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3 years ago

PLEASE HELP!!!!!!!!!!!!!!!!!!!! SHOW WORK!!!!!!!!!!!!!!!!!!!!!!!!

2 answers:

7 0

If a^2+b^2=c^2 then 10^2+12^2=244 then the square root of 244 is about 15.6. So Sara's house is 15.6 miles away from her friend's house

torisob [31]3 years ago

3 0

It would be the same distance...She could drive 12 miles west then 10 north or take the same route she came back...Brainliest?....

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Find the simple interest paid to the nearest cent for each loan, interest rate, and time. $500, 12%, 18 months

iris [78.8K]

Answer: The interest is $60

Step-by-step explanation:

500*112%=$560

560/18=$31.11

$60 in interest is paid, or an additional $3.33 a month (Bringing the monthly loan payment to a grand total of $31.11)

4 0

3 years ago

Read 2 more answers

It takes a train 60 seconds to completely drive through a bridge of 1260 m, and 90 seconds to completely drive through a tunnel

Olegator [25]

The length of train is 120 meters

The speed of train is 25 meter per second

Solution:

The speed is given by formula:

$speed = \frac{distance}{time}$

Given that,

It takes a train 60 seconds to completely drive through a bridge of 1260 m

And 90 seconds to completely drive through a tunnel of 2010 m

Let the length of the train be "x"

The total distance travelled by the train across the bridge is given by:

total distance = x + 1260 + x = 2x + 1260

[ here we use x + x to represent that train completely drives through bridge ]

The time taken is given as 60 seconds

Therefore, the speed is given as:

$speed = \frac{2x+ 1260}{60}$

The total distance travelled by the train through the tunnel is given by:

total distance = x + 2010 + x = 2x + 2010

The time taken is given as 90 seconds

Therefore, the speed is given as:

$speed = \frac{2x+ 2010}{90}$

The speed of the train was the same in both cases.

Equate both speeds

$\frac{2x+ 1260}{60} = \frac{2x+ 2010}{90}$

$\frac{x+630}{30} = \frac{x+1005}{45}$

$45(x+630) = 30(x+1005)\\\\45x + 28350 = 30x + 30150\\\\45x - 30x = 30150 - 28350\\\\15x = 1800\\\\x = 120$

Thus length of train is 120 meters

Find the speed of train:

$speed = \frac{2x+ 1260}{60}\\\\speed = \frac{2(120) + 1260)}{60}\\\\speed = 25$

Thus speed of train is 25 meter per second

5 0

3 years ago

Nick has a box of ornaments that he uses to

Lelu [443]

Answer:

Step-by-step explanation:

6 + 6 + 6 = 18

If this helps, please give me branliest! I need it.

7 0

3 years ago

The slope of line m is 7/8. If n⊥m, what is the slope of line n?

Citrus2011 [14]

Hello!

Slopes of perpendicular lines are opposite reciprocals of each other, which the slope of line perpendicular to a line with a slope of 7/8 is -8/7.

Answer:
D. -8/7

Hope this helps!

8 0

3 years ago

A. > B. < C. = D. none of the above

earnstyle [38]

Answer:

$3.14 \times 10 ^{3} < 2.6 \times 10^{3}$

Step-by-step explanation:

$3.14 \times 10 ^{3}$

$3140$

$2.6 \times 10 ^{4}$

$26000$

7 0

2 years ago