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pav-90 [236]
3 years ago
9

Help me with #20, please

Mathematics
2 answers:
Fed [463]3 years ago
8 0
Flour is 3 because 3x3=9 and 3x6 is half of 3 =18 and sugar is 18 count by 9's
eduard3 years ago
3 0
In the flour row it is 4.5 and in the sugar row it is 18. Hope this helps :)
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assume that women's heights are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. find the
drek231 [11]

Answer:

65.3658 inches

Step-by-step explanation:

Let X be the height of a woman randomly choosen. We know tha X have a mean of 63.6 inches and a standard deviation of 2.5 inches. For an x value, the related z-score is given by z = (x-63.6)/2.5. We are looking for a value x_{0} such that P(X < x_{0}) = 0.76, but, 0.76 = P(X < x_{0}) = P((X-63.6)/2.5 < (x_{0}-63.6)/2.5) = P(Z < (x_{0}-63.6)/2.5), i.e., (x_{0}-63.6)/2.5 is the 76th percentile of the standard normal distribution. So, (x_{0}-63.6)/2.5 = 0.7063, x_{0} =63.6+(2.5)(0.7063) = 65.3658. Therefore, the height of a woman who is at the 76th percentile is 65.3658 inches.

7 0
3 years ago
Solve the equation.<br> a² = 100<br> Enter the correct answer in the boxes.<br> a = 10 or a = ?
Lyrx [107]
A = 10 or a = -10

When you square a number, you're essentially multiplying it by itself.

Recall that multiplying two negative numbers will result in a positive numbers. Knowing this, we know that -10 times -10 equals 100.
7 0
3 years ago
Mr. Nicholson accepts a job that pays an annual salary of $60,000. In his employment contract, he is given the option of choosin
kodGreya [7K]

Answer:

B

Step-by-step explanation:

Just read and you will see why i say that

3 0
2 years ago
If the product of two number is 10 and the sum is 7 ,then the longest of the two number is​
irinina [24]

Answer:

5 units

Step-by-step explanation:

Step one:

Given data

Le the first number be x

and the second number be y

So

x*y= 10-----------------1

and

x+y= 7-----------------2

from eqn 1

x= 10/y

put x= 10/y in eqn 2

10/y+y= 7\\\\10/y= 7-y

cross multiply we have

10=y(7-y)\\\\10=7y-y^2

rearrange

y^2-7y+10=0

the factors of the quadratic expression are

-5 and -2

y^2-5y-2y+10= 0\\\\y(y-5)-2(y-5) =0\\\\y-2=0\\\\y= 2\\\\y-5= 0\\\\y=5\\\\

The longest side is 5 units

3 0
3 years ago
Which of the following rational numbers is equal to 2 point 8 with bar over 8 ? twenty two over nine, twenty four over nine, twe
alina1380 [7]
Just to remove ambiguities, the bar over the expression means it's repeating itself to infinity.

\bf 2.888\overline{8}\impliedby \textit{now say, let's make }x=2.888\overline{8}&#10;\\\\\\&#10;\textit{and multiply it by 10, to move over the 8 to the left}&#10;\\\\\\&#10;\begin{array}{llll}&#10;10x&=&10\cdot 2.888\overline{8}\\&#10;&&28.88\overline{8}\\&#10;&&26+2.888\overline{8}\\&#10;&&26+x&#10;\end{array}\implies 10x=26+x&#10;\\\\\\&#10;9x=26\implies x=\cfrac{26}{9}

notice, the idea being, you multiply it by 10 at some power, so that you move the "recurring decimal" to the other side of the point, and then split it with a digit and "x".

now, you can plug that in your calculator, to check what you get.
4 0
3 years ago
Read 2 more answers
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