All categories

3 years ago

.2 Simplify the expression -9 + 2.5y - 0.7y + 1 + 6.4y^2

Mathematics

1 answer:

masya89 [10]3 years ago

6 0

Answer:

6.4y^(2)+1.8y-8

Step-by-step explanation:

got it right edge 2020

You might be interested in

-1/8 x 5 x 2/3 equals what

ki77a [65]

-0.416 (6 repeatees forever) in decimal form

8 0

3 years ago

Complete the expression that represents the table<br><br> Y=___x

bezimeni [28]

Answer:

The equation that represents the table is:

$y=\frac{9}{2}x$

Step-by-step explanation:

Taking two points from the table

(2, 9)

(4, 18)

$\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(2,\:9\right),\:\left(x_2,\:y_2\right)=\left(4,\:18\right)$

$m=\frac{18-9}{4-2}$

$m=\frac{9}{2}$

As the slope-intercept form is

$\:y=mx+b$

Plugging (2, 9) to find the y-intercept 'b'

$9=\frac{9}{2}\left(2\right)+b$

$\mathrm{Switch\:sides}$

$\frac{9}{2}\left(2\right)+b=9$

$\mathrm{Remove\:parentheses}:\quad \left(a\right)=a$

$\frac{9}{2}\cdot \:2+b=9$

$9+b=9$

$b=0$

so the equation becomes

$\:y=mx+b$

$m=\frac{9}{2}$

$b=0$

$y=\frac{9}{2}\left(x\right)+0$

$y=\frac{9}{2}x$

Therefore, the equation that represents the table is:

$y=\frac{9}{2}x$

The graph of the equation is also attached below.

6 0

3 years ago

PLZ HELP ME

hoa [83]

Answer: false

Step-by-step explanation:

false because 19 - 6 =13 and 13 +12 = 25 and 25 - 18 = 7

8 0

3 years ago

Many areas of Northern California depend on the snowpack of the Sierra Nevada Mountains for their water supply. If 300 cubic cen

amm1812

Answer:

Option B is correct.

Step-by-step explanation:

300 cm^3 of snow melts into 33 cm^3 water. We need to find how much water is produced if 600 cm^3 of snow is melt.

Solving using unitary method:

300 cm^3 of snow melts into water = 33 cm^3

1 cm^3 of snow melts into water = 33/300

600 cm^3 of snow melts into water = 33/300 *600

= 66 cm^3

So, Option B is correct.

5 0

3 years ago

Please please please help

snow_lady [41]

9514 1404 393

Answer:

a) max height: 210.25 feet

b) time: 7 seconds

Step-by-step explanation:

Since this is about graphing quadratics, it seems appropriate to use a graph produced by a graphing calculator. It shows ...

maximum height: 210.25 feet

time to hit the ground: 7 seconds

5 0

3 years ago