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cricket20 [7]
3 years ago
6

Help me with 1-8 please!

Mathematics
1 answer:
alexandr1967 [171]3 years ago
3 0
1) you do 144× 12 since you want to know how much all kids pay so its 1728 dollars.

2) they want 2 section a, 3 section b, and 2 section c, and sincc you want to know total you multiply number of tickets bought by cost per ticket, so its 2(10)+3(20)+2(30)=180 total cost.

3) sine they have 350 dollars yoy subtract cost of the ps4 from the amount they have and you get, 350-234=116 dollars remaining.


4) since they make 15 per lawn you write 15x, x representing number of lawns cut, and you set that equal to 225, so its 15x=225 then you divide 15 on both sides to get x= 15 lawns they need to cut.

5) you just divide 2/4 since they ate two of four slices and you get .5 then convert that to a decimal by moving decimal point 2 spaces over to get 50%.

6) Just add up all the costs of each song, so you get .99+1.19+1.5+.99 = 4.67 dollars as total cost.

7) since 60 min is in an hour and you have 30 min left over it would be 1hr and 30 min.

8) since its Monday through Friday which is only 5 days you multiply that by 4 weeks to get 20 days then you multiply by 30 since they study 30 min on each of those days, so you get 20×30 which is 600min of studying, but since it want is in hours divide 600 by 60 to get 10hrs of study.
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Answer:

im not 100 percent sure but i think its a

Step-by-step explanation:


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3 years ago
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Find the lateral area and surface area of a cone with radius of 5 and height 12 in
Aleksandr [31]
Lateral Area of a Cone = PI * radius * slant heightLateral Area= <span> <span> <span> 188.4955592154 square inches
</span></span></span>
<span><span> </span> </span> Total surface area = Lateral Area + Base AreaBase Area = PI * 25Base Area = <span> <span> <span> 78.5398163397
</span></span></span>Total Area  = <span> <span> 188.4955592154</span> + </span><span>78.5398163397
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Source:http://www.1728.org/volcone.htm


4 0
3 years ago
How many cm is 20 m?<br><br> A. 200<br> B. 2,000<br> C. 20,000
JulsSmile [24]
20 m = 2000 cm

B. 2,000
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Which of the following is the slope of the line?<br> Help ASAP PLZ
ANEK [815]

Answer: the second option is the correct answer

Step-by-step explanation:

Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis

change in the value of y = y2 - y1

Change in value of x = x2 -x1

y2 = final value of y

y 1 = initial value of y

x2 = final value of x

x1 = initial value of x

From the information on the graph y2 = - 1

y1 = - 2

x2 = 4

x1 = 0

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The arc length of a sector is equal to four times the radius. Express the arc length s
Sveta_85 [38]

Answer:

Step-by-step explanation:

Given that,

The arc length is four times the radius

Let he radius be 'r'

Then, the arc length be 's'

The arc of a sector can be calculated using

s=θ/360 × 2πr

Then, given that s=4r

So, 4r = θ × 2πr / 360

Divide both side r

4 = θ × 2π/360

Then, make θ subject of formula

θ × 2π = 360 × 4

θ = 360 × 4 / 2π

θ = 720 / π

So, area of the sector can be determine using

A = θ / 360 × πr²

Since r = ¼s

Then,

A = (θ/360) × π × (¼s)²

A = (θ/360) × π × (s²/16)

A = θ × π × s² / 360 × 16

Since θ = 720 / π

A = (720/π) × π × s² / 360 × 16

A = 720 × π × s² / 360 × 16 × π

A = s² / 8

Then,

s² = 8A

Then,

s= √(8A)

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3 years ago
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