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MArishka [77]
3 years ago
10

Which value of x will make these ratio equivalent? 25/30 = 5/x

Mathematics
2 answers:
Dennis_Churaev [7]3 years ago
7 0
The answer would be C.6
Sindrei [870]3 years ago
4 0
C is the answer because 5 times 6 equals 30 and since 5 is used by 25 therefore making it 6 it can also be divided


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the sum of three numbers is 79. The second number is 5 times the first, while the third is 16 more than the first. Find the Numb
faust18 [17]
Let the 1st number be x; 2nd number be y; 3rd number be z.

x + y + z = 79

x = number we are looking for.
y = x * 5 ==> 5 times the first
z = x + 16 ==> 16 more than the first

Therefor,

x + (x * 5) + (x+16) = 79

1st step, multiply the 2nd number: x * 5 = 5x

x + 5x + x + 16 = 79

Add all like numbers:

7x + 16 = 79

To get x, transfer 16 to the other side and change its sign from positive to negative.

7x = 79 - 16
7x = 63

To get x, divide both sides by 7

7x/7 = 63/7
x = 9

To check. Substitute x by 9.

x + (x * 5) + (x+16) = 79

9 + (9 * 5) + (9 + 16) = 79
9 + 45 + 25 = 79
79 = 79 equal. value of x is correct.

4 0
3 years ago
Read 2 more answers
Which statement best describes the polynomial 2x+8?
AleksandrR [38]
A
It is a first degree polynomial (aka linear because its highest power is 1) and it has two terms (2x and 8)
It does not have eight terms and is not a monomial (one term ie 3x^2)
8 0
3 years ago
Answer to : <br> Factorise this <br> 6x squared -5x - 125
IrinaK [193]
Hello!!

= 6x^2 - 5x - 125

= x (6x - 5) - 125

= (6x + 25) (x - 5)

Good luck :)
8 0
3 years ago
Multiply or Divide<br><br> (i need this for school tomorrow)
lions [1.4K]

Answer:

Ok so here are the simple rules of doing it (very easy) cause I’m not doing it all so . when multiplying a power with The same base keep the base but add the exponents. Dividing, keep the base (if their the same if not then its already simplified same with multiplication) but SUBTRACT the exponents. Also keep the parenthesis if it’s a negative number base.

I’ll do a few.

11) a^10.           11b) 5^4

12) (-2)^2.        

13) 10^2.          13b) s^6

14) -4s^5(t^6) <- [Im not sure of this one)

15) x^3(y^3)

7 0
3 years ago
I have 30 ones, 82 thousand, 60tens and 100 hundreds
Neporo4naja [7]
That creates the number 82,190
6 0
3 years ago
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