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2 years ago

Please help I need the answer to this

Mathematics

2 answers:

AlekseyPX2 years ago

6 0

Answer:

Step-by-step explanation:

it says it in the problem unless theres more to it i would love to help you :)

Scrat [10]2 years ago

5 0

Answer:

Step-by-step explanation:

Substitute 2 for t in your formula

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a car left town A at 10:00 am and travelled towards town B at the average speed of 70 km/h. At the same time a truck left town B

Softa [21]

The important formula to this problem is $distance=rate(time)$ or $d=rt$

Now, the speed of the car is 70 km/h, and the speed of the truck is 50 km/h. It will take the two vehicles the same amount of time to meet since they both left at the same time. So, since distance equals rate times time, and t = time:

the distance of the car = 70t
the distance of the truck = 50t

Because they both left in opposite directions, and the towns are 420 kilometers apart, the equation for this would be

$70t+50t=420$

We now solve the equation.

$70t+50t=420 \\ 120t=420 \\ \frac{120t}{120}= \frac{420}{120} \\ t=3 \frac{1}{2}$

It will take the vehicles 3 and a half hours to meet. Since we're looking for the time, 3 and a half hours from 10:00 AM is 1:30 PM.

So, the car and the truck will pass each other at 1:30 PM.

8 0

3 years ago

How do you find the squared foot of an octagon?

Westkost [7]

Answer:

The four pieces cut off can be arranged into two squares with sides of length b feet and hence the area of the octagon is w 2 - 2 b 2 square feet. Since w = 12 feet, all that is needed is to find b. square feet which is approximately 119 square feet.

Step-by-step explanation:

5 0

2 years ago

Which number produces a rational number when added to 0.3?

Monica [59]

A rational number is an algebraic term expressed as a fraction. The fraction can also be in decimals but only if the decimal places are not repeating or not infinitely long. If they aren't, then these are called irrational numbers.

Let's try each of the choices:

A. The term 2/4 is a rational number. Now, when 0.3 or 3/10 is added to it, the sum would be 4/5 or 0.8. This is a rational number.

B. √7 is an irrational number because its exact value is 2.645751311.... Even if you add 0.3 to it, the answer would still be irrational

C. Obviously, this is an irrational number

D. The exact value of π is <span>3.14159...... If 0.3 is added to it, the answer would be 3.441592654. This is irrational.

Therefore, the answer is A.</span>

6 0

2 years ago

Read 2 more answers

What is the inverse of the function below? f(x) = x - 4

iren2701 [21]

Answer:

f^-1(x) = x + 4

Step-by-step explanation:

5 0

3 years ago

two lines in a system of equations with one solution have slopes that must be the same or different ?

Svet_ta [14]

Answer:

same

Step-by-step explanation:

same solution means same slope

3 0

2 years ago