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3 years ago

1. Sоlvе х^2 = -169.

Mathematics

1 answer:

lys-0071 [83]3 years ago

7 0

Answer:

x=13i, -13i

Step-by-step explanation:

Take the square root of both sides which gives you plus or minus the square root of -169. Then you get plus or minus 13times the square root of negative 1. Now you can say that x equals positive or negative 13i

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your family went out to dinner to celebrate your grandmas 100th birthday. The total for the dinner was $208.60, so your parents

Allushta [10]

Answer:

$\%Tip = 13.04\%$

Step-by-step explanation:

Given

$Tip= \$31.29$

$Bill = \$208.60$

Required

Determine the percentage of the tip

First, we calculate the amount paid

$Amount = Tip + Bill$

$Amount = \$31.29 + \$208.60$

$Amount = \$239.89$

The percentage of the tip is then calculated using:

$\%Tip = \frac{Tip}{Amount} * 100\%$

$\%Tip = \frac{31.29}{239.89} * 100\%$

$\%Tip = \frac{31.29* 100}{239.89} \%$

$\%Tip = \frac{3129}{239.89} \%$

$\%Tip = 13.04\%$

8 0

3 years ago

How do you know that the sum of 7-1g and 7-2 is rational?

user100 [1]

The sum of 7-1 and 7-2 will be a rational number because sum of rational numbers is a rational numbers.

A rational number is a number which can be written in p/q form where q≠0.

We know that when two rational numbers is added then the sum is also a rational number. And when two rational numbers are subtracted then the difference is also a rational number.

So in the given question, lets study the term differently that is,

i) 7 - 1 is a rational number because their difference is equal to 6 and it can be written in p/q form which is 6/1.

ii) 7 – 2 is also a rational number as their difference will be 5 which is a rational and can be written in p/q form which is 5/1.

So when these two rational numbers are added their sum will also be a rational number which is 11.

Learn more about rational numbers here : brainly.com/question/12088221

#SPJ9

5 0

2 years ago

How do you solve 5x-2x+6x+40-9+1-x+3x-8+15+7

Aleonysh [2.5K]

5x-2x+6x+40-9+1-x+3x-8+15+7

First you would combine like terms:

5x - 2x + 6x - x + 3x = 11x and

40 - 9 + 1 - 8 + 15 + 7 = 46, so the simplified expression would be

11x + 46

3 0

3 years ago

Solve x – 5 = 16 for x.

insens350 [35]

Get x all alone on its own side:
x=16+5
x=21

5 0

3 years ago

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What is 0.24% of 77? Round to the nearest hundredth

Kruka [31]

Answer:

.18

Step-by-step explanation:

77 x .24% (0.0024) = .1848

Round to the nearest hundredth...

.18!

6 0

3 years ago

Read 2 more answers