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Anon25 [30]
3 years ago
15

|2x+5|=9 how do i solve this

Mathematics
1 answer:
GalinKa [24]3 years ago
7 0
So pretty much you have to have the x alone. so u will have to -5 on both sides. then it will be 2x=4. so u will divide 2 on both sides. so u will get x=2
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Please answer with clear instructions so that i can apply this to other questions.
kvv77 [185]

Answer:

10 terms

Step-by-step explanation:

equate the sum formula to 55 and solve for n

\frac{1}{2} n(n + 1) = 55 ( multiply both sides by 2 to clear the fraction )

n(n + 1) = 110 ← distribute parenthesis on left side

n² + n = 110 ( subtract 110 from both sides )

n² + n - 110 = 0 ← in standard form

Consider the factors of the constant term (- 110) which sum to give the coefficient of the n- term (+ 1)

the factors are + 11 and - 10 , since

11 × - 10 = - 110 and 11 - 10 = + 1 , then

(n + 11)(n - 10) = 0 ← in factored form

equate each factor to zero and solve for n

n + 11 = 0 ⇒ n = - 11

n - 10 = 0 ⇒ n = 10

However, n > 0 , then n = 10

number of terms which sum to 55 is 10

7 0
2 years ago
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ratelena [41]

Answer:

3 + 10.8 is : rational.

Step-by-step explanation:

the reason for this is because it is neither a variable, pi, or numbers like square root 2.

4 0
2 years ago
Write an equation for the line that is parallel to the given line and passes through the given point
Evgesh-ka [11]

Answer:

y = 2x + 2

Step-by-step explanation:

The equation ofa line in slope- intercept form is

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with m = 2

Parallel lines have equal slopes , thus

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8 = 6 + c ⇒ c = 8 - 6 = 2

y = 2x + 2 ← equation of parallel line

4 0
3 years ago
The temperature in the core of the sun is 27,000,000 •F
AlekseyPX

Answer:

true

Step-by-step explanation:

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6 0
3 years ago
If y varies directly as x, find the constant of variation if y= 34 when x= 2
bearhunter [10]
The answer is C

y=kx. where k is a constant
sub y=34,x=2
2k=34
k=17
7 0
2 years ago
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