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dlinn [17]
2 years ago
8

Find the sum of 2/9+3/5​

Mathematics
1 answer:
LUCKY_DIMON [66]2 years ago
7 0

Answer:

37/45

Step-by-step explanation:

Find the least common denominator, in this case, it would be 45

2/9 (multiply both the numerator and denominator by 5) = 10/45

3/5 (multiply both the numerator and denominator by 9) = 27/45

10/45 + 27/45 = 37/45

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After being rearranged and simplified, which of the following equations could be solved using the quadratic formula?
Alecsey [184]

For this case we must indicate which of the equations shown can be solved using the quadratic formula.

By definition, the quadratic formula is applied to equations of the second degree, of the form:

ax ^ 2+ bx+ c = 0

Option A:

2x ^ 2-3x +10 = 2x + 21

Rewriting we have:

2x ^ 2-3x-2x+ 10-21 = 0\\2x ^ 2-5x-11 = 0

This equation can be solved using the quadratic formula

Option B:

2x ^ 2-6x-7 = 2x ^ 2

Rewriting we have:

2x ^ 2-2x ^ 2-6x-7 = 0\\-6x-7 = 0

It can not be solved with the quadratic formula.

Option C:

5x ^ 2 + 2x-4 = 2x ^ 2

Rewriting we have:

5x ^ 2-2x ^ 2 + 2x-4 = 0\\3x ^ 2 + 2x-4 = 0

This equation can be solved using the quadratic formula

Option D:

5x ^ 3-3x + 10 = 2x ^ 2

Rewriting we have:

5x ^ 3-2x ^ 2-3x + 10 = 0

It can not be solved with the quadratic formula.

Answer:

A and C

4 0
3 years ago
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Find the distance between the points (-2, 4) and (4, -6).<br> 0 212<br> 2/(10)<br> O2V(34)
Fittoniya [83]

Answer:

2\sqrt{34}

Step-by-step explanation:

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d = \sqrt{(4+2)^2+(-6-4)^2}

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2 years ago
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Brut [27]
It was about 17.4% 
======================================================================

% error=
actual value-estimated value 
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5 0
3 years ago
I need help I don’t get this someone help.
Andrei [34K]

Answer:

A,C,D

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Answer:

guess hes just smart

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