All categories

3 years ago

PLEASE HELP

Mathematics

1 answer:

Anika [276]3 years ago

7 0

Answer:

1.43 hours

Step-by-step explanation:

Given that:

Speed of plane A = 40 mph

Speed of plane B = 100 mph

Distance between plane A and B = 200 m

In how many hours will they meet?

Recall :

Distance = speed * time

Let the time traveled by each plane = t

Since the total distance apart = 200m

Hence,

Plane A distance + Plane B distance = total distance

40t + 100t = 200

140t = 200

Divide both sides by 140

140t / 140 = 200 / 140

t = 1.4285 hours

t = 10/7 hours or 1.43 hours

You might be interested in

Identify the vertex of the graph. Tell whether it is a minimum or maximum.

Karolina [17]

Answer:

(0, - 1) maximum

Step-by-step explanation:

The vertex is the turning point of the graph.

That is vertex = (0, - 1 )

Since the graph opens down then it is a maximum

8 0

3 years ago

I need answer please 6x + 3y + 2x + y

adoni [48]

Answer:

8x +4y

Step-by-step explanation:

6x + 3y + 2x + y

1) add similar variables together.

2) 6x + 2x = 8x

3y + (1)y = 4y.

3) y by itself basically means 1y, since in front of every variable theres an invisible 1.

5 0

3 years ago

Read 2 more answers

Please help!!!

Nonamiya [84]

Answer:

c. $2a^3x^4-3a^3x^3+a^4x^2$

d. $63x^5y^3-30x^2y^4-7x^3y^2$

Step-by-step explanation:

For this exercise you need to remember the following:

1. The multiplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-$

2. The Product of powers property, which states that:

$(a^m)(a^n)=a^{(m+n)}$

3. The Distributive property:

$a(b\±c)=ab\±ac$

Knowing that, you can solve the multiplication of the polynomials:

c. $(-2ax^2+3ax-a^2)(-a^2x^2)=\\\\=(-2ax^2)(-a^2x^2)+(3ax)(-a^2x^2)+(-a^2)(-a^2x^2)=2a^3x^4-3a^3x^3+a^4x^2$

d. $(6.3x^3y-3y^2-0.7x)(10x^2y^2)=\\\\=(6.3x^3y)(10x^2y^2)+(-3y^2)(10x^2y^2)+(-0.7x)(10x^2y^2)=63x^5y^3-30x^2y^4-7x^3y^2$

8 0

3 years ago

Which is the base shape of this prism

SVETLANKA909090 [29]

Hi.
This appears to be a right triangular prism.
You can tell, based off of how two of the shapes are shaped as.

4 0

3 years ago

Read 2 more answers

You are going to play mini golf. The mini golf place has a bucket that has 20 blue, 10 orange, 10 green, 10 yellow, 15 red, and

miv72 [106K]

If I am not mistaken, there is a 31% chance that you pick an orange golf bell, put it back and then pick up a red ball.

6 0

3 years ago