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ss7ja [257]
3 years ago
6

HELPPPPP ASAPPPP!!!!!!

Mathematics
2 answers:
LenKa [72]3 years ago
5 0

Algebra:

x + y = 12

x = y + 2

y + y + 2 = 12

2y + 2 = 12

2y = 10

y = 5

x = 5 + 2 = 7

5 and 7 (D)

Logic:

Out of the numbers given, which two numbers add up to 12? only 5 & 7

To check, Is one of the numbers 2 more than the other? yes, 7 is 2 more than 5.

In-s [12.5K]3 years ago
3 0

Hey there!!

Let's take the number as x and y

Given,

The sum of x and y = 12

One number is 2 more than the other

Let's take y = x + 2

Equations

x + y = 12

As we know y = x + 2 , plug the value in

x + x + 2 = 12

2x + 2 = 12

Subtract 2 on both sides

2x = 10

Divide by 5 on both sides

x = 5

y = 2 + x

y = 7

The numbers are 5 and 7

Hope my answer helps!

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Nutka1998 [239]

Answer:

z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903

And we can find this probability to find the answer:

P(z

And using the normal standar table or excel we got:

P(z

Step-by-step explanation:

Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

X \sim N(0.917,0.303)  

Where \mu=0.917 and \sigma=0.303

We have the following info from a sample of n =37:

\bar X= 0.872 the sample mean

And we want to find the following probability:

P(\bar X \leq 0.872)

And we can use the z score formula given by;

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

And if we find the z score for the value of 0.872 we got:

z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903

And we can find this probability to find the answer:

P(z

And using the normal standar table or excel we got:

P(z

6 0
3 years ago
What's the domain for this???
nikklg [1K]
All Real Numbers is the domain
8 0
3 years ago
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a medical laboratory technician is staining blood film slides with wrights stain . the Wright strain bottle contains 90 milliter
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Yara multiplies and divides a certain number by the same
Butoxors [25]

For this case we have to:

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y: Represents the exponent of base 10

So, considering a system of equations we have:

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From the first equation we have:

10 ^ y = \frac {40,000} {x}

Substituting in the second equation:

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We choose the positive value:

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Answer:

Yara use 0.4 and10 ^ 5

8 0
3 years ago
3.24 x 10-4<br> 8.1 x 10-7
defon
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