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Anni [7]
3 years ago
12

Which of the following pairs of ratios are equivalent?

Mathematics
1 answer:
aliya0001 [1]3 years ago
8 0

Answer:

38 : 133 and 16 : 56 are equivalent

Step-by-step explanation:

Given

1) 38 : 133 and 16 : 56

2) 15 : 20 and 28 : 56

Required

Determine which is equivalent

1) 38 : 133 and 16 : 56

Ratio = 38 : 133

Divide by 19

Ratio = 2:7 --- can't be further simplified

Ratio = 16 : 56

Divide by 8

Ratio = 2:7

Hence:

38 : 133 and 16 : 56 are equivalent

2) 15 : 20 and 28 : 56

Ratio = 15 : 20

Divide by 5

Ratio = 3 : 4

Ratio = 28 : 56

Divide by 28

Ratio = 1:2

Hence, both are not equivalent.

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What is the quotient of the following in simplest form? 5/9 divided by 2/3
Assoli18 [71]

Answer:

5/6

Step-by-step explanation:

You write the question as such: 5/9 divided by 2/3.

After that, you keep the first fraction, flip the sign and the fraction.

You will get: 5/9 multiplied by 3/2.

When you get this, you then cross multiply and simplify as such.

5/3 multiplied by 1/2.

5/6 would be your solution.

4 0
2 years ago
Which equation could be solved using this application of the quadratic formula?
Alex_Xolod [135]

Answer:

C. x^2 + 2x - 1 = 3

Step-by-step explanation:

The standard form of a quadratic equation is

ax^2 + bx + c = 0

We need to use the quadratic formula and the given expression to find the values of a, b, and c.

The quadratic formula is

x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}

Where the formula has -b, the problem has -2, so b = 2.

Now we have

ax^2 + 2x + c = 0

In the denominator, where the formula has 2a, the problem has 2(1), so a = 1.

Now we have

x^2 + 2x + c = 0

Inside the root, the quadratic formula has -4ac. the problem shows -4(1)(-4). Since we already know that a = 1, then c = -4.

Now we have

x^2 + 2x - 4 = 0

Let's look at choice A.

x^2 + 1 = 2x - 3

Subtract 2x from both sides. Add 3 to both sides.

x^2 - 2x + 4 = 0   <em>This is not it!</em>

Let's look at choice B.

x^2 - 2x - 1 = 3

Subtract 3 from both sides.

x^2 - 2x - 4 = 0     <em>This is not it!</em>

Let's look at choice C.

x^2 + 2x - 1 = 3

Subtract 3 from both sides.

x^2 + 2x - 4 = 0     <em>This is it!</em>

Answer: C. x^2 + 2x - 1 = 3

8 0
3 years ago
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Leona [35]

Answer:

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Step-by-step explanation:

wa

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zvonat [6]

Answer:

$11.5

Step-by-step explanation:

Add all of them together

8 0
3 years ago
Meagan needs to paint the outside of a box
Arlecino [84]

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