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3 years ago

8

Linda runs each lap in 8 minutes. She will run more than 48 minutes today. What are the possible numbers of laps she will run to

day?

1 answer:

dangina [55]3 years ago

5 0

Answer:

x > 6

Step-by-step explanation:

You will do 48(min)/8(each lap) and get 6. However, since she is running "more" than 48 minutes, it has to be everything greater than 6.

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Why are the units of area squared? How does this help us remember the formula for area of a circle?

svp [43]

Answer:

Area is a size measurement of a two-dimensional surface. Those dimensions (x and y) are perpendicular to each other, and thats why it is squared.

8 0

3 years ago

One plane can travel 20 miles per hour faster than another. One of them goes 285 miles in the same time it takes the other to go

Hatshy [7]

Answer:

$\huge\fbox{Answer ☘}$

$\bold\blue{190 \:miles/hr \:and \:170 \:miles/hr}$

Step-by-step explanation:

Let the speed of faster plane be x

therefore ,

speed of slower plane = x - 20

As the time taken is same ,

$\frac{285}{x} = \frac{255}{x - 20} \\ \\ \frac{57}{x} = \frac{51}{x - 20} \\ \\ 57(x - 20) = 51x \\ \\ 6x = 1140 \\ \\ x = 190$

therefore ,

faster plane travels at a speed of 190 miles/hr

while..

the slower plane travels at a speed = ‎ ‎ ‎ ‎ ‎ ‎( 190-20 ) miles/hr

‎ ‎ ‎ ‎ ‎‎ ‎ ‎ ‎ ‎‎ ‎=> 170 miles/hr

hope helpful~

7 0

2 years ago

a right rectangular prism has these dimensions length 1 and 1/2 units width 1/2 units height 3/4 units. How many cubes of side l

Lena [83]

Volume of rectangular prism = 1 1/3 x 5/6 x 2/3 = 4/3 x 5/6 x 2/3 = 20/27

Volume of cube = 1/6 x 1/6 x 1/6 = 1/216

Number of cubes that will pack the rectangular prism = 20/27 / 1/216 = 160

6 0

3 years ago

Explain why the equation ( x - 4 ) ^ 2 - 28 = 8 has two solutions.

KiRa [710]

It has two solutions because there is two Xs in the equation (x-4) (x-4)=36 which will get u two answers

7 0

3 years ago

In the figure above, rectangle R'S'T'Q' is a dilation of rectangle RSTQ. What is the scale factor of the dilation?

trasher [3.6K]

Answer:

A. $\frac{1}{5}$

Step-by-step explanation:

The scale factor of dilation is the ratio of the length of any of the corresponding sides of rectangle R'S'T'Q to rectangle PQRS.

R'S' = 3

RS = 15

Thus,

Scale factor = $\frac{R'S'}{RS} = \frac{3}{15}$

Simplify

Scale factor = $\frac{1}{5}$

8 0

3 years ago