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lbvjy [14]
4 years ago
12

If Roberto does a job in 11 hours and with the help of Sarah they can do it together in 2 hours, how long would it take Sarah to

do it alone?
Mathematics
1 answer:
Levart [38]4 years ago
3 0
I think it is seven but im probaly wrong
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Hank has 50 peso, 200 peso and 500 peso bills in his wallet. He has five less 200 bills as 50 bills, and half as many 500 bills
Varvara68 [4.7K]

For an amount of 6250 Peso, Hank have the quantities of the following denominations: 2503 bills of 50 peso, 2498 bills of 200 peso and 1249 bills of 500 peso.

<h3>How to apply systems of linear equations in real life equations</h3>

In this question we must translate the statement of the problem into mathematical expressions and then we must solve the resulting system. We need three equations that describe the quantities of 50 peso, 200 peso and 500 peso bills:

<em>y = x - 5</em>     (1)

<em>0.5 · y =</em> <em>z</em>    (2)

<em>x + y + z = 6250</em>     (3)

The solution of the system of <em>linear</em> equations is described below:

<em>x =</em> 2503, <em>y =</em> 2498, <em>z =</em> 1249

For an amount of 6250 Peso, Hank have the quantities of the following denominations: 2503 bills of 50 peso, 2498 bills of 200 peso and 1249 bills of 500 peso. \blacksquare

To learn more on systems of linear equations, we kindly invite to check this verified question: brainly.com/question/20379472

8 0
2 years ago
Expression for the quotient of b divided by the difference of two minus 3
uysha [10]

Answer:

The required expression is

                                     \frac{b}{2 - 3}  = - b

Step-by-step explanation:

 

Difference of two minus three = 2-3

Quotient of b divided by the difference of two minus three is

                                             \frac{b}{2-3} = \frac{b}{-1} = - b

Therefore, the required expression is

                                                  \frac{b}{2-3}  \ \ \ \ \ \ \ \ or \ \ \ \ \ \ \ \  - b

7 0
3 years ago
Convert 4cm to meters
Troyanec [42]
4cms would be 0.04 meters.
3 0
4 years ago
Read 2 more answers
In adding algebraic expression , we collect different groups of ........................
Delvig [45]

Answer:

In adding algebraic expression , we collect different groups of like terms.

8 0
3 years ago
Read 2 more answers
What are the values of the coefficients and constant term of 0 = 4 – 7x2 + x in standard form?
katen-ka-za [31]

ANSWER

a =  - 7

b = 1

c = 4

EXPLANATION

The given quadratic equation is:

0 = 4 - 7 {x}^{2}  + x

We rewrite in the standard quadratic equation form to obtain,

- 7 {x}^{2}  + x + 4 = 0

Comparing this to the general standard quadratic equation.

a {x}^{2}  + bx + c = 0

We have my

a =  - 7

b = 1

c = 4

8 0
3 years ago
Read 2 more answers
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