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2 years ago

Please help me ( show ur work it’s multiple choice ):)

Mathematics

1 answer:

GaryK [48]2 years ago

7 0

B=29.4 !!!!!!!! this how i do it

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What is the value of n so that the expression x^2 + 12x + n is a perfect square trinomial? (1 point)?

Rama09 [41]

X^2 + 12x + n
x^2 + 12x + (12/2)^2
x^2 + 12x + 6^2
n = 36
(x + 6)^2 will give you a perfect square.

6 0

3 years ago

Indicate the general rule for the arithmetic sequence with a3 = -12 and a8 = -37

Mandarinka [93]

Answer:

The general rule is $a_n = -2 - 5(n-1)$

Step-by-step explanation:

Arithmetic sequence:

In an arithmetic sequence, the difference between consecutive terms is always the same, and this difference is called common difference.

The general rule of an arithmetic sequence is given by:

$a_{n} = a_1 + (n-1)d$

In which $a_1$ is the first term and d is the common difference.

We can also find the nth term as a function of a term m, using:

$a_n = a_m + (n-m)d$

a3 = -12 and a8 = -37

First we find the common difference. So

$a_n = a_m + (n-m)d$

$a_8 = a_3 + (8-3)d$

$-37 = -12 + 5d$

$5d = -25$

$d = -\frac{25}{5}$

$d = -5$

$a_n = a_1 - 5(n-1)$

Finding the first term:

$a_n = a_1 - 5(n-1)$

Since $a_3 = -12$

$a_n = a_1 - 5(n-1)$

$a_3 = a_1 - 5(3-1)$

$a_1 = a_3 + 10 = -12 + 10 = -2$

So the general rule is:

$a_n = a_1 - 5(n-1)$

$a_n = -2 - 5(n-1)$

6 0

2 years ago

What is the answer to this question 29/-2 simplify

mixer [17]

Answer:

-14.5

Step-by-step explanation:

-14.5

8 0

2 years ago

Does anyone know this :/ ?

choli [55]

Angles 7, 6, 3, 2 are all vertical angles, which mean they are congruent (equal)

so if angle 7 is 115° so are 6, 3, and 2

so the measure of angle 2 is 115°

7 0

3 years ago

Read 2 more answers

Tia’s tent is in the form of a triangular prism as shown below if Tia plans to waterproof the tent excluding the pace what is th

Marat540 [252]

just multiple it all together

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3 years ago