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2 years ago

What is the answer for 2 3/7 + 3 2/7 in a mixed fraction

Mathematics

2 answers:

S_A_V [24]2 years ago

5 0

Answer: 5 5/7

Step-by-step explanation:

3+2 = 5

You then look at you fractions. They both have the same denominator so we go ahead and add the two together.

3/7 + 2/7 = 5/7

Your final answer is 5 5/7

Anarel [89]2 years ago

3 0

Answer:

5 5/7

Step-by-step explanation:

I know this because 2/7+3/7 is 5/7 and 3+2 is 5 and add 5 to 5/7 and you get 5 5/7

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Step-by-step explanation:

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2 years ago

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2 years ago

The sum of twenty one and five times a number f is 61

lisov135 [29]

5f+21=61 first you subtract 21 from 61 which leaves you with 40.
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2 years ago

Write a simplified expression that represents the perimeter of an irregular quadrilateral with some de lengths (2 1/4t - 5) (4t

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Answer:

$Perimeter = \frac{39t-4}{4}$

Step-by-step explanation:

Given

$Lengths: (2\frac{1}{4}t - 5), (4t + 3), (1/2t - 1), (3t + 2)$

Required

Determine the perimeter

The perimeter is calculated as the sum of the lengths of the irregular shape.

i.e.

$Perimeter = (2\frac{1}{4}t - 5) + (4t + 3) + (1/2t - 1) + (3t + 2)$

Remove brackets

$Perimeter = 2\frac{1}{4}t - 5 + 4t + 3 + 1/2t - 1 + 3t + 2$

Collect Like Terms

$Perimeter = 2\frac{1}{4}t +4t + 1/2t + 3t - 5 + 3 - 1 + 2$

$Perimeter = 2\frac{1}{4}t +4t + 1/2t + 3t -1$

Convert mixed number to improper fraction.

$Perimeter = \frac{9}{4}t +4t + 1/2t + 3t -1$

Take LCM

$Perimeter = \frac{9t + 16t + 2t + 12t}{4} -1$

$Perimeter = \frac{39t}{4} -1$

Take LCM

$Perimeter = \frac{39t-4}{4}$ <em>--- The perimeter of the shape</em>

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2 years ago

What do you know about a quadratic equation that has the following points (2, 0) and (10, 0)?

Agata [3.3K]

Answer:

C. The x-coordinate of the vertex must be 6

Step-by-step explanation:

The parabola intercepts the x-axis when y = 0.

Therefore, if the quadratic equation has the points (2, 0) and (10, 0) then the x-intercepts or "zeros" are x = 2 and x = 10.

The x-coordinate of the vertex is the midpoint of the zeros.

$\sf \implies midpoint=\dfrac{2+10}{2}=6$

Therefore, the solution is option C.

<u>Additional Information</u>

The leading coefficient of a quadratic tells us if the parabola opens upwards or downwards:

Positive leading coefficient = parabola opens upwards
Negative leading coefficient = parabola opens downwards

We have not been given this information and so therefore cannot determine the way in which it opens.

As we do not know the way in which way the parabola opens, we cannot determine if the parabola will have a negative or positive y-intercept.

We have not been given the full quadratic equation, and so we cannot determine if the parabola is wider (or narrower) than the parent function.

3 0

2 years ago

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