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3 years ago

Nine less than the product of 4 and a number is 23

Mathematics

2 answers:

borishaifa [10]3 years ago

7 0

Step-by-step explanation:

4x - 9 = 23

4x = 32

x = 8

the number is 8.

alex41 [277]3 years ago

6 0

<h3><u>Question</u><u>:</u><u>-</u></h3>

nine less than the product of 4 and a number is 23.

<h3><u>Answer</u><u>:</u><u>-</u></h3>

x = 8

<h3><u>Explanation</u><u>:</u><u>-</u></h3>

nine less than the product of 4 and a number is 23 → 4x - 9 = 23

=> 4x - 9 = 23

=> 4x = 23+9

=> 4x = 32

=> x = 32/4

=> x = 8

-----------------------------------------------------------

substituting x = 8 in the equation,

=> 4(8) - 9 = 23

=> 32-9 = 23

=> 23 = 23 ( varified )

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When you divide both sides of an inequality by a negative number, you need to _____ the inequality symbol.

Ahat [919]

Answer:

The correct option is option;

A. Flip

Step-by-step explanation:

When both sides of an inequality is divided by a negative number, it changes the sign of both numbers while their magnitude remain the same;

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The smaller right hand side of the inequality will then have a lesser negative magnitude than the left hand side of the inequality with a higher negative value and the left hand side (with the higher negative value) becomes lesser than the right and therefore, the symbol (sign) of the inequality is flipped

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3 years ago

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Allisa [31]

Step-by-step explanation:

Let "c" be the original number of classrooms.

The 1200/c was the original number of students per classroom.

----

Equation:

1200/(c-4) = (1200/c)+10

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---

1200c = 1200(c-4)+10c(c-4)

---

1200c = 1200c-4800 + 10c^2-40c

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Factor:

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Positive solution:

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Luba_88 [7]

Answer:

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there are, of course, multiple possible numbers,

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