Answer:
<em> 5 1/2 weeks </em>
Step-by-step explanation:
Given
Time it will take to complete the building = 85 1/4 hrs
Time he works on the house weekly = 15 1/2 hours
This can be expressed as
1 week = 15 1/2 hours
To calculate the number of weeks it will take to complete the house, we will say:
x = 85 1/4
Cross multiply
15 1/2 x = 85 1/4
31/2 x = 341/4
31x/2 = 341/4
Cross multiply again
31x * 4 = 2 * 341
124x = 682
x = 682/124
x = 5.5weeks
<em>Hence it will take Ryan 5 1/2 weeks to complete the house</em>.
Answer:
6. Because to decrease = number × 100-% over 100(as a fraction)
which is =39.99 ×100-30% over 100
= 39.99 × 70/100
=27.993
After you take your answer from the decrease and subtract from the original price which is 39.99
39.99-27.993 *note the 39.99 has a zero at the end
the answer = 11.997 Rounded off it becomes 12
Answer:
Step-by-step explanation:
1) find two factors of c that sum up to -2.
2) 5 and -7 are factors of -35 that sum up to -2.
3) (x+5)(x-7)
4) x+5= 0, x= -5
5) x-7= 0, x= 7
4) the two solutions are -5 and 7.
Answer:
Step-by-step explanation:
Use inverse operations and simplification to isolate the variable in the equation.
Now divide the equation by 
remember, dividing a fraction is the same as multiplying by the reciprocal. The reciprocal of a fraction is when one switches the places of the numerator (number on top of a fraction bar), and the denominator (number on the bottom of the fraction bar).
÷
Simplify,
Respuesta:
27,22 metros
Explicación paso a paso:
Dado :
Sombra del poste = 21 metros
Altura de la persona = 1,75 metros
Sombra de la persona = 1,35 metros
Altura del poste =?
Usando la relación:
Altura de la persona / sombra de la persona = altura del poste / sombra del poste
1,75 / 1,35 = x / 21
Cruz multiplicar
1,35 * x = 1,75 * 21
x = (1,75 * 21) / 1,35
x = 27,22
