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gayaneshka [121]
3 years ago
5

What number is half-way between thirteen and thirty-one

Mathematics
1 answer:
mars1129 [50]3 years ago
3 0

\frac{13 + 31}{2} = \frac{44}{2} = 21

Answer: 21

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Please solve this problem.
just olya [345]

x=number of oranges.

y=number of bananas.

$5

we can suggest this system of equations:

x+y=12

0.5x+0.25y=5

We can solve this system of equations by substitution method.

x=12-y

0.5(12-y)+0.25y=5

6-0.5y+0.25y=5

-0.25y=5-6

-0.25y=-1

y=-1 /- 0.25=4

x=12-y

x=12-4=8

Answer:

<em>Tanya bought 8 oranges and 4 bananas.</em>

4 0
2 years ago
Read 2 more answers
Another stack of books is 43 inches tall. Each book is 1/2 inch thick. Write an expression that represents the number of books i
enyata [817]

Answer:

86 books

Step-by-step explanation:

A stack of books is 43 inches tall.

Each book is \frac{1}{2} inch thick.

To find the number of books in tha stack, divide the height of the stack by the height of the book:

43:\dfrac{1}{2}

The division by the fraction \frac{1}{2} is equivalent to the multiplication by the fraction \frac{2}{1}, so

43:\dfrac{1}{2}=43\cdot \dfrac{2}{1}=43\cdot 2=86

5 0
3 years ago
Chistopher is 20 years younger than ishaan. Ishaan and chistopher first met two years ago. Fourteen years ago, ishaan was 3 time
lisabon 2012 [21]

Answer:

Ishaan is 49 years old.

Step-by-step explanation:

Let the present age of Christopher be 'C'.

Let the present age of Ishaan be 'I'.

From the given data, we can form equations which will help us solve the problem.

Christopher is 20 years younger than Ishaan. This means:

C = I - 20                  . . . (1)

Fourteen years ago, Ishaan would have been (I -14) years old and Christopher (C - 14) years old.

From the data, I - 14 = 3(C - 14)         . . . (2)

Substituting the value of C in Equation 2, we get:

I - 14 = 3(I - 20 - 14)

⇒ I - 14 = 3(I - 34)

⇒ I - 14 = 3I - 112

⇒ 2I = 112 + 14 = 98

⇒ I = 49

So, Ishaan is 49 years old.

4 0
3 years ago
A washing machine is filling up with water at a constant rate. The rate is 3/4 of a gallon in 1/5of a minute. Don calculated the
mel-nik [20]
He found out 1/5 of 3/4 instead of multiplying by 5
4 0
2 years ago
Read 2 more answers
What is 4-2x=6<br><br> I NEED HELP ASAP!!
alina1380 [7]

Answer:

1

Step-by-step explanation:

the +4 turns into -4

6-4=2 the (+4-4 on the left would cancel out)

-2x/2 would cancel out as well

2 divided by 2 = 1

you could have used a scientific calculator on google (for future reference)

4 0
3 years ago
Read 2 more answers
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