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2 years ago

three consecutive intergers have a sum of 30. Which equation can be used to find x, the value of the smallest of three numbers

Mathematics

1 answer:

prohojiy [21]2 years ago

8 0

Answer:

x+ x+1 + x+2 = 30

3x+3 =30

Step-by-step explanation:

Let x be the smallest integer

x+1 be the next smallest

x+2 be the third

x+ x+1 + x+2 = 30

Combine like terms

3x+3 =30

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artcher [175]

Answer:

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2 years ago

88.4×10^3 in standard notation

scoray [572]

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2 years ago

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Answer:

D, E.

Step-by-step explanation:

Simplify the expression inside the parentheses:

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2 years ago

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attashe74 [19]

Answer:

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Step-by-step explanation:

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1 year ago

Read 2 more answers

Use Newton's method with initial approximation x1 = −2 to find x2, the second approximation to the root of the equation x3 + x +

nevsk [136]

Answer:

$x_2 \approx -1.769$

Step-by-step explanation:

Let $f(x)=x^3+x+7$

So $f'(x)=3x^2+1$

$x_{n+1}=x_n-\frac{f(x_n)}{f'(x_n)}$

Let $x_1=-2$

We are going to find $x_2$

So we are evaluating $-2-\frac{f(-2)}{f'(-2)}$

First step find f(-2)

Second step find f'(-2)

Third step plug in those values and apply PEMDAS!

$f(-2)=(-2)^3+(-2)+7=-8-2+7=-10+7=-3$

$f'(-2)=3(-2)^2+1=3(4)+1=12+1=13$

$x_2=-2-\frac{-3}{13} \\\\ x_2=\frac{-26+3}{13} \\\\ x_2=\frac{-23}{13} \\\\ x_2 \approx -1.769$

5 0

2 years ago