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Ludmilka [50]
3 years ago
6

Train A leaves the station traveling east at 50 mph while train B leaves the station 30 minutes later traveling west at 65 mph.

Choose the equation below that represents the distance in miles between the two trains, D, as a function of T, the time in hours after train B has departed.
Mathematics
1 answer:
stepladder [879]3 years ago
8 0

Answer:

Change 45 min to .75 hrs

Distance = speed * time

Train A's distance = 55(t+.75)

Train B's distance = 70t

The equation

D(t) = 70t + 55(t+.75)

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Please help 25 points and brainliest
-BARSIC- [3]

Answer:

1a. 8

1b. AB & BC

1c. AC

2. \sqrt{52} miles

3. NO

Step-by-step explanation:

1a. AC is your hypotenuse which is C² and BC is B², so we plug it in the equation.

A²+6²=10²

A²+36=100

A²=64

A=\sqrt{64}

A=8

1b. Legs are the two shorter sides, AB & BC, which are 6 & 8 respectively.

1c. The hypotenuse is the longest side AC

2. Make lines that make the graph for a triangle with a line. My graph is linked below. Then counts the points, AC=6, BC=4, then use the pythagorean therom.

6²+4²=X²

36+16=52

\sqrt{52}=X

3. 15²+17²=19²

514=361

not possible

so it is not a right triangle

7 0
3 years ago
ASAP.....................................
Tasya [4]

Answer:

- 2/3

Step-by-step explanation:

TRUST ME ON THIS; PERSON ABOVE ME IS WRONG!! pls give me brainliest!!

6 0
4 years ago
Read 2 more answers
there were n signers of the declaration of independence. the oldest was benjamin franklin, who was y years old. 7 is 10% of y. w
Zigmanuir [339]

Answer:

70

Step-by-step explanation:

In this problem 7 is 10% of Ben Franklin's age. To solve you must find what 100% percent of his age is. To do this multiply 7 by 10. You do this because 10% times 10 is equal to 100%. Therefore, his age is 70.

7 0
3 years ago
An electrician leans an extension ladder against the outside wall of a house so that it reaches an electric box 20 feet up. The
Nikolay [14]

The length of the ladder nearest hundredth of a foot is 23 feet.

We have given that,

An electrician leans an extension ladder against the outside wall of a house so that it reaches an electric box 20 feet up.

The ladder makes an angle of 77^{\circ}  the ground.

<h3>What is the sin ratio?</h3>

sin(\theta)=\frac{perpendicular \ side}{hypotenous}

Therefore we get,

\implies\frac{22}{H} =sin(77)

\implies H=22/sin(77)

\implies 22.59ft\\\\=23ft

Therefore, The length of the ladder nearest hundredth of a foot is 23 feet.

To learn more about the trigonometric ratio visit:

brainly.com/question/24349828

#SPJ1

7 0
2 years ago
How could you solve for x in the problem 3x+7=-x-1
lukranit [14]

Hello there!

3x+7=-x-1\\

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by 7 from both sides of the equation.

3x+7-7=-x-1-7

Simplify

3x=-x-8

Then you add by x from both sides of the equation.

3x+x=-x-8+x

Simplify

4x=-8

Divide by 4 from both sides of the equation.

\frac{4x}{4}=\frac{-8}{4}

Simplify it should be the correct answer.

x=-2

Answer⇒⇒⇒x=-2

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

7 0
3 years ago
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