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julsineya [31]
3 years ago
5

Jill Grewe out her hair for several years to donate to charity when she was finally ready to have it cut she asked her mom to ta

ke off 10 2/3 inches she liked it short so much she got another one 7/8 inches cut off how much hair did Jill have to cut off in all

Mathematics
2 answers:
pashok25 [27]3 years ago
6 0
The answer is 12 13/24
alexira [117]3 years ago
4 0
I would add the 10 2/3 to the 1 7/8. To add the fractions, I need to find the least common denominator. It would be 24. so it'd be 10 16/24+ 1 21/24= 11 37/24. To make the 11 37/24 a proper mixed fraction, I see that the numerator is bigger than the denominator and that 24 can go into 37 one time. So I would add 1 to the 11 to get 12. Then I put the remainder over 24 which would be 13/24. I think your final answer would be 12 13/24 if I did this correctly. So she would have had 12 13/24 inches of hair cut off.
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The measure of the obtuse angle in the isosceles triangle is two and a half times the measure of one base angle. Write and solve
natta225 [31]
Let the base angle be x. If the obtuse angle is two and a half times the base angle, it will be 2.5x. In a triangle, all three angles will add up to 180. The third angle, the other base angle will be equal to x. So the equation will be:

x + x + 2.5x = 180
2x + 2.5x = 180
4.5x = 180
x = 40

If x = 40, then 2.5x = 100

8 0
3 years ago
A bag contains 6 red balls and 5 black balls . Two balls are picked , one after the other . Find the probability that :
Kaylis [27]

Answer:

<u>There are:</u>

  • 6 red balls - R
  • 5 black balls - B
  • Total number = 11 balls
<h3>A. Without replacement</h3>

i. <u>Two blacks </u>

  • P(BB) = 5/11*4/10 = 2/11

ii. <u>The first is black</u>

  • P(B) = 5/11

or, alternatively

  • P(BR or BB) = 5/11*6/10 + 2/11 = 3/11 + 2/11 = 5/11

iii. <u>Both are of same colour</u>

  • P(BB or RR) = 2/11 + 6/11*5/10 = 2/11 + 3/11 = 5/11
<h3>B. With replacement</h3>

i. <u>Two blacks </u>

  • P(BB) = 5/11*5/11 = 25/121

ii. <u>The first is black</u>

  • P(B) = 5/11

or alternatively

  • P(BR or BB) = 5/11*6/11 + 25/121 = 30/121 + 25/121 = 55/121 = 5/11

iii. <u>Both are of same colour</u>

  • P(BB or RR) = 5/11*5/11 + 6/11*6/11 = 25/121 + 36/121 = 61/121
7 0
3 years ago
The class voted on a reward. Those that voted to watch a movie out numbered those that voted for extra recess by a ratio of 6 to
Naddik [55]

Answer:

6

Step-by-step explanation:

6x(3)=18    (3)x2= 6

     |_____|

3 0
3 years ago
How do you substitute x+y=2 3x+2y=5
Monica [59]
Here's how you solve this.  So, x+y=2, right?  Let's isolate x.  x+y-y=2-y.  x=2-y.  NOW, if x=2-y, in 3x+2y=5, we can REPLACE x with 2-y and use it to solve for y!  3x+2y=5.  3(2-y)+2y=5.  (3*2)+(3*-y)+2y=5.  6+(-3y)+2y=5.  6+(-y)=5.  6+(-y)-6=5-6.  -y=-1.  -y/-1=-1/-1.  y=1.

So, if y=1, we can substitute that back into either equation--but let's go with the easier one, x+y=2.  x+1=2.  x+1-1=2-1.  x=1.  1+1=2, so that works; let's check the other equation.  3(1)+2(1)=5.  3+2=5.  5=5.  That's correct!

Answer: x=1, y=1
4 0
3 years ago
Read 2 more answers
Find the real solutions of e^3t=100
wel
E^3t=100

ln100=3t

t=(ln100)/3
4 0
3 years ago
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