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Len [333]
2 years ago
10

At noon, a tank contained 10 in. of water. After several hours, it contained 7 in. of water. What is the

Mathematics
1 answer:
Olin [163]2 years ago
5 0
-30% answer is right because it lost 3 inches and 30 percent of 10 is 3.

Answer: -30%
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If the null space of A4×5 is exactly a two-dimensional plane, answer the following:
Hatshy [7]

Answer:

I.

A is a 4 x 5 matrix => A: U -> V, dim U = 5, dim V = 4

Null space is exactly two dimensional plane

dim null (A) = 2

II.

Rank A = dim U - dim Null A = 5 - 2 = 3

III.

Number of linearly Independent columns of A is the rank of A = 3

IV.

Yes, The system Ax = b has no solution sometimes as range of A \neq V

V.

Yes,Sometimes Ax = b has a unique solution

VI.

Yes, sometimes Ax = b has infinitely many solutions

8 0
3 years ago
Which of the following represents the formula that could be used to find the height of the cone
podryga [215]
If you know the volume then:
(3 * Cone Volume) / (PI * radius^2) = height

 
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3 years ago
PLZ HELP I GIVE BRAINLIEST!!! (Plz show work)
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Answer:

800 × ( 3.87 ÷ 100 ) × 1

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3 0
3 years ago
ace landscape buys 100 shovels for $15 each. ace sells all 100 shovels at $29.99. what is his profit?
Delicious77 [7]
To work out the profit, firstly, you have to work out the cost of buying them, which is $15 multiplied by 100, which is $1500. You then have to work out what he sold them all at, which is $29.99 multiplied by 100, which is $2999. You then have to subtract $1500 from $2999, giving you $1499. Therefore, Ace made $1499 in profit. Hope this helps :)
8 0
3 years ago
Read 2 more answers
Slope of a parallel line with the points (7,-5) and (-5,7)
VLD [36.1K]

Answer: Negative 1  The slope of parallel lines is the same.

The attachment shows two such lines, given coordinates labeled.

Step-by-step explanation:

Find the slope of the line passing through the given points.

 rise/run  

Rise is the difference in y-values  7-(-5)  = 12

Run is the difference between x-values  -5 - 7  = - 12

The Slope is 12/-12   simplify:

slope = -1

5 0
3 years ago
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