Ask question

Ask question

All categories

3 years ago

12

A mile is 5280 feet.

1 answer:

alekssr [168]3 years ago

7 0

Answer:

10408 ft

Step-by-step explanation:

convert miles to ft

4 miles/hr * 5280 ft/ mile = 21120 ft/hr

convert hr to min

21120 ft/hr * 1hr/60 min = 352 ft/ min

multiply by 40 minutes

352 ft/min * 40 min =14080 ft

You might be interested in

What is the scale factor of ABC to DEF?

pochemuha

Answer:

A. 1

Step-by-step explanation:

<em>Scale Factor:</em>

<em>The scale factor is the number you multiply the length of a side of the first triangle to get the length of the corresponding side of the other triangle.</em>

Every side that measures 5 in triangle ABC has a corresponding side in triangle DEF that also measures 5. In this case 5 * 1 = 5, so the scale factor is 1.

Answer: A. 1

5 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP QUESTIONS ARE IN PICTURE

ArbitrLikvidat [17]

Answer:

1. Last option

2. third option

Step-by-step explanation:

1. Each term is formed by multiplying the previous one by 3

so its 729, 2187

2. Working from right to left we multiply by 5 so its 500.

5 0

3 years ago

The diameter of the bottom of a lamp shade is twice the diameter of the top of the lamp shade. The top of the lamp shade has a 9

GarryVolchara [31]

Answer:

see explanation

Step-by-step explanation:

The circumference (C) is calculated as

C = πd ← d is the diameter

diameter = 2 × 9 = 18 in ( twice the top diameter ), thus

C = 18π in ← exact value ≈ 56.55 in ( to 2 dec. places )

5 0

3 years ago

Calculate the arithmetic sequence in which a9=17 and the common difference is d=-2.1

jek_recluse [69]

Answer:

$S_{31}=71.3$

Step-by-step explanation:

The nth term of an arithmetic sequence is given by the formula,

$U_n=a_1+(n-1)d$

We were given that the 9th term is $17$ .

$\Rightarrow 17=a_1+(9-1)(-2.1)$

$\Rightarrow 17=a_1+(8)\times(-2.1)$

$\Rightarrow 17=a_1-\frac{84}{5}$

$\Rightarrow 17+\frac{84}{5}=a_1$

$\Rightarrow a_1=\frac{169}{5}$

The sum of the first n-terms is given by the formula,

$S_n=\frac{n}{2}(2a_1+(n-1)d)$

To find $S_{31}$ , we substitute $n=31$ , $a_1=\frac{169}{5}$ and $d=-2.1$ .

$\Rightarrow S_{31}=\frac{31}{2}(2(\frac{169}{5}+(31-1)(-2.1))$

$\Rightarrow S_{31}=\frac{31}{2}(2(\frac{169}{5}+(30)(-2.1))$

$\Rightarrow S_{31}=\frac{31}{2}(\frac{23}{5})$

$\Rightarrow S_{31}=\frac{713}{10}$

$\Rightarrow S_{31}=71.3$

The correct answer is D

8 0

3 years ago

Read 2 more answers

an athlete completes a race in 55.72 seconds how many times greater is the digit in the tens place than the digit in the ones pl

Inessa05 [86]

7 is 5 greater than the 2

7 0

3 years ago

Read 2 more answers