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3 years ago

Helllllllpppppppp Plllleeeeaaase I have a test!!!!

Mathematics

1 answer:

Tresset [83]3 years ago

3 0

Do you still need it

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PLEASE help me I beg you

Likurg_2 [28]

Answer:

pls, don't do that

Step-by-step explanation:

3 0

3 years ago

A jar contains 2 orange, 4 green, 2 white and 2 black balls. What is the probability of drawing an orange ball without putting i

KonstantinChe [14]

Answer:

2/45

Step-by-step explanation:

We are told that:

A jar contains 2 orange, 4 green, 2 white and 2 black balls.

The total number of balls in the jar is calculated as:

2 orange balls + 4 green balls + 2 white balls + 2 black balls = 10 balls

The probability of drawing an orange ball = P(Orange) = 2/10

The probability of drawing a black ball = P(Black) = 2/10

Therefore, the probability of drawing an orange ball without putting it back, then drawing a black ball is calculated as:

2/10 × 2/9 = 4/90

= 2/45

7 0

3 years ago

Find sin(a+B)

diamong [38]

Answer:

Cos A=5/13

we have

Cos² A= $1-Sin ²A$

25/169=1-Sin²A

sin²A=1-25/169

sin²A=144/169

Sin A= $\sqrt{144/169}=12/13$

again

Tan B=4/3

P/b=4/3

p=4

b=3

h= $\sqrt{3²+4²}=5$

Now

Sin B=p/h=4/5

in IV quadrant sin angle is negative so

Sin B=-4/5

CosB=b/h=3/5

Now

Sin(A+B):sinAcosB+CosAsinB

now 

substitute value

Sin(A+B):12/13*3/5+5/13*(-4/5)=36/65-4/13

=16/65 is a required answer

6 0

3 years ago

4 bags of cement do 18m(squared), how many m(squared) can be done with 7 bags ?

Elis [28]

I think 7 bags do 31.5 m squared

4 0

3 years ago

If X squared equals 16 then X equals 4

AfilCa [17]

That would be correct because if x times x =16 than that means that the square root of 16 is 4

6 0

3 years ago