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Sauron [17]
3 years ago
10

These are the last ones

Mathematics
2 answers:
Phantasy [73]3 years ago
7 0

Answer:

9)  p = 48

10)  a = 3.6

Step-by-step explanation:

9)  p/8 + 3 = 9

p/8 = 6

p = 48

10) 12a/4 + 18/3 = 20.4

4a + 6 = 20.4

4a = 14.4

a = 3.6

sladkih [1.3K]3 years ago
5 0

Answer:

woooooooooooooooooowwwwwwwww

Step-by-step explanation:

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The salary of teachers in a particular school district is normally distributed with a mean of $50,000 and a standard deviation o
andrey2020 [161]

Answer:

D. 54,900

Step-by-step explanation:

We have been given that the salary of teachers in a particular school district is normally distributed with a mean of $50,000 and a standard deviation of $2,500.

To solve our given problem, we need to find the sample score using z-score formula and normal distribution table.

First of all, we will find z-score corresponding to probability 0.975(1-0.025) using normal distribution table.  

From normal distribution table, we get z-score corresponding is 1.96.

Now, we will use z-score formula to find sample score as:

z=\frac{x-\mu}{\sigma}, where,

z = Z-score,

z = Sample score,

\mu = Mean,

\sigma = Standard deviation

1.96=\frac{x-50,000}{2,500}

1.96*2,500=\frac{x-50,000}{2,500}*2,500

4900=x-50,000

4900+50,000=x-50,000+50,000

54900=x

Therefore, the salary of $54900 divides the teachers into one group that gets a raise and one that doesn't.

4 0
3 years ago
What type of number has a decimal that does not repeat or end?
galina1969 [7]
A number that has a decimal that does not repeat or end in an irrational number.  The decimal goes on forever, without a pattern.  Think of it as it is irrational to keep going on and on and on.   Irrational numbers also cannot be put into fractions.
-5 is an integer, it is a whole (positive or negative without a decimal/fraction) number.  An integer can be any whole number as long as it is a whole number and does not have a decimal.<span />
4 0
4 years ago
What it the x and y intercept of y=2x^2+3x+1
babunello [35]

x = -1

y = 1

To find this, input the equation into a graphing calculator, whether online or an actual one, and you have two options:

1 - Search for the points in which the line crosses the x and or y axis.

2 - Hit 2nd Graph to access the table and find when x and y equal zero.

Hope this helps!

5 0
3 years ago
Hard math problems that equal 8
kogti [31]
<span>4x+7x+19=3 x 12 - 4+(5 x 16) - 5 </span><span>

7x+3-2x=4x+2 x 5 + 1


</span>
3 0
3 years ago
If candy cost $5.99 a pound how much would it cost to buy four and a quarter pounds of candy
Degger [83]

Answer:

25.4575

Step-by-step explanation:First since one candy is 5.99 we multiply it by 4 1/4 ponds and then we get $25.4575


7 0
3 years ago
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