3 years ago

Help me please asap !! lol

Mathematics

1 answer:

vitfil [10]3 years ago

6 0

The slope is -2/3
to find the slope you use the y2-y1/x2-x1 formula

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Please help me ASAP on this

nika2105 [10]

Answer:

z=20

Step-by-step explanation:

(2z + 16) +124 =180

2z + 16 +124

2z + 140 = 180

2z -140 -140

2z = 40

z = 20

6 0

3 years ago

What is 1+1x100 divided by 5

ANEK [815]

Answer:

21 is the answer

Step-by-step explanation:

1+1x100 divided by 5

8 0

4 years ago

Read 2 more answers

To find the slope of the trend line below Reilly chose the points (1,80) and (2,30). explain whether the points she chose will h

Anettt [7]

Answer:

We can't see the graph

Step-by-step explanation:

7 0

3 years ago

A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 255 kg · m2 and is rotating at 9.0 rev/min about a

Degger [83]

Answer:

7 rpm = 0.73 rad/s

Step-by-step explanation:

R = Radius of merry-go-round = 1.8 m

$I_M$ = Moment of inertia of merry-go-round = 255 kg m²

$I_C$ = Moment of inertia of child

ω = 9 rev/min

m = Mass of child = 24 kg

From the conservation of angular momentum

$I\omega=I'\omega '\\\Rightarrow I\omega=(I_M+I_C)\omega'\\\Rightarrow \omega'= \frac{I\omega}{(I_M+I_C)}\\\Rightarrow \omega'=\frac{I\omega}{(I_M+mR^2)}\\\Rightarrow \omega'=\frac{255\times 9}{(255+24\times 1.8^2)}\\\Rightarrow \omega'=6.9\ rev/min$

∴ New angular speed of the merry-go-round is 7 rpm = $7\times \frac{2\pi}{60}=\mathbf{0.73\ rad/s}$

3 0

4 years ago

2x^2+18x+28 factorise

Pavlova-9 [17]

(x+6)(x+3)=2x^2+......

7 0

4 years ago