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zavuch27 [327]
3 years ago
6

Translate the following into an algebraic expression:

Mathematics
1 answer:
natka813 [3]3 years ago
4 0

For this case we have the following variables:

x: number of hours that it takes Mr. David to complete a job working alone.

y: number of hours it takes Mr. Ludwing to complete a job working alone.

k: number of hours it takes for both of them to do a job working together.

We now write the equation that models the problem.

To do this, we must add the work rate per hour of each and equal to the rate of work per hour of both.

\frac{1}{x} +\frac{1}{y} =\frac{1}{k}

We have then:

Answer:

The algebraic expression that models the problem is:

\frac{1}{x} +\frac{1}{y} =\frac{1}{k}

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I need help with this
HACTEHA [7]

Answer:

1. measure of angle E is 90 degrees

2. Measure of angle F + measure of angle G is 90 degrees

Step-by-step explanation:

Angle E is 90 degrees because it is marked as a right angle (the square)

A triangle has 180 degrees so if E is 90 degrees then the other 2 also have to equal 90 degrees

8 0
2 years ago
Read 2 more answers
In a 45-45-90 right triangle, what is the ratio of the length of one leg to the
8_murik_8 [283]
In a 45-45-90 triangle, both of the legs have the same length and the ratio of one leg to the hypotenuse is 1:sqrt(2).
7 0
2 years ago
Solve the system by graphing:
AleksandrR [38]

Answer:

Step-by-step explanation:

its c

5 0
3 years ago
In April 2008, an audio CD was available for $14.01. the list price (full price) of the CD was $19.32. What was the percent disc
8_murik_8 [283]
19.30 - ( p / 100 )*19.32 = 14.01 ;
19.30( 1 - p/100 ) = 14.01 ;
1 - p/100 = 14.01 / 19.30
1 - p / 100 = 0.72 ;
p/100 = 1 - 72 / 100 ;
p/100 = 28 / 100 ;
p = 28 ;
The percent discount is 28% ;
4 0
2 years ago
Justo ayer fue el cumpleaños de Mauricio. Si a la edad e Mauricio, le sumo 13, al resultado le resto 10, luego al nuevo resultad
bezimeni [28]

Answer:

Mauricio nació en el año 2000.

Step-by-step explanation:

Supóngase que el cumpleaños se celebra en el año 2020, si x es la edad actual de Mauricio, entonces la expresión matemática que traduce el enunciado del problema es:

\frac{(x+13)-10}{23} +20 = 21

Ahora, se desarrolla y se simplifica la ecuación:

\frac{x+3}{23}+20 = 21

\frac{x+3}{23} = 1

Se despeja x:

x +3 = 23

x = 20

Mauricio tiene 20 años.

Ahora, el año de nacimiento de Mauricio es la sustracción de la edad de Mauricio del año actual:

y = 2020-20

y = 2000

Mauricio nació en el año 2000.

3 0
3 years ago
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