Ask question

Ask question

All categories

3 years ago

12

According to the article, "How Can Your Smartphone Make Water Safe to Drink," less than 1% of phone's battery disinfects how muc

h water? *

1 answer:

Paha777 [63]3 years ago

7 0

Answer:

700 A

Step-by-step explanation:

if see ujbvcddfgyggcs456ujhvcddrtuijjjnbbbgc

You might be interested in

Please help asap thanks

Murljashka [212]

Shahs. Dickens icjcns a icjcns icjcns. Did d

6 0

3 years ago

How many more is the 3 in 43021.4 then the 3 in 9760

svet-max [94.6K]

this answer is not possible there is no 3 in 9760

3 0

3 years ago

Can you help me with these?

umka2103 [35]

Answer:

1: x + 5=12 -> x=7

2: 7x = 21 -> x=3

3: b - 2/3 = 5/6 -> x=3/2

4: 1/5m = 20 -> 100

5: 45 = 3(x + 1) -> x = 14

6: 22.5 = 1.5x -> x = 15

Step-by-step explanation:

6 0

3 years ago

Square ABCD is shown below.

valentina_108 [34]

Answer:

35 is the length of BE

Step-by-step explanation:

2(2x + 5) = 8x - 50

4x + 10 = 8x -50

10+50 = 8x-4x

60= 4x

15 = x

2x + 5 = length of BE equal to length of DE

2(15) +5 = BE

30 +5

35 is the length of BE

6 0

3 years ago

What are the zeros of the function f(x) = x^2 + 2x- 8 / x^2 - 2x - 8

Veronika [31]

Answer:

x=-4 and x=2

Step-by-step explanation:

You are given the function

$f(x)=\dfrac{x^2+2x-8}{x^2-2x-8}$

The zeros of the function are those value of x, for which $f(x)=0$

First, find x for which function is undefined

$x^2-2x-8\neq0\\ \\x^2-4x+2x-8\neq 0\\ \\x(x-4)+2(x-4)\neq 0\\ \\(x-4)(x+2)\neq 0\\ \\x\neq 4\text{ and }x\neq -2$

Now find points at which f(x)=0:

$f(x)=0\Rightarrow x^2+2x-8=0\\ \\x^2+4x-2x-8=0\\ \\x(x+4)-2(x+4)=0\\ \\(x-2)(x+4)=0\\ \\x=2\text{ or }x=-4$

For both these values (x=-4 and x=2) function f(x) is defined, then x=-4 and x=2 are zeros of the function.

7 0

3 years ago

Read 2 more answers