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MrRa [10]
3 years ago
8

Multiple choice question: simplify √-72 . A) -6√2 B) 3√-2 C) 3√2i D) 3i√2

Mathematics
2 answers:
luda_lava [24]3 years ago
7 0
The answer is 6i sqr rt * 2
Closest one to the answer is A
zhuklara [117]3 years ago
4 0

Answer:

im really not to sure on this one. sorry dude

Step-by-step explanation:

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The coach pays $72 for 18 hamburgers. What is the cost per hamburger? What math concept do you use to solve the problem?
Talja [164]

Answer:4

Step-by-step explanation:

you divide 72 by 18.

5 0
3 years ago
Read 2 more answers
For g(x)=x^2-x find g(x) when x=-2
torisob [31]

Answer:

g(x) = 6

Step-by-step explanation:

Begin with substuting the x variable with -2, we do this because the question has listed the value of x already.

Using the value of x, -2 we determine g(x).

g(x) = -2^2 + 2

Above is what the equation would look as, after you input the value of -2.

Using pemdas, (parantheses, exponents, multiplication, division, addition, subtraction) solve the equation.

-2^2 = 4

Think of it as -2 * -2, which is why -2^2 is 4.

Add 4 +2.

4 + 2 = 6.

Therefore, the value of g(x) = 6

6 0
3 years ago
A worker at a snack stand opened a new box of cups. The first day he used 30 cups , the second day the worker used 15 percent of
Sholpan [36]

Answer:

Step-by-step explanation:

the first day he used 30 cups

the second day he used 15% of the remaining cups...a total of 90 cups were used on second day.

so 15%of the remaining cups = 90.....so if u let x be the total cups, then the remaining cups would be x - 30

15% of (x - 30) = 90.....turn ur percent to a decimal..." of " means multiply

0.15(x - 30) = 90

0.15x - 4.5 = 90

0.15x = 90 + 4.5

0.15x = 94.5

x = 94.5 / 0.15

x = 630 total cups <==

lets check..

start with 630 cups....used 30 the first day....leaving u with 600 cups....15% of the remaining cups = 90.....so 15% of 600 = 90....lets check it

15%of 600 = 0.15(600) = 90...yep, thats correct....there were 630 cups in the new un-opened box

5 0
4 years ago
Increase 12 in to the given ratio of 4:3​
inysia [295]

Answer:

16:12

Step-by-step explanation:    

                   (4+12)=16

16/4 = 4

4x3=12

    Another method:

4---------3

16-------x

Cross multiplication

4x=16x3

4x=48

x=12

4 0
2 years ago
I need help on math ​
Viefleur [7K]

Answer:

its the first one

Step-by-step explanation:

i have no step by step explanation

7 0
3 years ago
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