All categories

2 years ago

According to the table, how many people got 8 or more hours of sleep?

Mathematics

1 answer:

zalisa [80]2 years ago

4 0

I believe the answer is 17.

You might be interested in

Marsha is changing her phone

Nikitich [7]

month 4: 13.25*4=53. 53+50 = 103

month 4: 25.75*4 = 103

They both cost $103 on month 4

8 0

2 years ago

Debora [2.8K]

Answer:

Step-by-step explanation:

7 0

2 years ago

The figure shows two semicircles with centers K & M. The semicircles are tangent to each other at point J, and (QN) ⃗ is tan

kodGreya [7K]

Answer: OQ = 34

Step-by-step explanation:

Please find the attached files for the solution

8 0

2 years ago

Need help finding the area of the shaded region. Round to the nearest tenth. Need help ASAP

Sergio [31]

Answer: 294.4 m²

<u>Step-by-step explanation:</u>

Separate the shaded region into two parts:

The section containing the central angle of 230° (360° - 130°)
The triangle with sides 11.1, 11.1 & 20.12 (use Law of Cosines)

$1.\ Area(A)=\pi\ r^2\ \bigg(\dfrac{\theta}{360}\bigg)\\\\\\.\qquad \qquad =\pi(11.1)^2\bigg(\dfrac{230}{360}\bigg)\\\\\\.\qquad \qquad =247.3$

$2.\ \text{Use Law of cosines to find the length of the third side.}\\\text{ Then use Heron's formula to find the Area of the triangle.}\\\\s=\dfrac{11.1+11.1+20.12}{2}=21.16\\\\\\A=\sqrt{s(s-a)(s-b)(s-c)}\\\\.\ =\sqrt{21.16(21.16-11.1)(21.16-11.1)(21.16-20.12)}\\\\.\ =\sqrt{2227}\\\\.\ =47.1$

Area of shaded region = Area of (1) + Area of (2)

= 247.3 + 47.1

= 294.4

8 0

3 years ago

Read 2 more answers

Find the area of a circle whose radius is 12 in. Round to the nearest tenth

irina1246 [14]

Area of a circle = pi r^2 = pi * 12^2 = 452.4 in^2 to nearest tenth.

6 0

2 years ago

Read 2 more answers