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3 years ago

14

Pleaaaseeeee hellpppp I'm begging :(!!!!!!!! I nee an answer for number 12 pleaaaseee !! For brainlest and thanks :))

1 answer:

VladimirAG [237]3 years ago

6 0

31.25/5 = 6.25 per hour

50/8 =6.25 per hour

so 6.25 x 3 = 18.75 for 3 hours

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WORTH 8 POINTS<br>What is the area of a rectangle with side lengths of 6/8 meter and 4/ 10 meter?

miv72 [106K]

Answer:

3/10 (see picture for work)

<h2>Correction:</h2>

I meant to write down $a=l*h$ , not $a=b*w$ .

5 0

3 years ago

The diagram shows a sector of a circle radius 10cm

Yuki888 [10]

Answer:

$\text{Perimeter of sector = 43.6 (Rounded to the nearest tenth.)}$

Step-by-step explanation:

$\text{Perimeter of the sector = Radius + arc length + radius}$

$\text{Radius = 10 cm}$

$\text{Perimeter of the sector = 10 + arc length + 10 }$

$\text{Perimeter of the sector = 20 + arc length }$

$\text{arc length = (sector angle/ 360 ) * perimeter of the circle}$

$\text{Perimeter of a circle }=2\pi r$

$\text{sector angle} = 135$

$\text{arc length} = (135/ 360 ) * 2\pi (10)$

$= (3/8) 20\pi$

$= 15\pi /2$

$\text{Using }\pi =3.14$

$= 15 * 3.14 /2$

$= 23.55$

$\text{Perimeter of the sector = 20 + 23.55}$

$= 43.55$

$= 43.6 cm$

$\text{perimeter of the sector = 43.6 cm }$

8 0

2 years ago

Evaluate and show your steps.<br> a. 3.8 × 0.5 + 1.5 × 30

seraphim [82]

Start out with writing it

3.8 x 0.5+ 1.5 x 30

Multiply the numbers: 3.8 x 0.5 = 1.9

=1.9+30 x 1.5

Multiply the numbers: 1.5 x 30= 45

=1.9 +45

Add the numbers: 1.9 + 45=46.9

=46.9

8 0

4 years ago

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malfutka [58]

Add y to both sides then do the algebra

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3 years ago

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How many different elements are involved in the chemical reaction shown? *

dusya [7]

The elements you can see in the reaction are Calcium(Ca), Hydrogen(H), and Oxygen(O). So there are 3 elements in the chemical reaction.

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3 years ago