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Genrish500 [490]

3 years ago

7

Which expression is the radical form of 1/5b

1 answer:

dimaraw [331]3 years ago

3 0

Answer:

1st option, ⁵√b

Step-by-step explanation:

b⅕

= ⁵√b (radical form)

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A plane traveled 240 miles. The trip was with the wind. It took 3 hours. The trip back was into the wind. The trip back took 6 h

sveta [45]

Answer:

Plane speed is 60 miles/hour

Wind speed is 20 miles/hour

Step-by-step explanation:

Lets suppose the speed of the plane in still air is s and speed of the wind is w and since speed in the formula below equals speed of the plane plus the wind's speed so speed=s+w for this journey with the wind

$Speed=\frac{Distance}{Time}$

$Distance=Speed*Time$

For the first journey the trip with the wind:

$Distance=Speed*Time\\240=(s+w)(3)\\240/3=s+w\\s+w=80$

Here we got our first equation for the second equation we use the information from the second trip which was into the wind. Which means the speed here would be speed=s-w

$Distance=Speed*Time\\240=(s-w)*6\\240/6=s-w\\s-w=40$

so now we got our two equations adding both equations would result into the following:

$s+w=80\\s-w=40\\2s=120\\s=60$

so speed of the plane is 60 miles/hour put the value of s in any our two equations to calculate the wind speed, lets take the first equation:

$s+w=80\\60+w=80\\w=80-60\\w=20$

so the wind speed is 20 miles/hour

8 0

3 years ago

I NEED HELP PLEASE I'VE BEEN STUCK FOR 2 DAYS

sweet [91]

Answer:

Step-by-step explanation:

14 x 8 = 112

5 0

3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPp

love history [14]

Answer:

<u>36 in²</u>

Step-by-step explanation:

<u>Area of the figure</u>

Area (small rectangle) left + Area (big rectangle) right
3 x (6 - 4) + 5 x 6
3 x 2 + 30
6 + 30
<u>36 in²</u>

3 0

3 years ago

Read 2 more answers

const2013 [10]

Answer:

y = -1/3 + 7

Step-by-step explanation:

3 0

3 years ago

The upper-left coordinates on a rectangle are (-4,4), and the upper-right coordinates are (4,4).The rectangle has an area of 8 s

maw [93]

Answer:

Then the coordinate of point $C$ is $(4,3)$ , and the coordinate of point $D$ is $(-4,3)$ .

Step-by-step explanation:

Given that,

The upper-left coordinate on a rectangle is $(-4,4)$ .

The upper-right coordinate on a rectangle is $(4,4)$ .

Area of rectangle is $8$ square unit.

Let, $ABCD$ is a rectangle.

The coordinate of point $A$ is $(-4,4)$ and the coordinate of point $B$ is $(4,4)$ .

Diagram of rectangle $ABCD$ is shown below:

Now,

$AB=$ $\sqrt{(4+4)^{2}+(4-4)^{2} }$

$=\sqrt{(64+0)}$

$=\sqrt{64}$

$= 8\ unit$

∵Area of rectangle = Length $\times$ Breadth

$8$ square unit = $8\ unit$ $\times Breadth$

∴ Breadth $=1\ unit$

$BC=\sqrt{(4-4)^{2}+(y-4)^{2} }$

$=\sqrt{(y-4)^{2} }$

⇒ $1$ $=\sqrt{(y-4)^{2} }$

squaring both sides, we get

⇒ $1=(y-4)^{2}$

⇒ $(y-4)$ = ± $1$

∴ $y=3$

Then the coordinate of point $C$ is $(4,3)$ , and the coordinate of point $D$ is $(-4,3)$ .

8 0

4 years ago

Read 2 more answers