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Advocard [28]
2 years ago
6

What are the answer 1/7 of 21

Mathematics
1 answer:
HACTEHA [7]2 years ago
8 0

Answer:

The answer is 3.

Step-by-step explanation:

1/7(21)= 3

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Rachel babysits the Michaelson’s kids on Saturdays for 4 hours and is paid $12.50 per hour. On Sundays, she babysits at the Smit
NeTakaya

Answer:

She earns $8.00 more on Sunday

Step-by-step explanation:

Saturday 12.50x4=50.00

Sunday 14.50x4=58.00

5 0
3 years ago
Find the altitude of an equilateral triangle whose perimeter is 18
Rainbow [258]

Answer:

3√3 units

Step-by-step explanation:

We are asked to find the altitude of the equilateral triangle whose perimeter is 18 . Firstly let us find the side of the∆.

\rm \implies a + a + a = 18 \\\\\rm\implies 3a = 18  \\\\\rm\implies a = 6

Now we know that in a equilateral triangle , the altitude of the triangle with side length a is ,

\rm\implies Altitude =\dfrac{\sqrt3}{2} a

Plug in the value of a that is 6 , we will get ,

\rm\implies Altitude =\dfrac{\sqrt 3}{2} a  \\\\\rm\implies Altitude =\dfrac{ \sqrt3}{2}\times 6  \\\\\rm\implies Altitude = \sqrt3 \times 3  \\\\\rm\implies\boxed{ \bf Altitude = 3\sqrt3 \ units }

5 0
2 years ago
4 increased by three-fifths of a number is 49. What is the number?
aleksklad [387]

Answer:

75

Step-by-step explanation:

Let n be the unknown number

  1. 4+3/5n=49
  2. Isolate variable- 3/5n=45
  3. Multiply by 5/3- n=75
7 0
3 years ago
Read 2 more answers
A rectangular bathroom floor is covered with square tiles that are 1 1/2 feet by 1 1/2 feet. The length of the bathroom floor is
kenny6666 [7]

Answer:

The number of square tiles required to cover the bathroom floor is approximately 31.

Step-by-step explanation:

The dimensions of the rectangular floor of the bathroom are:

Length = 10.5 ft.

Breadth = 6.5 ft.

The dimensions of the square tiles are:

Side = 1.5 ft.

The area of the rectangular floor of the bathroom is:

Area\ of Bathroom\ floor=Length\times Breadth\\=10.5\times6.5\\=68.25

The area of 1 square tile:

Area\ of\ 1\ square\ tile=(SIde)^{2}\\=(1.5)^{2}\\=2.25

The number of tiles required to cover the bathroom floor is:

Number\ of\ tiles=\frac{Area\ of\ bathroom\ floor}{Area\ of\ 1\ square\ tile} \\=\frac{68.25}{2.25}\\ =30.3333\\\approx31

Thus, the number of square tiles required to cover the bathroom floor is approximately 31.

6 0
3 years ago
I need help on the following questions please wait for me to upload them. It keeps deleting my file help
Hitman42 [59]
Going down the list.

3.) 5 gal.
4.)40,000 mL
5.)8 pt
6.)0.3 kL
7.)16.5 qt, 66 pt
8.)0.29 daL
9.)64 fl oz
10.)777,000 cL (looked like 7.7)
11.)1.5 pt, 2.9 (3) c.
8 0
3 years ago
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