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3 years ago

7

A picture on a page was reduced by 60% of its original size, and this copy was then reduced by 20%. What percent of the size of

the original picture was final copy ?

1 answer:

melamori03 [73]3 years ago

6 0

Answer:

the final copy should be 12% of the original picture.

Step-by-step explanation:

you multiply 20% by 60%

and you get 0.12 which is the same as 12%

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Round each decimal to the nearest whole number

4vir4ik [10]

Answer:

1. 1

2. 8

3. 13

Step-by-step explanation:

hope that helps

6 0

2 years ago

Solve the equation: k^2+5k+13=0

mr_godi [17]

Step-by-step explanation:

k² + 5k + 13 = 0

Using the quadratic formula which is

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac } }{2a} \\$

From the question

a = 1 , b = 5 , c = 13

So we have

$k = \frac{ - 5 \pm \sqrt{ {5}^{2} - 4(1)(13) } }{2(1)} \\ = \frac{ - 5 \pm \sqrt{25 - 52} }{2} \\ = \frac{ - 5 \pm \sqrt{ - 27} }{2} \: \: \: \: \: \: \\ = \frac{ - 5 \pm3 \sqrt{3} \: i}{2} \: \: \: \: \: \:$

<u>Separate the solutions</u>

$k_1 = \frac{ - 5 + 3 \sqrt{3} \: i }{2} \: \: \: \: or \\ k_2 = \frac{ - 5 - 3 \sqrt{3} \: i}{2}$

The equation has complex roots

<u>Separate the real and imaginary parts</u>

We have the final answer as

$k_1 = - \frac{5}{2} + \frac{3 \sqrt{3} }{2} \: i \: \: \: \: or \\ k_2 = - \frac{5}{2} - \frac{3 \sqrt{3} }{2} \: i$

Hope this helps you

8 0

2 years ago

Finish the pattern 2,4,8,16,_,_,_,_

motikmotik

It's multiplying by two

8 0

3 years ago

Fill in the blanks

katen-ka-za [31]

1 - 9
2 - 87
3 - -2
4 - -9
that’s the answers for them :), have a great day !! :)

5 0

3 years ago

U can do any problem

IrinaVladis [17]

Answer:

For question 14

The answer is x= 52%

Step-by-step explanation:

5 0

3 years ago