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cluponka [151]
3 years ago
15

Which is the difference of 21 1/4 - 18 2/4? A:2 1/4. B:2 2/4. C:2 3/4. D:3 1/4.

Mathematics
1 answer:
seropon [69]3 years ago
3 0

Answer:

2 3/4 C

Step-by-step explanation:

(21+\frac{1}{4})-(18+\frac{2}{4})\\=21-18+\frac{1}{4} -\frac{2}{4} \\=3-\frac{1}{4} \\=\frac{12-1}{4} \\=\frac{11}{4} \\=2\frac{3}{4} \\or\\21\frac{1}{4} -18\frac{2}{4} \\=\frac{85}{4} -\frac{74}{4} \\=\frac{85-74}{4} \\=\frac{11}{4} \\=2\frac{3}{4}

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3/2 x 1/4 x 5/3 = v.
jekas [21]

Answer: 5/8 or 0.625

Step-by-step explanation:

3/2x1/4= 3/8

Then, 3/8x5/3= 15/24

15/24 simplified equals 5/8. 5/8 in decimal form is 0.625

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3 years ago
Please answer!
Alisiya [41]

Answer:

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Step-by-step explanation:

8 0
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Find the product of all positive integer values of $c$ such that $3x^2+7x+c=0$ has two real roots. I will award a lot of points
Agata [3.3K]

Answer:  24

<u>Step-by-step explanation:</u>

Let's find one solution:

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First, let's find c so that it has REAL ROOTS.

⇒ Discriminant (b² - 4ac) ≥ 0

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Example: c = 4

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(3x + 4)(x + 1) = 0

x = -4/3, x = -1         Real Roots!

<em>You need to use Quadratic Formula to solve for c = {1, 2, 3}</em>

<em />

Valid solutions for c are: {1, 2, 3, 4)

Their product is: 1 x 2 x 3 x 4 = 24

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3 years ago
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Mrac [35]

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False

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3 years ago
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