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mel-nik [20]
2 years ago
9

Solve 1/2n x (n+1) =78

Mathematics
2 answers:
Leya [2.2K]2 years ago
7 0

Answer:

n=-13, n=12

Step-by-step explanation:

zavuch27 [327]2 years ago
6 0

Answer: n = 12, -13

We have to isolate the variable by dividing each side by factors that don't contain the variable.

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What is bigger the square root of 10 or 3.2​
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<h2>Answer: I think its 10 correct me if i'm wrong.</h2><h2 /><h3></h3>

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What are the domain and range of f(x) = |x + 6|?
san4es73 [151]

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Answer:

  • domain: all real numbers
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Step-by-step explanation:

The function is defined for all values of x, so its domain is all real numbers.

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  y ≥ 0

4 0
2 years ago
In a fruitsurvey 30 children choose their favorite fruit out of apples bananas and watermelon 10% shows up 30% shows bananas how
BlackZzzverrR [31]

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Step-by-step explanation:

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2 years ago
A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a​ single-strand electric
otez555 [7]

Answer:

dimension are 350 m and 350 m  and

area is 122500 m²

Step-by-step explanation:

Given data

perimeter is 700 m

to find out

the largest area and its​ dimensions

solution

we consider x and y are the sides

so area is xy

perimeter is 2x+ y = 700

so we can say y = 700 -2x

so area will be = x (700 - 2x)

area = 700x - 2x²

we take derivative here and equal to zero

dA/dt = 700x - 2x²

700 - 4x = 0

x = 700/4

x = 175

so will be

y = 700 -2x

y = 700 -2(175)

y = 350

so dimension are 350 m and 350m

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3 0
2 years ago
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Answer:

Area = 1500 cm^{2}

Step-by-step explanation:

Area= height ×(Base 1 +base 2)

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Area = 20×75

Area = 1500 cm^{2}

7 0
2 years ago
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