2 years ago

Find the missing number in this proportion. 3/16 = 5/?

1 answer:

8 0

3/16=5/x
times both sides by 16x (aka cross multiply
3x=5*16
3x=80
divide both sides by 3
x=80/3
x=26 and 2/3
the missing number is 80/3 or 26 and 2/3

You might be interested in

What time is it if half of what has already passed remains until the end of today?

lukranit [14]

Answer:

Step-by-step explanation:

We know that a day contains 24 hours in total.

The time already passed will be represented by $x$ .

The remaining time would be $\frac{x}{2}$ , becasye half of what has already passed remains until the end of the day.

Basically, the sum of these two expression gives 24 hours in total.

$x + \frac{x}{2} =24\\\frac{3x}{2}=24\\ x=16$

Therefore, the actual time is 4 p.m.

7 0

2 years ago

If a,b,c,d, and e are non negative such that x^6-289x^4-x^2+289=(x-a)(x+b)(x_c)(x+d)(x^2+ex+1), what is the value of a+b+c+d+e?

Irina18 [472]

Answer:

Step-by-step explanation:

Hello,

If $X=x^2$ it becomes

$X^3-289X^2-X+289=(X^2-1)(X-289)$

and $289=17^2$

$X^2-1=(X-1)(X+1)=(x^2-1)(x^2+1)=(x+1)(x-1)(x^2+1) \\\\x^2-289=x^2-17^2=(x-17)(x+17)$

So,

$x^6-289x^4-x^2+289=(x^2-1)(x^2+1)(x^2-289)=(x-1)(x+1)(x+17)(x-17)(x^2+1)$

a = 1

b = 1

c = 17

d = 17

e = 0

Then a + b + c + d + e = 36

Thanks

3 0

2 years ago

Alicia works out 7.5+4.8 in her head

Usimov [2.4K]

Answer:

12.3

Step-by-step explanation:

8 0

3 years ago

What is the value of x in simplest radical form ?

STALIN [3.7K]

Use Pythagorean theorem
a^2 + b^2 = c^2
12^2 + 35^2 = c^2
144 + 1225 = c^2
1369 = c^2
Sqrt 1369 = c
37 = c

4 0

2 years ago

Read 2 more answers

A pencil making machine took 1⁄10 of a second to make enough pencils to fill 1⁄9 of a box. At this rate, how long would it take

wlad13 [49]

Answer: 9/10 of a second

6 0

2 years ago

Read 2 more answers