A supersonic jet was flying at a constant velocity starting 8,400 kilometers west of U.S. airspace. Itflew one-third of the way to U.S. airspace in 2 hours. What was the jet's velocity?
Write your answer as a whole number.

Answers

Answer 1
Answer:

Answer:

1,400 km/hr

Step-by-step explanation:

One third of the distance 8,400 km is 2,800 km.

The unit rate (speed) of the jet is therefore

2,800 km

--------------- = 1,400 km/hr

  2 hr


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3x+5y=10. 5x+7y=10 system of equations

Answers

3x + 5y = 10....multiply by 5
5x + 7y = 10 ...multiply by -3
------------------
15x + 25y = 50 (result of multiplying by 5)
-15x - 21y = -30 (result of multiplying by -3)
-----------------add
4y = 20
y = 20/4
y = 5

3x + 5y = 10
3x + 5(5) = 10
3x + 25 = 10
3x = 10 - 25
3x = -15
x = -15/3
x = -5

solution is (-5,5)

Is Sand smaller than salt

Answers

Well, the sand molecule/particle changes based on the environement.
As of salt, NaCl, you can have big chunks of it. But if you said an average grain of table salt and an average grain of sand, I'd say that the sand is smaller.

A garden table and bench cost $655 combined. The garden table cost $45 less than the bench. What is the cost of the bench?

Answers

The cost of the bench for the condition is 4350.

What are Mathematical operators?

A collection of numbers and operations is an expression in mathematics. The following are the parts of a math expression that do a math operation:

Operands: Operands are the numbers that an operator uses. The terms that are given to the operands vary according to the kind of operation.

Given the total cost of the bench and table = $655

The garden table cost $45 less than the bench,

let the cost of the bench be x

cost of table is x - 45

according to the conditions,

x  + x - 45 = 655

2x = 655 + 45

x = 722/2

x = $350

Hence the cost of the bench is $350.

Learn more about Mathematical operators;

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Answer:

$444

Step-by-step explanation:

let the cost of the bench = x

 

the cost of the garden table is x + 94

 so,

x + (x + 94) = 794

 

2x + 94 = 794

 

2x = 700

 

x = 350

 

The bench costs $350 and the garden table costs 350 + 94 = $444

Is a shoe store was having a back-to-school sale where you can buy six pairs of shoes for $52.62 if a large family decided to buy three pairs of shoes how much will it cost

Answers

The family would buy the three pairs of shoes for $26.31 because you have to divide $52.62 in half since they bought half the amount of pairs of shoes that are given in the sale.

A car is travelling at 100 km/hr. How far can it travel in 3/4 of an hour?

Answers

In 1 hour the car travels for a distance = 100 km
In 3/4 hour the car travels for a distance = 100 * (3/4)
                                                                 = 75 km

Point B is the midpoint of Line segment A C . Horizontal line with points A, B, and C. A vertical line extends from point B through point D to create two right angles.

Which statements about the figure must be true? Select three options.

AngleDBC is bisected by ray BD.
AngleABC is bisected by ray BD.
BC = One-halfAC
Line segment D B is-congruent-to Line segment B C
2mAngleDBC = mAngleABC

Answers

Answer:

(b).∠ABC is bisected by ray BD.

(c) BC = One-half of AC

(e) 2 ∠DBC = ∠ABC

Step-by-step explanation:

Here ray AC and ray BD is perpendicular to each other.

Thus, Option (a) is not true as ∠DBC is not bisected by any ray.

Option (b) is correct.

Option (c) is also correct as B is the mid-point of AC.

Option (d) is also incorrect as length of line segment DB and line segment BC can be different.

Option (e) is also correct.

Answer:

angle ABC is bisected by BD

BC= halfAC

2mangleDBC=mangleABC

Step-by-step explanation: