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shtirl [24]
3 years ago
10

In a survey four out of seven people named blue as their favorite color. One out of three

Mathematics
1 answer:
JulijaS [17]3 years ago
3 0

Answer:

The answer is on the picture.

Step-by-step explanation:

The answer is on the picture.

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HELP PLS ITS URGENT
marysya [2.9K]

Melanie: 15 years old

Kevin: 5 years old

Assume Kevin's present age is x.

That means that 3 years ago, his age would be x - 3.

Melanie's age would be 6(x - 3).

Same thing for 5 years into the future:

Kevin's age would be x + 5.

Melanie's age would be 2(x + 5).

The two equations we have here are:

\left \{ {{x + 5 = 2(x + 5)} \atop {x - 3 = 6(x - 3)}} \right.

By subtracting both equations, we are simplified to:

8 = -4x + 28

By solving the equation, we get x = 5.

That means that Kevin's current age is 5 years old.

Melanie's age could be calculated by substituting Kevins'.

6(x - 3) --> 6(5 - 3) --> 12

Since that was 3 years ago, you need to add 3 to 12 to get her current age.

12 + 3 = 15

Melanie's current age is 15 years old.

3 0
2 years ago
Fast as possible, 100 point<br> Write an expression for the Product of (x+5)(x-3)
joja [24]

Answer:

I think this could be the answer- x^ +2x-15

4 0
3 years ago
Scientific notation of 47300
Reil [10]
4.7 x 10^4
or 5 x 10^4

<span>The scientific notation of 70, 030, 000. To find the scientific notation of this value </span><span><span>
1.  </span>We first move the period which separates the whole number from the decimal number which is located after the numbers of the given value.</span> 
<span><span>2.  </span>We move it in the very recent order number which is seventy million, seven and zero.</span> <span><span>
3.  </span>It becomes 7.003</span>
<span><span>4.  </span>Thus we count how many moves we did from the tens to the ten million order place.</span> <span><span>
5.  </span>7.003 x 10^7 </span>


6 0
3 years ago
Evaluating Expressions
d1i1m1o1n [39]

Answer: 13. -12 , 14. 40 ,  15. 16 , 16. 4.5

Step-by-step explanation:

8 0
2 years ago
The cost of a New York Yankees baseball cap is $24.00. The local sporting goods store sells it for $30.00. Find the markup rate.
Mariulka [41]

The markup rate is 25%.

$30.00 -  $24.00  =  $6.00

24 x 25%

24  x .25 = 6

Hope this helps. :)

6 0
3 years ago
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