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3 years ago

Cogenuity Quiz Find the value of 6^3. OA) 6 ОВ) 36 OC) 72 OD) 216

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

7 0

Answer: OD) 216

Step-by-step explanation: 6^3 multiple it three times 6x6x6=216

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Find two numbers with a sum of 20 and a difference of 14

sergey [27]

Find two numbers with a sum of 20 and a difference of 14

Make two equations

X+Y=20

X-Y=14

Now add x since y cancels out and add 20+14 To end up with

2x=34

Now divide 2 both sides to get x alone

2x/2=34/2

X=17

Now substitute x answer to first equation and solve for y

17+y=20

Subtract 17 both sides

Y= 3

Your two numbers are

3 and 17

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3 years ago

Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who

alekssr [168]

Answer:

They traveling at $0.37\ m/s$ in backward direction.

Step-by-step explanation:

Given mass of Ammy $m_1=55kg$

and velocity is forward at $v_1=3m/s$

Also, mass of Jenny $m_2=40kg$

Who is travelling in opposite direction $v_2=-5m/s$

Let velocity in forward direction is positive and velocity in backward direction is negative.

Also, velocity after crash is $v$

As they crashed into each other and they moved as one mass. We can apply principle of conservation of momentum.

Conservation of momentum says momentum before collision should equal to momentum after collision.

$m_1v_1+m_2v_2=(m_1+m_2)v$

$(55\times3)+(40\times(-5))=(55+40)v\\\\165-200=95v\\\\-35=95v\\\\v=\frac{-35}{95}=-0.368m/s$

So, velocity after collision $v$ ≅ $-0.37m/s$ is in opposite direction. That is the direction of Jenny.

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3 years ago

I need help ASAP <br><br> I also need to show work

krok68 [10]

Answer:

A = 66 cm^2

Step-by-step explanation:

The equations to find the area of a paraleogram is:

A = bh

A = 11(6)

A = 66 cm^2

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3 years ago

A class sold tickets to their school play. Each of the 23 students in the class sold 4 tickets. The cost of each ticket was $7.H

Gnoma [55]

$7•4 tickets=$28every student
$28•23=$644
$644 the amount of money the class earned

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3 years ago

Please help ! in class and don't understand!

Alex777 [14]

Answer:

I'll do the first one and lets see if that helps

Step-by-step explanation:

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3 years ago