All categories

3 years ago

Eight times the sum of 9 and some number is 192.

2 answers:

6 0

8 times(9+x)= 192 where x= “that” certain number.
Multiplying the left side through by 8 gives

72+8x=192
8x= 192-72
8x= 120
Since were finding 8, 8 divides the 120 giving 15
Hence, x(that certain number) = 15.

vovikov84 [41]3 years ago

3 0

Answer:

Step-by-step explanation:

To solve this, divide 192 by 8:

192/9 = 24

Subtract 9 from 24:

24 - 9 = 15

Therefore, 8 times the sum of 9 and 15 is 192

You might be interested in

How can you write 5+5+5 using a different math operation

Len [333]

Answer:

five plus five plus five

Step-by-step explanation:

This is in wording

3 0

2 years ago

Read 2 more answers

PLEASE HELP QUICK! I'M OFFERING 25PTS & BRAINLIEST ANSWER (Its only worth 10pts) I just need this done PLEASE SHOW YOUR WORK

LenaWriter [7]

QUESTION 1

The dimensions of the rectangular blanket are;

$l = (3x + 7)cm$

and

$w = (2x - 3)cm$

The perimeter is given by,

$p= 2w + 2l$

We substitute the dimensions to obtain,

$p = 2(2x - 3) + 2(3x + 7)$

Expand bracket to get,

$p = 4x - 6 + 6x + 14$

This simplifies to
$p =( 10x + 8 )cm$

QUESTION 2

When

$x = 4$
The perimeter becomes

$p =( 10(4) + 8 )cm$

$p =( 40 + 8 )cm$

$p =48cm$

QUESTION 3

Area is given by

$A=l \times w$
$A=(3x + 7)(2x - 3)$

We expand to get,

$A=6 {x}^{2} - 9x + 14x - 21$

This gives us,

$A=(6 {x}^{2} + 5x - 21) {cm}^{2}$

QUESTION 4

If
$x = 4$
Then the area becomes,

$A=6 {(4)}^{2} - 9(4)+ 14(4) - 21$

$A=6 \times 16 - 36+ 56- 21$

$A=96 - 36+ 56- 21$

$A=95 {cm}^{2}$

QUESTION 5.

When the length of the blanket is 5cm longer, then the length of the new blanket becomes

$l = (3x + 7 + 5)$

$l = (3x + 12)cm$

The width is still

$w = (2x - 3)cm$

The perimeter of the new blanket is

$p = 2(3x + 12) + 2(2x - 3)$

This implies that,

$p = 6x + 24+ 4x - 6$

$p = 10x +18$

Comparing to the old perimeter which is

$p = 10x +8$ ,

The perimeter changes by 10 units

8 0

3 years ago

Mrs. Johnson's first test's data: 59, 22, 87, 44, 96, 38, 70, 85, 79. What is the value of Q1?

matrenka [14]

Answer:

Step-by-step explanation:

Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.

3 0

2 years ago

Read 2 more answers

A group of artists is selling small prints to raise money for charity. They sell p prints, and make a profit of f(p) on the sale

enyata [817]

Answer:

A. if the group sells 15 prints, they will lose $85

Step-by-step explanation:

f(p) = 17p - 340

-85 = 17 x 15 - 340

5 0

2 years ago

Determine all critical points for the function. f(x)=(x-10)^5

nikdorinn [45]

A critical point is just where a graph's slope is = to 0, so you can take the derivative of that function and set it equal to 0.

Using the chain rule:
f'(x) = 5(x-10)^4
0 = 5(x-10)^4

divide by 5 on both sides and take the 4th root of both sides.

0 = x - 10

add ten on both sides, and x = 10. Now, plug the x-value back into the original (you want to find the y-value on the original function ,not the derivative).

y = (10-10)^5 = 0

(10,0)

7 0

3 years ago

Eight times the sum of 9 and some number is 192.​

Eight times the sum of 9 and some number is 192.