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DanielleElmas [232]
3 years ago
13

The ratio for 18 girls to 27 boys as a fraction​

Mathematics
2 answers:
Anarel [89]3 years ago
7 0

18:27 = 2/3

18/9 = 2

27/9 = 3

9 is the greatest common factor.

Pani-rosa [81]3 years ago
6 0

Answer:

girls: 3/7

boys: 9/14

Step-by-step explanation:

i put them in simplest form

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Will an object 20ft below sea level have a different absolute value than an object 20ft above sea level .. explain
trapecia [35]

No, the objects below the sea and above both have the absolute value of 20 ft.

The absolute value is how far the number is away from zero- it doesn't matter if it is in the positive or negative direction

For example, if you drove 20 miles from your house in one direction while your friends drove 20 miles in the other direction- both of  the distances of you and your friend from the your house is 20 miles.

Distance is a great example of the absolute value because it is always positive. It doesn't matter what direction, it is always 20 miles from your house.

6 0
3 years ago
If c is a real number and if 1 + i is a solution of the equation x^2 -2x + c = 0, what is the value of c?
Nana76 [90]

Answer:

c = 2

Step-by-step explanation:

Substitute x = 1 + i into the equation

(1 + i)² - 2(1 + i) + c = 0 ← distribute left side

1 + 2i + i² - 2 - 2i + c = 0 ( note that i² = - 1 )

1 + 2i - 1 - 2 - 2i + c = 0 ← collect like terms on left

- 2 + c = 0 ( add 2 to both sides )

c = 2

6 0
3 years ago
Read 2 more answers
Please help me, thank you!​
Anon25 [30]

Answer:

a = 0.3

b = 0.4

c = 40%

d = 15%

Step-by-step explanation:

There are a total of 10 tick marks. So we know that 1 tick mark = 10%

a has 3 tick marks so you can say it's 0.3

b has 4 tick marks so you can say it's 0.4

c also has 4 tick marks, but it's asking for the percentage, so you get 40%

d is 1 1/2 tick marks. It's also asking for percentage. You know 1 tick = 10% and 1/2 tick = 5* so d = 15%

8 0
2 years ago
Which vectors represent the reflection of the vector <3, -7> across the x-axis? A. [3/7} B. [-3/7] C. <-3, 7> D. &lt
Alexandra [31]

Answer:

D)    < 3, 7)>

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given that the vector < 3 , -7 >

Given the vector reflection across the x-axis

                   (x,y) → (x , -y)

The vector < 3,-7> →< 3, -(-7)>

                  < 3,-7> →< 3, 7)>

3 0
3 years ago
Read 2 more answers
What is the perimeter of a rectangle whose width is (x - 7) units and whose length is (3x + 10) units?​
FromTheMoon [43]

Answer:

The answer is "(8x + 6) units".

Step-by-step explanation:

Formula of perimeter is:

\to \bold{P=2 \text{(Length +width)} }

       =2((3x+10)+(x-7))\\\\=2(4x+3)\\\\= 8x+6

4 0
3 years ago
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