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stepladder [879]
3 years ago
11

Ruby uses 7.2 pints of blue paint and white paint to paint her bedroom walls. 3/4 of this amount is blue paint, and the rest is

white paint. How many pints of white paint did she use to paint her bedroom walls?
Mathematics
1 answer:
Nuetrik [128]3 years ago
5 0

Answer:

1 4/5 or 1.8 pints are white

Step-by-step explanation:

1/4 of 7 1/5 = 1/4 x 36/5 = 36/20 or 9/5, which is 1 4/5

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Solve for x and y...............​
sladkih [1.3K]

Answer:

9. x=30, y=10\sqrt{3}

11. x=5\sqrt{3}, y=10\sqrt{3}

Step-by-step explanation:

9)

\sin x=\dfrac{10}{20}\\x=\sin^{-1}\left( \dfrac{1}{2} \right)=30^{\circ}\\y=\sqrt{20^2-10^2}=\sqrt{400-100}=\sqrt{300}=10\sqrt{3}

11)

\tan 60= \dfrac{15}{x}\\x=\dfrac{15}{\tan 60}=5\sqrt{3}\\y=\sqrt{(5\sqrt{3})^2+15^2}=\sqrt{75+225}=\sqrt{300}=10\sqrt{3}

Hope this helps!

7 0
3 years ago
Read 2 more answers
The mean of a data set is equal to 10 and its standard deviation is equal to 1. If we add 5 to each data value, then the mean an
andrey2020 [161]
Let
S = sum of the data values
n = number of data values

The mean M is equal to 
M = S/n
since you add up the values and divide by n. We don't need to know what S or n are. 

If we add 5 to each data value, then we're adding on n copies of 5, or 5n

The new mean N is

N = (S+5n)/(n)
N = (S/n) + (5n/n)
N = M + 5

The new mean is a result of taking the old mean M and adding on 5

So,
N = M+5
N = 10+5
N = 15

The standard deviation will remain the same because each data value hasn't moved in relation to one another. Every data value has been shifted up the same amount. For instance if A and B are two points in this data set, then A+5 and B+5 will be the same distance away. Apply this logic to any number of data values. While standard deviation isn't that simple, it still has a loose connection to "distance" of the values, or how spread out they are. 


So that's why the final answer is choice C)
5 0
3 years ago
6th Grade Math Homework!
Anastaziya [24]
Where are the pictures??
5 0
2 years ago
Read 2 more answers
There are 48 students in the dass. They arrange their desks in rows with 8 desks in each row.
Orlov [11]

Answer:

6 rows

Step-by-step explanation:

We know that 48 desks are split up into rows of 8

If we divide the 48 total desks by the 8 desks in each row... we find the number of rows.

48/8 = 6

8 0
3 years ago
In a bookstore a shipment of 84 boxes of books arrives. Each box contains 25 books.How many books were in the shipment?
ryzh [129]
84 x 25 = 1700 books were in the shipment
7 0
3 years ago
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