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valina [46]
3 years ago
13

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;

Therefore, if the right hand side of the inequality is lesser than the left hand side, when the signs of the left and right hand sides of the inequality changes after a division , by a negative number, we have;

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

Therefore, when you divide both sides of an inequality by a negative number, you need to <u>flip</u> the inequality symbol.

7 0
3 years ago
8) A school community had planned to reduce the number of grade 9 students per class room by constructing additional class rooms
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

Multiply thru by c(c-4)

---

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

---

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

----

10c^2-40c-4800 = 0

c^2-4c-480 = 0

Factor:

(c-24)(c+20) = 0

---

Positive solution:

c = 24 (# of classrooms originaly planned)

7 0
2 years ago
A bag contains Red, Green or Yellow balls. A ball is taken at random from the bag. The probability that it is Red is 0.4 and the
Luba_88 [7]

Answer:

1000 balls

(there are infinitely many solutions to this question; you can scale up 1000, use a different total, etc.)

Step-by-step explanation:

there are, of course, multiple possible numbers,

but the easiest way is to go with 1000, because we can say 375 / 1000 and 400 / 1000

(0.4 + 0.275 + 0.225 = 1)

400 out of 1000 balls are red (400/1000 = 4/10 = 0.4)

375 out of 1000 balls are green (375/1000 = 3.75/10 = 0.375)

225 out of 1000 balls are yellow (225/1000 = 2.25/10 = 0.225)

the question never gave detail as to if the answer should be the <em>lowest</em><em> </em>number of possible balls, so this value is possible.

So, a possible number of balls in this bag is 1000.

3 0
2 years ago
Find the y-intercept of the following equation. Simplify your answer.<br><br> y = 10x + 6
hram777 [196]

Answer:  6

Step-by-step explanation:

y = mx + b, where b is the y-intercept, in this case, y-intercept is 6.

3 0
3 years ago
Please show me step by step​
AURORKA [14]

Answer:

Step-by-step explanation:

Picture

7 0
2 years ago
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