All categories

2 years ago

A train 120cm can pass through a bridge while traveling at 80m/s in 10 s.how many seconds would a train 90m long take if i

Mathematics

1 answer:

alisha [4.7K]2 years ago

5 0

it will take 3600 seconds....

How ?

Answer--

multiply the time value by 60

hope it helps

You might be interested in

If x^2 = 50, what is the value of x?

SIZIF [17.4K]

X^2 = 50

Square both sides

x= √50

x= (√25)(√2)

x = 5√2

Final answer: x = 5√2 and since x is to the power of 2 you can have x = + or - <span>x = 5√2</span>

5 0

3 years ago

Read 2 more answers

The value V of a certain automobile that is t years old can be modeled by V(t) = 14,651(0.81). According to the model, when will

lakkis [162]

Answer:

a) The car will be worth $8000 after 2.9 years.

b) The car will be worth $6000 after 4.2 years.

c) The car will be worth $1000 after 12.7 years.

Step-by-step explanation:

The value of the car after t years is given by:

$V(t) = 14651(0.81)^{t}$

According to the model, when will the car be worth V(t)?

We have to find t for the given value of V(t). So

$V(t) = 14651(0.81)^{t}$

$(0.81)^t = \frac{V(t)}{14651}$

$\log{(0.81)^{t}} = \log{(\frac{V(t)}{14651})}$

$t\log{(0.81)} = \log{(\frac{V(t)}{14651})}$

$t = \frac{\log{(\frac{V(t)}{14651})}}{\log{0.81}}$

(a) $8000

V(t) = 8000

$t = \frac{\log{(\frac{8000}{14651})}}{\log{0.81}} = 2.9$

The car will be worth $8000 after 2.9 years.

(b) $6000

V(t) = 6000

$t = \frac{\log{(\frac{6000}{14651})}}{\log{0.81}} = 4.2$

The car will be worth $6000 after 4.2 years.

(c) $1000

V(t) = 1000

$t = \frac{\log{(\frac{1000}{14651})}}{\log{0.81}} = 12.7$

The car will be worth $1000 after 12.7 years.

5 0

2 years ago

Instructions: Find the value of the trigonometric ratio. Make sure to simplify the fraction if needed.

harina [27]

Check the picture below.

4 0

1 year ago

Mrs. Jackson earned a 500 bonus for signing a one-year contract to work as a nurse. Her salary is 22 per hour. If her first week

jekas [21]

Ok so your first step is to make this an equation
she gets paid x amount per hour and she works for 22 hours
so 22x plus her bonus
22x + 500 =1204
so now solve the equation
subtract both sides by 500
22x +500 =1204
-500 = -500
to get
22x = 704
now divide both sides by 22
x = 32
mrs jackson worked 32 hours to get her pay check

7 0

2 years ago

Simplify. -y -7x + 7y<br> The simplified expression is ___y - ____x.

goblinko [34]

Answer:

the simplified expression is: 6y-7x

Step-by-step explanation:

-y+7y= 6y

-7x

= 6y-7x

8 0

2 years ago