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3 years ago

Pls help i give u brainliest and 5 stars

Mathematics

2 answers:

Harrizon [31]3 years ago

7 0

Answer:

1932.4816

Step-by-step explanation:

The formula for SA of a cube is 4πr² so half is 2πr² and sing the radius is 7 the answer is 1932.4816 cm²

Umnica [9.8K]3 years ago

3 0

Answer:

Step-by-step explanation:

Diameter = 14 cm

r = 14/2 = 7 cm

Outer surface area of hemisphere =2πr²

= 2π*7*7

= 98π cm²

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Do number 7 and 8 please

Kruka [31]

7) $\sqrt[3]{64} = \sqrt[3]{4^3} = 4$

8) $\sqrt[3]{216} = \sqrt[3]{6^3} = 6$

5 0

3 years ago

A scientist who studies sleep has developed a new technique to help people sleep each night. He

Andru [333]

Considering the situation described, the scientist's null and alternative hypothesis are described by:

Null hypothesis $H_0: \mu = 0$ ; Alternative hypothesis $H_1: \mu \neq 0$ .

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is no difference, that is, the difference of the means represented by $\mu$ is of 0, hence:

$H_0: \mu = 0$

At the alternative hypothesis, it is tested if there is a difference, hence:

$H_1: \mu \neq 0$

More can be learned about an hypothesis test at brainly.com/question/26454209

7 0

2 years ago

Pls I need help now pls help me

VARVARA [1.3K]

1. yes

2. yes

3. no

4. yes

5. yes

7 0

2 years ago

Read 2 more answers

I am thinking of three numbers. The second number is 5 times the first. The third number is

Fed [463]

Answer:

3, 15, 14

Step-by-step explanation:

x + 5x + ( 5x -1) = 32

11x - 1 = 32

11x = 32 + 1

11x = 33

11x/11 = 33/11

x = 3

therefore

the first number is 3

the second is 5 × 3 = 15

the third number is 15 - 1 = 14

4 0

2 years ago

lettuce is packaged four bags to box.if there are 3.5 boxes of lettuce in the cooler, how many bags of lettuce would there be

yuradex [85]

4 x 3.5 = 14 bags of lettuce

7 0

3 years ago

Pls help i give u brainliest and 5 stars ​

Pls help i give u brainliest and 5 stars