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inessss [21]
2 years ago
9

Juan is 8 years older than his sister. In 3 years, he will be twice as old as she will be then. How old

Mathematics
1 answer:
Ratling [72]2 years ago
7 0
Juan is 13 years old and his sister is 5 years old.
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Help please need it fast
inysia [295]
I’m pretty sure the correct answer is B
5 0
2 years ago
Write 31/11 as a decimal. If necessary, use a bar to indicate with digit or group of digits repeats
Andrews [41]

Answer:

2.81

Step-by-step explanation:

.81 has a bar over it.

5 0
3 years ago
Sydney has 3 3/5 yards of ribbon to make bows. Each bow is made from a piece of ribbon that is 2/5. How many bows can Sydney mak
Zielflug [23.3K]

Answer:

9

Step-by-step explanation:

2/5 x 2 = 4/5

4/5 x 2, or 2/5 x 4 = 1 3/5

1 3/5 x 2, or 2/5 x 8 = 3 1/5

3 1/5 + 2/5, or 2/5 x 9 = 3 3/5

8 0
2 years ago
In a talent show of singing and comedy acts, singing acts are 4.5 minutes long and comedy acts are 3.5 minutes long. The show ha
Alik [6]

Step-by-step explanation:

Let the number of singing act be x

Let the number of comedy act be y

If the total act is 14, then;

x+y = 14..... 1

If singing acts are 4.5 minutes long and comedy acts are 3.5 minutes long and the acts lasts 59 minutes, then:

4.5x + 3.5y = 59 .......... 2

Solve both equation simultaneously for x and y

x+y = 14

45x+35y = 590

.................................

x+y = 14......... *9

9x+7y = 118....... 1

...............................

9x+9y = 126

9x+7y = 118

Subtract both equations

9y-7y = 126-118

2y = 8

y = 8/2

y = 4

Substitute y = 4 into equation 1;

From 1: x+y = 14

x+4 = 14

x = 14-4

x =10

Hence there are 10 singing acts and 4 comedy acts in the show

7 0
3 years ago
Simplify (3x2-5x-6) - (5x2+4x+4)
Lisa [10]

Answer:

=−2x^2−9x−10

Step-by-step explanation:

would you like an explantion or are you good

8 0
2 years ago
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