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3 years ago

3) Washing your hands kills germs. If there are 275 germs chilling on your hands and

Mathematics

1 answer:

Romashka [77]3 years ago

4 0

Answer:

So we can use geometric progression each time multiplying by 0.0475

so thats (275*0.0475)*10

So that means that we would get

130.625 so we subtract that from 275

275-130.625=144.375

That would be

Step-by-step explanation:

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What's 13 and 14 thx a lot!

Mumz [18]

13) B. 8.47,8.67,8.7
14) A

Just ask for explanation if u need it

Hope that helped :)

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3 years ago

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The sum of two numbers is 51.

Firdavs [7]

Answer:

21 and 30

Step-by-step explanation:

x + y = 51

x - y = 9

add the two equations and y's will cancel out

2x = 42 divide by 2

x = 21 so put 21 in for x in the top equation and solve

21 + y = 51

y = 30

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3 years ago

I need help solving this I just can’t get the right answer

hodyreva [135]

Answer:

-1.99, 1.99

Step-by-step explanation:

Use a table to find the z-scores.

For the first z-score:

P(x < z) = 0.0233

z = -1.99

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P(x > z) = 0.0233

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4 years ago

For which value(s) of x will the rational expression below equal zero? Check all that apply.

Ivahew [28]

Answer: D.-6 and F.3

Step-by-step explanation:

The given rational number : $\dfrac{(x-3)(x+6)}{(x+7)}$

To find : The value of x , where the rational expression becomes equal zero.

Let's check all the options :

A. 7

At x= 7 , $\dfrac{(7-3)(7+6)}{(7+7)}=\dfrac{26}{7}\neq0$

B. -7

At x= 7 , $\dfrac{(-7-3)(-7+6)}{(-7+7)}=\dfrac{10}{0}=\infty\neq0$

C. 6

At x= 6 , $\dfrac{(6-3)(6+6)}{(6+7)}=\dfrac{36}{13}\neq0$

D. -6

At x= -6 , $\dfrac{(-6-3)(-6+6)}{(-6+7)}=\dfrac{0}{1}=0$

E. -3

At x= -3 , $\dfrac{(-3-3)(-3+6)}{(-3+7)}=\dfrac{-9}{2}\neq0$

F. 3

At x= 3 , $\dfrac{(3-3)(3+6)}{(3+7)}=0$

Thus, at x= -6 and 3 , the rational expression equals to zero .

So , the correct options are : D.-6 and F.3

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3 years ago

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6+7=73.5 7+8=84 11+12=126 12+24=390.6 24+28=?

8_murik_8 [283]

Answer:

Step-by-step explanation:

24+28 = 52

52 - 24 = 28

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3 years ago

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