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HACTEHA [7]
3 years ago
10

In simplest form, what is 13/15 - 2/5​

Mathematics
2 answers:
natima [27]3 years ago
8 0

Answer:

7/15

Step-by-step explanation:

turn 2/5 to have 15 as the denominator (6/15)

then do 13/15-6/15

answer is 7/15

Kazeer [188]3 years ago
3 0

Answer:It is 7/5

Step-by-step explanation:

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A falling object travels a distance given by the formula d=3t+5t2, where d is measured in feet and t is measured in seconds. How
Romashka-Z-Leto [24]

Answer:

<em>4.52secs</em>

Step-by-step explanation:

Given the height of a falling object expressed as;

d=3t+5t^2

If the object travel 84 feet, we are to find the time t it takes to travel. On substituting;

84 = 3t+5t^2

3t+5t^2 - 84 = 0

t = -5±√25-4(3)(-84)/2(3)

t = -5±√25+1008/6

t = -5±32.14/6

t = -5+32.14/6

t = 27.14/6

<em>t = 4.52 secs</em>

<em>Hence it will take 4.52secs for the object to travel 84feet</em>

8 0
2 years ago
Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?
abruzzese [7]
The equation should be 7x^2 -x-9=0
4 0
3 years ago
Read 2 more answers
Given f (x ) = x^2 + 3x + 2 and g (x ) = x + 1, perform the indicated operations.
Nana76 [90]

Answer:

(i) (f - g)(x) = x² + 2·x + 1

(ii) (f + g)(x) = x² + 4·x + 3

(iii) (f·g)(x) = x³ + 4·x² + 5·x + 2

Step-by-step explanation:

The given functions are;

f(x) = x² + 3·x + 2

g(x) = x + 1

(i) (f - g)(x) = f(x) - g(x)

∴ (f - g)(x) = x² + 3·x + 2 - (x + 1) = x² + 3·x + 2 - x - 1 = x² + 2·x + 1

(f - g)(x) = x² + 2·x + 1

(ii) (f + g)(x) = f(x) + g(x)

∴ (f + g)(x) = x² + 3·x + 2 + (x + 1) = x² + 3·x + 2 + x + 1 = x² + 4·x + 3

(f + g)(x) = x² + 4·x + 3

(iii) (f·g)(x) = f(x) × g(x)

∴ (f·g)(x) = (x² + 3·x + 2) × (x + 1) = x³ + 3·x² + 2·x + x² + 3·x + 2 = x³ + 4·x² + 5·x + 2

(f·g)(x) = x³ + 4·x² + 5·x + 2

7 0
3 years ago
Solve for x. Show your work.<br><br> 34x-5 = (1/27) 2x+10
Ilia_Sergeevich [38]

Answer:The answer in a fraction is 405/916 and the decimal form is 0.44213973

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Step-by-step explanation:

6 0
2 years ago
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More than one unknown in a word problem can be represented in terms of the same variable assigned to first unknown. true of fals
Sergeeva-Olga [200]
This is clearly false as it will just mess up the question.
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3 years ago
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