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Bumek [7]
3 years ago
14

What is 5 times a number ,r, decreased by seven

Mathematics
2 answers:
g100num [7]3 years ago
5 0
Here 5n-7< 23 is the answer to your question
Lapatulllka [165]3 years ago
4 0

Answer:

5n - 7 < 23

Step-by-step explanation:

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A bag contains 16 black marbles, 20 orange marbles, 36 gray marbles and 34 purple marbles. If a marble is selected at random, fi
BaLLatris [955]

Answer:

10/53

Step-by-step explanation:

P = no of orange/total = 20/106 = 10/53

3 0
3 years ago
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
The product of 9 and a number is 12 less than three times that number.
Mashutka [201]
9n = 3n-12
-3n= -3n   
6n= -12
 divide by 6 = -2 =n 

to check.. 9 times -2 = -18 soo.. 3 times -2= -6-12= -18 

so it is correct!! 
 
hope it helps :) 
4 0
3 years ago
If the expression ax(2x + y - 5) simplifies to 6x² +3xy - 15x, what is the value of a?
nata0808 [166]
Since:
ax(2x + y - 5) = 6x^2 +3xy - 15x,

we should factor X out of the second equation to find out the value of a:
6x^2 + 3xy - 15x =
x(6x + 3y - 15),

Now that we factored X out, to find a, we need to find the other common factor:

(6x + 3y - 15) / (2x + y - 5),

which is 3.

Hence the value of a is 3
3 0
3 years ago
Read 2 more answers
The length of the rectangular field is 18cm, and the width is 24cm,
natali 33 [55]

Step-by-step explanation:

Just do this

2(L+B)

2(18+24)

2×42

84 Ans.

6 0
3 years ago
Read 2 more answers
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