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vovangra [49]
3 years ago
11

The expression (√90 *√40) - (√8*√18) simplifies to what

Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0

Answer:

48

Step-by-step explanation:

\sqrt{90 \times 40}  -  \sqrt{8 \times 8}

Answer 48

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20. Sketch the level curve of the function f(x, y) that contains the point (5,0).
PolarNik [594]

At the given point,

f(5,0) = \dfrac1{\sqrt{5^2 + 0^2 - 9}} = \dfrac1{\sqrt{16}} = \dfrac14

Then the level curve is

\dfrac1{\sqrt{x^2 + y^2 - 9}} = \dfrac14 \\\\ \implies \sqrt{x^2 + y^2 - 9} = 4 \\\\ \implies x^2 + y^2 - 9 = 4^2 \\\\ \implies x^2 + y^2 = 25 = 5^2

which is a circle centered at the origin with radius 5 - quite easy to sketch.

5 0
2 years ago
Which of the following is equivalent to 5(7 - p)?<br> A. -5p+35<br> B 35+5p<br> C -35+ 50
vazorg [7]
Since 7 - p are in the parenthesis and 5 is outside the parenthesis u distribute 5 to 7 and -p. 5 x 7 is 35 and 5 x -p is -5p so ur answer is A, -5p + 35.
7 0
3 years ago
What did I do wrong, it says I'm wrong
Alisiya [41]

Answer:

This is not a function.

Step-by-step explanation:

Note, that set A contains 3 elements that only map to 2 elements in set B.  A function would require that each element of set A to match to only one element of set B.

Since set B contains an element with no mapping to an element in set A, this does not represent a function.

7 0
3 years ago
How many ways can I make 57 cents using no more than 5 pennies
ki77a [65]

Answer: 2 quarters, a nickel, and 2 pennies

Step-by-step explanation:

4 0
4 years ago
Write an equivalent expression by distributing the " sign outside the parentheses: 5n - (7.4p - 9.6​
liberstina [14]
5n - 7.4p + 9.6 is the answe
4 0
3 years ago
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