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goblinko [34]
3 years ago
8

What is the value of s in the equation 3r=10+5s when r=10

Mathematics
2 answers:
tatyana61 [14]3 years ago
5 0
3*10 = 10+5*s
30 = 10+5s
20 = 5s 
s = 4
TiliK225 [7]3 years ago
5 0

Answer:

s=4.

Step-by-step explanation:

We have been given an equation 3r=10+5s. We are asked to find the value of 's', when r=10.

To find value of 's', we will substitute r=10 in our given equation as shown below:

3(10)=10+5s

30=10+5s

Upon subtracting 10 from both sides of our given equation, we will get:

30-10=10-10+5s

20=5s

Now, we will divide both sides of our equation by 5.

\frac{20}{5}=\frac{5s}{5}

4=s

Therefore, the value of 's' is 4, when r=10.

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Almost all medical schools in the United States require students to take the Medical College Admission Test (MCAT). To estimate
Leviafan [203]

Answer:

Probability of having student's score between 505 and 515 is 0.36

Given that z-scores are rounded to two decimals using Standard Normal Distribution Table

Step-by-step explanation:

As we know from normal distribution: z(x) = (x - Mu)/SD

where x = targeted value; Mu = Mean of Normal Distribution; SD = Standard Deviation of Normal Distribution

Therefore using given data: Mu (Mean) = 510, SD = 10.4 we have z(x) by using z(x) = (x - Mu)/SD as under:

In our case, we have x = 505 & 515

Approach 1 using Standard Normal Distribution Table:

z for x=505: z(505) = (505-510)/10.4 gives us z(505) = -0.48

z for x=515: z(515) = (515-510)/10.4 gives us z(515) = 0.48

Afterwards using Normal Distribution Tables and rounding the values to two decimals we find the probabilities as under:

P(505) using z(505) = 0.32

Similarly we have:

P(515) using z(515) = 0.68

Now we may find the probability of student's score between 505 and 515 using:

P(505 < x < 515) = P(515)-P(505) = 0.68 - 0.32 = 0.36

PS: The standard normal distribution table is being attached for reference.

Approach 2 using Excel or Google Sheets:

P(x) = norm.dist(x,Mean,SD,Commutative)

P(505) = norm.dist(505,510,10.4,1)

P(515) = norm.dist(515,510,10.4,1)

Probability of student's score between 505 and 515= P(515) - P(505) = 0.36

Download pdf
6 0
3 years ago
Help help help plz plz
Kryger [21]

Answer:

15

Step-by-step explanation:

We add the exponents so it is 10+5=15

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Slope intercept form of : y=(2/5)x+7
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The slope intercept IS y=2/5x+7
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