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alexira [117]
3 years ago
10

Find the value of x.

Mathematics
2 answers:
Paul [167]3 years ago
8 0

You have to put a complete question in order for us to answer your question!

Sergio039 [100]3 years ago
3 0

Answer:

can you please show attachments?

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Mr.Montgomery's class, there are 8 boys and 12 girls.If Mr.Montgomery selects 1 student from his class at random, what is the pr
Gnoma [55]
Probability=number of specific outcomes / total possible outcomes

P(g)=12/(12+8)

P(g)=12/20

P(g)=3/5
7 0
3 years ago
You deposit $750 in a savings account the earns a 5% annual interest compounded quarterly.
Kobotan [32]

Answer:

a. A = P(1 + \frac{r}{n})^{nt}

b .$914.85

Step-by-step explanation:

Step one:

given data

principal p=$750

rate= 5%= 0.05

for quarterly compounding n=4

a. the function that represents the balance after t years.

A = P(1 + \frac{r}{n})^{nt}

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

b. when t=4

A = 750(1 + \frac{0.05}{4})^{4*4}\\\\A= 750(1 +0.0125)^{16}\\\\A= 75(1.0125)^{16}\\\\A= 750*1.2198\\\\A=914.85

A= $914.85

7 0
3 years ago
A roll of wire is cut into 12 pieces. EACH piece is 3/4 meter long. What is the total length of the wire on the roll????? ​
vampirchik [111]

Answer:

9m

Step-by-step explanation:

3/4 = 0.75

each piece = 0.75

0.75x12=9

7 0
3 years ago
Read 2 more answers
Please help me answer these!!! Thanks :)
Andrei [34K]
-2-(+7) is the same thing at -2-7 which is -9

-3 \frac{2}{7} -(- \frac{5}{7} ) is the same thing as (-3 \frac{2}{7}) + (\frac{5}{7}) which is - \frac{18}{7} or -2 \frac{4}{7}

Last but not least the last one is the Associative Property based on definition listed below :)
Associative Property:<span> When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)</span>
6 0
4 years ago
With food prices becoming a great issue in the world; wheat yields are even more important. Some of the highest yielding dry lan
Rzqust [24]

Answer:

Option E) 61.6

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100 bushels per acre

Standard Deviation, σ = 30 bushels per acre

We assume that the distribution of yield is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(X>x) = 0.90

We have to find the value of x such that the probability is 0.90

P(X > x)  

P( X > x) = P( z > \displaystyle\frac{x - 100}{30})=0.90  

= 1 -P( z \leq \displaystyle\frac{x - 100}{30})=0.90  

=P( z \leq \displaystyle\frac{x - 100}{30})=0.10  

Calculation the value from standard normal table, we have,  

P(z

\displaystyle\frac{x - 100}{30} = -1.282\\x = 61.55 \approx 61.6  

Hence, the yield of 61.6 bushels per acre or more would save the seed.

7 0
3 years ago
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