All categories

2 years ago

Solve using quadratic formula: 6x^2-10x-4=0

Mathematics

2 answers:

Evgen [1.6K]2 years ago

8 0

Answer:

2 and -1/3

Step-by-step explanation:

x= −b±√b2−4ac/2a

eduard2 years ago

4 0

Answer:

x= 2, -1/3

Step-by-step explanation:

idk how to explain this im sorry

use m a t h w a y for the unit you are on its really helpful :)

I hope i was able to help in some way :)

You might be interested in

What is the mode?<br> 2 -9 2 -8 -9 -9 -8 4

Llana [10]

Answer:

-9

Step-by-step explanation:

The mode is the value that appears most often in a set of numbers, and the number -9 appears the most in this set.

3 0

2 years ago

The distance around the school track is 0.25 mile. It takes Maribeth 5.1 minutes to run 2 laps around the school track. At that

BabaBlast [244]

Answer:

10.2 minutes

Step-by-step explanation:

1 lap= 1/4 mile

2 laos= 1/2 mile

5.1 x 2= 10.2 minutes

7 0

2 years ago

A realtor collects the data set given in DS 12.2.4 concerning the sizes of a random selection of newly constructed houses in a c

Yuliya22 [10]

The table is missing in the question. The table is attached below.

Solution :

Let X = appraised value

Y = area (square feet)

The regression line is given by :

$\hat y = b_0+b_1X$

$b_1=\frac{n\sum XY-\sum X \sum Y}{n \sum X^2-(\sum X)^2}$

$=\frac{15(5964990)-(2157)(33370)}{15(404799)-(2157)^2}$

$=12.3267$

$b_0=\frac{\sum Y}{n}-b_1\frac{\sum X}{n}$

$=\frac{33370}{15}-\left(12.3267 \times \frac{2157}{15}\right)$

$b_0=452.0841$

The regression line is :

$\hat Y = 452.0841+12.3267 X$

To estimate the error variance, we have:

Error variance, $\sigma =\sqrt{\frac{\sum (Y-\hat Y)^2}n-2{}}$

$=\sqrt{\frac{587682.3}{15-2}}$

$=212.6178$

8 0

2 years ago

A=1/4 and b=6.<br><br> −8ab=

podryga [215]

Answer:

When $a=\frac{1}{4}$ and $b=6$ :

$-8ab=-12$

Step-by-step explanation:

-8ab can be seen as -8×a×b. Insert the given values:

$-8*\frac{1}{4} *6$

Simplify multiplication from left to right:

$-8*\frac{1}{4} \\\\\frac{-8}{1} *\frac{1}{4} =\frac{-8}{4} =-2$

Insert and solve:

$-2*6=-12$

:Done

3 0

2 years ago

Which line has a slope of 2 and please tell me how to figure it out on my own

Yakvenalex [24]

Lines b and c
they both go up 2 and over 1 (rise over run is slope)

3 0

2 years ago