4x + 3 < -1 Cual es la respuesta

Mathematics

1 answer:

Vaselesa [24]3 years ago

5 0

For this case we have the following inequality:

$4x + 3$

To solve we follow the steps below:

We subtract 3 from both sides of the inequality:

$4x$

Equal signs are added and the same sign is placed.

$4x$

We divide between 4 on both sides of the inequality:

$x$

Thus, the solution is given by all values of "x" less than -1.

Answer:

$x$

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maria has a total of 95 dimes and quarters. If the total value of the coins is $23.45, how many quarters does she have? Please S

NARA [144]

This is the concept of application of quadratic equations; To get the number of dimes and quarters we proceed as follows;
suppose there are x dimes and y quarters;
x+y=95.......i
but we know;
$0.1=1 dimes
$0.25=1 quarters
thus
0.1x+0.25y=23.45.....ii
solving equation i and ii by substitution we shall have:
from i;
x=95-y
thus substituting the value of x in equation ii we get
0.1(95-y)+0.25y=23.45
9.5-0.1y+0.25y=23.45

collecting like terms we get:
0.15y=13.95
dividing both sides by 0.15 we get;
y=13.95/0.15=93
x=95-93=2
therefore we conclude that there were 2 dimes and 93 quarters

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Hope this helps you