All categories

3 years ago

9x^2+ 8x + 3 = 0 solve using quadratic formula

Mathematics

1 answer:

pav-90 [236]3 years ago

3 0

18x + 8x = -3
26x = -3
x = -3/26

You might be interested in

I need help with number 12

mestny [16]

(r - s)³ + r²
= (-3 - (-4))³ + (-3)²
= (-3 + 4)³ + 9
= 1³ + 9
= 1 + 9
= 10

6 0

3 years ago

Nicole bought a $3,200 computer on the installment plan. She made a $300 down payment, and

marishachu [46]

Answer:

3,200??

Step-by-step explanation:

It asked at the end what the total amount paid was but it says it right at the top. "Nicole bought a $3,200 computer...")

7 0

3 years ago

C + d - ___ = c<br><br> i dont really get this

madam [21]

Answer:

c + d - d = c

Step-by-step explanation:

c = c

d - d = 0

c + 0 = c

c = c

3 0

3 years ago

Read 2 more answers

HELP ASAP PLEASE!!! 20 POINTS!!

Kobotan [32]

Answer: $S_{12}=399.90$

Step-by-step explanation:

You know that the formula to find the sum of a finite geometric series is:

$S_n=\frac{a_1(1-r^n)}{1-r}$

Where $n$ is the number of terms, $a_1$ is the first term and $r$ is the common ratio ( $r\neq 1$ ).

The steps to find the sum of the first 12 terms of the given geometric serie, are:

1. Find the common ratio "r". By definition:

$r=\frac{a_2}{a_1}$

Then:

$r=\frac{100}{200}\\\\r=\frac{1}{2}$

2. Finally, knowing that:

$a_1=200\\\\n=12$

You must substitute values into the formula.

Then you get:

$S_{12}=\frac{200(1-(\frac{1}{2})^{12})}{1-\frac{1}{2}}\\\\S_{12}=399.90$

6 0

3 years ago

Write a syarem of linear equations that defines the verbal problem, and then answer the question.

tresset_1 [31]

Answer:

40,000 ft

Step-by-step explanation:

The area of a rectangle is weight*length, and the perimeter is the sum og the four sides, which are 2 lengths sides ans 2 width sides, so:

area = w*l

perimeter = 2w + 2l

If the perimeter is 1000 ft:

2w + 2l = 1000

Also, the length is 300 ft more than width, so:

l = 300 +w

So, our system is:

2w + 2l = 1000 (equation 1)

l =300 + w (equation 2)

Son, we can solve it by replacing equation 2 in equation 1:

2w + 2(300 +w) = 2w + 600 + 2w = 4w + 600 = 1000

Now, subtract 600 in both sides:

4w + 600 - 600 = 1000 - 600

4w = 400

Divide both sides by 4:

4w/4 = 400/4

w = 100

Lets replace this w value in equation 2 to find l:

l = 300 + 100 = 400, so l=400

Finally we can find the area using the area formula:

area = 400*100 = 40,000 ft2

So, the area is 40,000 ft2

7 0

3 years ago