3 years ago

las edades de maría y susana suman 56 años si la edad de maría es los 3/5 de la edad de susana ¿ que edad tiene maría?

1 answer:

4 0

Susana=s
maria=m

m= 3s/5

s+m=56
s+(3s/5)=56
(5s+3s)/5=56
8s=56*5
8s=280
s=280/8
s=35

35 --->5/5
x ---> 3/5

x= (3/5)*35 / (5/5)
x=21
edad de maria= 21 años

You might be interested in

Yolanda owns 4 rabbits. She expects the number of rabbits to double every year.

zhuklara [117]

64 years divided by 4 = 16 years

6 0

3 years ago

3x + y = – 7<br> Solve to find were the two point intercept

Tju [1.3M]

Answer:

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>

First we need to convert it into y=mx+c form

${:}\longrightarrow$ $\sf 3x+y=-7$

${:}\longrightarrow$ $\sf y=-7-3x$

Now create table using this

<h3><u>Table</u><u>:</u><u>-</u></h3>

$\boxed{\begin{array}{|c|c|c|c|} x & 1 & (-1) & 0 \\ y & -10 & (-4) & -7 \end{array}}$

Hence the intercepts are

$\therefore$ $\sf A (1,-10),B(-1,-4),C(0,-7)$

3 0

3 years ago

The value of the expression 23 +32–3x4–52-5+(7x4) is

Mashcka [7]

Answer:

Explanation:

(23+32)-(3×4)-(52-5)+(7×4)

(55)-(12)-(47)+(28)

55-12=43
-47+28= -19
43-19=24

4 0

3 years ago

The length of the top of a computer desk is 2 1/4 feet longer than it’s width. If it’s width measures y feet, express its length

Lera25 [3.4K]

Answer:

The length as an algebraic expression in y is $y + (2\frac{1}{4} )$ ft

Step-by-step explanation:

The measure of the width of the computer desk = y feet

The measure of the length of the desk = width + 2 1/4 ft

⇒Measure of Length = $y + (2\frac{1}{4} )$ ft

Hence, the length as an algebraic expression in y is $y + (2\frac{1}{4} )$ ft

5 0

4 years ago

Davey built a bookshelf 36 in. long. Can the shelf hold a set of encyclopedias if there are 24 books and each book averages 5/4

grin007 [14]

Yes, the 36" shelf can hold all 24 books. As 5/4=1.25" meaning, you take 1.25X24=30". So 24 books only take up 30 inches of a 36 inch shelf.

5 0

4 years ago