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rusak2 [61]
3 years ago
15

Do the following ratios form a proportion? 5/8, 9/14 OR 10/16, 18/28 BRAINLIEST AND 30 POINTS

Mathematics
1 answer:
Klio2033 [76]3 years ago
4 0

Answer:

18/28

Step-by-step explanation:

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Chain emails are emails with a message suggesting you will have good luck if you forward the email on to others.
Flauer [41]

Answer:

a. f(n)=3(to the power of n)+1

n is the number of days, day one being when the student sent it to 3 others

the plus one is the one student

8 0
3 years ago
On a field trip there were 5 girls for every 8 boys. how many girls attended the 130-student field trip?
postnew [5]
50 girls attended the trip.
  80 boy + 50 girls = 130 total students
8x10 =80 
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multiply both by 10.
4 0
3 years ago
Read 2 more answers
7r²+9=1 quadratic equation.
dezoksy [38]
<span>7r²+9=1 

</span><span>the equation is contradictory, just to prove

7r</span>² + 9 = 1

7r² + 9 -1 = 0

7r² + 8 = 0

<span>We write the equation in the form of products of
</span>
7 * (r² + 8/7) = 0

<span>the product is equal to 0 when one of the factors is zero
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7≠0      ∨      (r² + 8/7) = 0
                     r² ≠ - 8/7
<span>any number squared is not negative.

</span><span>We proved that none of the factors is not equal to zero , so the right side of the equation is not equal to the left . The equation is contradictory</span>
7 0
3 years ago
If the perimeter of a rectangle is 6x^2-2x+14 and the length is x^2-x+8 what is the measure of the width?
s2008m [1.1K]

Answer:

w = 2x^2-2x+15

Step-by-step explanation:

Since the formula to find the perimeter is P=2l+2w, use this to set up your equation:

6x^2-2x+14 = 2(x^2-x+8) + 2w

Then, distribute the 2 to everything inside the parentheses.

6x^2-2x+14 = 2x^2-2x+16 + 2w

Subtract 2x^2-2x+16 from both sides, leaving you:

4x^2-4x+30 = 2w

Divide 2 from both sides.

2x^2-2x+15

The answer is 2x^2-2x+15

7 0
2 years ago
How many permutations exist of the letters a, b, c, d taken four at a time?
baherus [9]
The answer to this is A, 24
4*3*2*1=24 
4 0
4 years ago
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