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3 years ago

Due at 12:00 Help me please!!!!!!!!! Show the work if you can

Mathematics

2 answers:

Vinil7 [7]3 years ago

7 0

Answer:

Question 9: A. 27/2

Question 10: A. 9/2

Step-by-step explanation:

I believe Silem2020 is correct, I Checked on paper.

solmaris [256]3 years ago

3 0

Answer:

Q#9: A 27/2

Q#10: A 9/2

Step-by-step explanation:

these triangles are similar so we have to take the ratios:

8/(12+8)=8/20

8/20=9/(9+x)

8*(9+x)=20*9

72 +8x=180

108=8x

x=27/2

6/10=x/(12-x)

6(12-x)=10x

72-6x=10x

72=16x

x=9/2

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The probability that a high school student in in the marching band is 0.47. The probability that a student plays a varsity sport

IrinaK [193]

The probability that a high school student in in the marching band is 0.47

so, $P(M)=0.47$

The probability that a student plays a varsity sport is 0.32

so, $P(V)=0.32$

the probability that a student is in the marching band and plays a varsity sport is 0.24

so, we get

P(M∩V)=0.24

a student plays a varsity sport if we know she is in the marching band

so,

P(V|M)=(P(V∩M))/(P(M))

now, we can plug values

and we get

$P(V|M)=\frac{0.24}{0.47}$

$P(V|M)=0.51063$

So,

the probability that a student plays a varsity sport if we know she is in the marching band is 0.51063......Answer

8 0

3 years ago

Read 2 more answers

There are 6 math classes in 8th grade. 5 are equally sized and the 6th class has 32 students. If there are a total of 202 studen

butalik [34]

Answer:

34+34+34+34+34=202 there u go!

5 0

1 year ago

You go shopping at a local department store with your friend and cousin. You buy one pair of jeans, four pairs of shorts, and tw

VashaNatasha [74]

Answer: Cost per pair of jeans = $ 20

Cost per pair of shorts = $12

Cost per shirt = $8

Step-by-step explanation:

Let x= cost per pair of jeans

y = Cost per pair of shorts

z= cost per shirt.

For you, total cost = x+4y+2z= 84

For your friend, total cost = 2x+y+3z=76

For cousin, total cost = x+2y+z= 52

Required system:

$x+4y+2z=84\ (i)\\ 2x+y+3z=76\ (ii)\\ x+2y+z=52\ (iii)$

from (i), $x=84-4y-2z$ (*)

put this in (ii) and (iii) we get

$2\left(84-4y-2z\right)+y+3z=76\\\Rightarrow\ -7y-z+168=76\ (iv)\\\\ 84-4y-2z+2y+z=52\\\Rightarrow\ -2y-z+84=52 \ (v)$

from (iv), $y=-\frac{z-92}{7}\ (vi)$

$\mathrm{Subsititute\:}y=-\frac{z-92}{7}\ \text{in}\ (v)$

$-2\left(-\frac{z-92}{7}\right)-z+84=52\\\\\Rightarrow\ -2\left(-\frac{z-92}{7}\right)-z=-32\\\\\Rightarrow\ -\frac{5z}{7}-\frac{184}{7}=-32\\\\\Rightarrow\ -5z-184=-224\\\\\Rightarrow\ -5z=-40\\\\\Rightarrow\ z=8$

$\mathrm{Subsititute\:}z=8\text{ in (vi)}$

$y=-\frac{8-92}{7}\\\\\Rightarrow \ y=12$

$\mathrm{Subsititute\:}z=8,\:y=12\text{ in (*)}$

$x=84-4\cdot \:12-2\cdot \:8\\\\\Rightarrow\ x= 20$

Hence, x= 20, y= 12 , z=8

So, Cost per pair of jeans = $ 20

Cost per pair of shorts = $12

Cost per shirt = $8

7 0

3 years ago

Is 12.14 bigger than 12.44

RideAnS [48]

No 12.14 is not bigger than 12.44

12.14 < 12.44

5 0

4 years ago

Read 2 more answers

Read the paragraph carefully. Look at the list of animals below the paragraph. Decide whether each

rodikova [14]

Answer: 34

Step-by-step explanation:

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4 years ago