrt{1475.75396825}=38.4155433158\approx38.41$

Hence, the standard error for the difference in means =38.41 minutes

3 0

2 years ago

Can someone help me with these 2

frosja888 [35]

Answer:

Step-by-step Yes it is, assuming we decide to use the Pythagorean Theorem to find the hypotenuse (10) it'll be possible considering the formula is c²=√a²+b²

(c being the longest side of the triangle)

a= 6 and b= 8

c² =√6² + 8²

c² = √100 square root of 100 equals 10

c= 10p explanation:

4 0

3 years ago

Need answer ASAP giving points

dalvyx [7]

Answer:

$- \frac{11}{12}$

Step-by-step explanation:

$\frac{ \frac{5}{8} + \frac{3}{4} }{ \frac{ - 2}{3} - \frac{5}{6} } = \frac{ \frac{5}{8} + \frac{6}{8} }{ \frac{ - 4}{6} - \frac{5}{6} } \\ \\ = \frac{ \frac{5 + 6}{8} }{ \frac{ - 4 - 5}{6} } \\ \\ = \frac{ \frac{11}{8} }{ - \frac{9}{6} } \\ \\ = \frac{11}{8} \div ( - \frac{9}{6} ) \\ \\ = \frac{11}{8} \times ( - \frac{6}{9} ) \\ \\ = \frac{11}{8} \times ( - \frac{2}{3} ) \\ \\ = \frac{11}{4} \times ( - \frac{1}{3} ) \\ \\ = - \frac{11}{12}$