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2 years ago

HELP PLEASE I DON´T UNDERSTAND RATIOS!

Mathematics

2 answers:

jeyben [28]2 years ago

7 0

Answer:

Jake made 7 bead strings

Step-by-step explanation:

The ratio is 2:6 next would be 4:12 then 6:18 and so on. You just add what you started with to the corresponding side. 8:24, 10:30, 12:36, 14:42. The right side is 3x the left side.

kipiarov [429]2 years ago

5 0

Answer:

Step-by-step explanation:

You don't really need to use ratios for this question. You need to understand that for each necklace he uses 2 red and 6 whites.

Let the number of necklaces he can make = x

The total number of beads = 56

2x + 6x = 56

8x = 56 Divide by 8

8x/8 = 56/8

x = 7

So the number of necklaces possible is 7.

If you insist on doing this with ratios then you could do it as

2/8 = x/56 What this means is that 2 reds to the total = x / 56. The 56 is the total number of beads used. The x represents the number of reds.

2/8 = x/56 Cross multiply

2 * 56 = 8x Divide both sides by 8

2 * 56/8 = x

x = 14.

That means of the 56 beads used, 14 of them are red.

6/8 = y / 56 Cross multiply

6*56 = 8y

336 = 8y Divide by 8

336/8 = 8y/8

y = 42

This means that 42 beads were white

The total is 56. But here's the catch. The highest prime common to both is 7 and that's how many necklaces can be made.

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What is 79 1/2% of $7570?

Mariulka [41]

Answer:

$6018.15

Step-by-step explanation:

"is" number always goes on TOP "of" number.

"is" number is 79 1/2%

"of" number is $7570

79 1/2 % / $7570 * 100 = $6018.15 

To find out if the answer is correct :

6018.15 / 7570 * 100 = 79.12%

5 0

3 years ago

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goblinko [34]

Answer:

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Step-by-step explanation:

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3 years ago

How many solutions does an equation have when you isolate the variable and it equals a constant?

OLEGan [10]

1 solution is available when variable equals a constant.

Answer: Option B.

Explanation:

You will be able to determine if an equation has one solution (which is when one variable equals one number), or if it has no solution (the two sides of the equation are not equal to each other) or infinite solutions (the two sides of the equation are identical).

The ordered pair that is the solution of both equations is the solution of the system. A system of two linear equations can have one solution, an infinite number of solutions, or no solution. If a consistent system has exactly one solution, it is independent.

3 0

3 years ago

Can somebody help I am struggling a bit

Delicious77 [7]

Answer:

Step-by-step explanation:

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Hope this helps

5 0

3 years ago

X and y are positive integers. explain why incorrect to claim that

dedylja [7]

You can find counterexamples to disprove this claim. We have positive integers that are perfect square numbers; when we take the square root of those numbers, we get an integer.

For example, the square root of 1 is 1, which is an integer. So if y = 1, then the denominator becomes an integer and thus we get a quotient of two integers (since x is also defined to be an integer), the definition of a rational number.

Example: x = 2, y = 1 ends up with $\frac{2}{\sqrt{1}} = \frac{2}{1}$ which is rational. This goes against the claim that $x/\sqrt{y}$ is always irrational for positive integers x and y.

Any integer y that is a perfect square will work to disprove this claim, e.g. y = 1, y = 4, y= 9, y = 16. So it is not always irrational.

4 0

3 years ago