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3 years ago

S=a+(n-1)d,solve for d

Mathematics

1 answer:

Vinvika [58]3 years ago

5 0

Answer:\frac{s-a}{n-1}

Step-by-step explanation:

formula, s=a+(n-1)d

1. get rid of the a on d's side by subtracting it from both sides.

s=a+(n-1)d becomes s-a=(n-1)d

2. get rid of (n-1) by dividing it from both sides. s-a=(n-1)d becomes

\frac{s-a}{n-1} =d

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Solve using break apart strategy 132+42=

Anon25 [30]

130+40=170
2+2=4
170+4=174

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3 years ago

Mathswatch: Factorise x^2-42^2

marta [7]

Answer:

$x^{2} -1764$

Step-by-step explanation:

1) Evaluate the exponent:

$x^{2} -1*42^2\\x^{2} -1*1764$

2) Multiply the numbers:

$x^{2} -1*1764\\x^{2} -1764$

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3 years ago

Please help asap! Will give brainliest! Please read the question then answer correctly! No guessing.

frutty [35]

Answer:

(x - 5) (x - 7)

Step-by-step explanation:

To factor this trinomial, you must split the middle term (-12x) into two terms that can be added to get -12x, and multiplied to get 35:

$x^2$ - 12x + 35

$x^2$ -7x - 5x + 35

Group:

( $x^2$ -7x) (-5x + 35)

Take out the GCF (Greatest Common Factor):

x(x - 7) -5(x - 7)

(x - 5) (x - 7)

4 0

3 years ago

Read 2 more answers

The perimeter of a rectangular garden is 4534 m. The length is 1125 m more than thrice the width. Find the length and the width

IrinaVladis [17]

Answer:

length = 1696 m

breadth = 571 m

Step-by-step explanation:

perimeter = 4534 m

let breadth be b

so length = b + 1125 m

perimeter of rectangular garden = 2(l+b)

4534 m = 2(b+1125m+b) {substituting the value}

or, 4534 m = 2(2b+1125m)

or, 4534 m = 4b + 2250 m

or, 4534 m - 2250m = 4b

or, 2284m = 4b

or, b = 2284m/4

so, b = 571m

so, l = b + 1125 m

= 571 m + 1125m

= 1696 m

3 0

3 years ago

ERROR ANALYSIS

Dennis_Churaev [7]

Answer:

I agree with cristafers work

Step-by-step explanation:

3 0

2 years ago

S=a+(n-1)d,solve for d​

S=a+(n-1)d,solve for d