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4 years ago

HELP ME RIGHT NOW PLEASE!!!!!!!

Mathematics

1 answer:

IRINA_888 [86]4 years ago

5 0

(9*2)+(x*2)=48
18+2x=48
2x=30
x=15

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Find the missing side length CAN SOMEONE PLEASE HELP ME? PLEASEEEEE!!!

Ganezh [65]

Answer:

13.31803792

Step-by-step explanation:

Law of Cosines

a= 8

b= 18

c= ?

$c^2=a^2b^2-2ab*cos(c)$

$c^2=8^2-18^2-2*8*18*cos(43)$

c = 64 + 324 - 2 * 8 * 18 * cos(43)

cos(43) = 0.7313537016

Order of Operations

64 + 324 - 2 * 8 * 18 * 0.7313537016 = 177.3701339

Square Root the answer

$\sqrt{177.3701339}$ = 13.31803792

4 0

3 years ago

Read 2 more answers

A new restaurant specializes in making pizza cones. A large slice of pizza is made into a cone shape and then filled with cheese

olasank [31]

Answer:

4.7 in

half of 3 in is 1.5 so

1.5 × 3.14 = 4.7

7 0

4 years ago

Calculate the shaded area. Give your answer to 3 significant figures.

jasenka [17]

$A=A_{big}-A_{small}$
$A=\pi R^2-\pi r^2$
$A=\pi(R^2-r^2)$
$A=\pi(6.5^2-2.3^2)$
$A=\pi(42.25-5.29)$
$A=\pi(36.96)\approx116cm^2$

6 0

4 years ago

Please Help! A group of tourists can be sorted into tour boats in groups of 4 or in groups of 6. In either case, there are no em

ozzi

Answer:

36 is the correct answer.

Step-by-step explanation:

It is given that there are a group of tourists that can be sorted in a group of either 4 or 6 so that there are no empty seats.

It means that the total number of seats should be a multiple of both 4 and 6.

For finding such a number we can simply find out LCM (Least Common Multiple) of 4 and 6.

LCM of two numbers p and q is the minimum number which can be completely divided by both the numbers p and q.

Let us find the LCM of 4 and 6 here, using the factors:

4 = 2 $\times$ 2

6 = 2 $\times$ 3

The common factor(shown as underlined) is used only once in the LCM.

So, LCM = 2 $\times$ 2 $\times$ 3 = 12

So, 12 is the minimum number which can be divided by 4 and 6 both.

But, we are given a condition that number of tourists are more than 25 and lesser than 45. So, the number of seats can be in between 25 and 45.

Now, let us see multiples of 12:

12, 24, 36, 48, 60, ......

The number that lies between 25 and 45 is 36.

So, the number of total seats can be 36.

5 0

4 years ago

Worker A finishes the job in 10 hours; worker B finishes it in 12 hours, and worker C finishes it in 15 hours.

nika2105 [10]

A=1/10, b=1/12, c=1/15 (these are the rates for each worker...)

1.)

2(1/10)+4(1/12)+t/15=1

1/5+1/3+t/15=1

(3+5+t)/15=1

3+5+t=15

8+t=15

t=7

So it would take c 7 hours to finish the job.

2.)

1/40-1/60

(3-2)/120

1/120

The drain rate is 1/60. So you will need to find t when the tank is empty, while starting at 2/3 capacity...

2/3-t/60=0

(40-t)/60=0

40-t=0

t=40

It would take 40 minutes to empty the tank when it is 2/3 full.

5 0

4 years ago