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sattari [20]
3 years ago
9

Anybody know the answer ?

Mathematics
2 answers:
AlladinOne [14]3 years ago
8 0
I think its idfk…maybe?!?
ki77a [65]3 years ago
7 0

Answer:

The final speed after collision of the first ball that weighs 4 kg will be 8.5 m/s.

Step-by-step explanation:

M1 = 4

M2 = 2

V1 = 8

V2 = 6

V2f = 5

V1f = ?

Rep. Situation with Momentum formula:

M1*V1+M2*V2 = M1*V1f+M2*V2f

Rearrange:

((M1*V1+M2*V2)-M2*V2f) / M1 = V1f

Calculate:

((44) - 10) / 4 = V1f

V1f = 8.5

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What is the value of r?<br> Round your final answer to the nearest whole number.
vaieri [72.5K]

Answer:

r = 13

Step-by-step explanation:

Hypotenuse is the side opposite to 90 degree angle, so hypotenuse is r.

Also, with respect to the angle given, the side "12" is the opposite.

So we have opposite side to angle and we need hypotenuse. Which trigonometric ratio related opposite with hypotenuse? It is SINE.

So we can write:

Sin(67.4)=\frac{Opposite}{Hypotenuse}=\frac{12}{r}\\rSin(67.4)=12\\r=\frac{12}{Sin(67.4)}\\r=12.99

Rounded to nearest whole number, r = 13

8 0
3 years ago
Read 2 more answers
How many lines of symmetry does it have
Anarel [89]

Answer:

14

Step-by-step explanation:

3 diangonalss joined togeheter is call a symertry

4 0
3 years ago
Select the graph for the solution of the open sentence. Click until the correct graph appears. |x| &gt; 3/2
Soloha48 [4]
ANSWER

See attachment

EXPLANATION

The given inequality is

|x| \: > \: \frac{3}{2}

This implies that,

x\: > \: \frac{3}{2} \: or \: - x\: > \: \frac{3}{2}

Multiply both sides of the second inequality by -1 and reverse the inequality sign.

x\: > \: \frac{3}{2} \: or \: x\: < \: - \frac{3}{2}

The graphical solution to this inequality is shown in the attachment.

7 0
3 years ago
Jim spins a spinner with colors red, blue, yellow, purple, green, and orange. Jim also flips a coin. What is the probability tha
S_A_V [24]
Probability=number of specific outcomes/total possible outcomes

And the probability of two events happening at the same time is P(1)*P(2), or the product of the probabilities of each event...

In this case:

P(primary color)=3/6=1/2

P(head)=1/2

P(primary and head)=(1/2)(1/2)=1/4
4 0
3 years ago
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-5(-x - 1) + 4x – 1= 49<br> solve for x
Anton [14]

Answer:

x=5

Step-by-step explanation:

-5(-x - 1) + 4x – 1= 49

Distribute

5x +5 +4x -1 = 49

Combine like terms

9x +4 = 49

Subtract 4 from each side

9x+4-4 = 49-4

9x = 45

Divide by 9

9x/9 =45/9

x = 5

4 0
3 years ago
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