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Orlov [11]
2 years ago
9

Hello I need help in this​

Mathematics
1 answer:
maw [93]2 years ago
5 0
There are 22 books total on the shelf and 9 of them are biographical books so the probability is 9/22
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Alicia, Quentin, and Rosalyn are siblings. Alicia is the oldest sibling. Quentin is four years younger than Alicia. Rosalyn is t
tatiyna

Answer:

Alicia is 18years

Quentin is 14years

Rosalyn is 16years

Step-by-step explanation:

Let the age of Alicia be x

Let the age of Quentin be y

Let the age of Rosalyn be z

If the sum of the siblings’ ages, in years, is 48 then;

x+y+z = 48.... 1

If Rosalyn is two years older than Quentin then;

z =y+2 ..... 2

Also if Quentin is four years younger than Alicia then;

y = x-4 ... 3

From 3:

x = y+4 ... 4

Substitute 2 and 4 into 1 to have:

y+4+y+y+2 = 48

3y + 6= 48

3y = 48-6

3y= 42

y = 14

Since x= y+4

x = 14+4

x = 18

Since z = y+2

z = 14+2

z = 16year

This means that;

Alicia is 18years

Quentin is 14years

Rosalyn is 16years

6 0
2 years ago
A website has a 826,140 hits last month what is the value of the 8 in 826,140
guapka [62]
The value of 8 is in the hundred thousands

hope this helps
5 0
3 years ago
I need some help with my homework so may someone help me not in a rush just need this done
Paladinen [302]

Answer:

-25

Step-by-step explanation:

First he bought 3 tires which total costed 105, then returned 2, so he got $70 back, meaning he had $35. Then he found 2 $20 bills, which raised his total to $75. Then, he bought a phone for $90, so he has -25 dollars left

6 0
2 years ago
The diameter of a circle is 10 units.<br> What is the radius of the circle?
Mekhanik [1.2K]

Answer:

Radius = 5 units

Step-by-step explanation:

Diameter of a circle = 10

Radius = diameter/2

Radius = 10/2

Radius = 5 units

5 0
3 years ago
Read 2 more answers
Which fraction is close to, but less than 1/2?
qwelly [4]

Answer:

1/9, 2/9, 3/9, 4/9, 1/8, 2/8, 3/8, 1/7, 2/7, 3/7, 1/6, 2/6, 1/5, 2/5, 1/4, 1/3.

Step-by-step explanation:

hope this helps,

8 0
3 years ago
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