Select all that apply.

sladkih [1.3K]

20 cm^2
Imagine two of the as squares and then have them

8 0

3 years ago

A town sits at point (5,1) on a map. From the tallest building in the town, you can see objects up to 7 miles away. If each unit

Vlada [557]

Answer:

The distance between the tallest building and the statue is 5 miles, so as the statue is inside the range of 7 miles, it can be seen from the tallest building.

Step-by-step explanation:

To solve the problem we need to know the distance between the tallest building in the town and the statue.

This distance can be calculated with the formula of the distance between two points:

d = sqrt(dx^2 + dy^2), where dx is the difference in x-coordinate between the points and dy is the difference in y-coordinate between the points.

So, the distance between these points is:

dx = 5-2 = 3

dy = 1-5 = -4

d = sqrt(3^2 + (-4)^2) = sqrt(9+16) = 5 miles

The distance is 5 miles, so as it is inside the range of 7 miles, the statue can be seen from this point.

3 0

3 years ago

PLEASE HELP!!! PLEASE!!!

irina [24]

Answer:

Average speed = $\frac{(x+y)}{2}$ miles per hour

Step-by-step explanation:

Formula to calculate the average speed of an object is,

Average speed = $\frac{\text{Total distance covered}}{\text{Time taken to cover this distance}}$

If I travel with the speed of x mph for t hours,

Total distance covered = Speed × Time

= $x\times t$

= $xt$ miles

Similarly, if I travel with the speed y mph for t hours,

Total distance covered = $yt$ miles

Total distance covered by me = $(xt+yt)$ miles

Total time taken to cover this distance = $t+t$

= $2t$ hours

Therefore, expression for the average speed will be,

Average speed = $\frac{xt+yt}{2t}$

= $\frac{(x+y)t}{2t}$

= $\frac{x+y}{2}$ miles per hour

7 0

3 years ago

I need help with 10 please

Mrrafil [7]

Answer:

254 $cm^{2}$

Step-by-step explanation:

Surface Area = 2Lh+2Lw+2wh

L=4 cm

h=9 cm

w=7 cm

Surface Area = 2(4)(9)+2(4)(7)+2(7)(9)

Surface Area = (72+ 56 +126) $cm^{2}$

Surface Area =254 $cm^{2}$

6 0

4 years ago

Give the equation of the line that is perpendicular to y= (1/2)x -1 and passes through the point (3,4)

nexus9112 [7]

Answer: y = -2x + 10

Step-by-step explanation:

Two lines are said to be perpendicular if the product of their slope = -1, that is , if $m_{1}$ is the slope of the first line and $m_{2}$ is the slope of the second line , if the two lines are perpendicular , then $m_{1}$ $m_{2}$ = -1