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noname [10]
3 years ago
11

Simplify -15.4/-4……………………. −3.9 3.9 −4.9 4.9

Mathematics
1 answer:
Dafna1 [17]3 years ago
8 0
It is 3.9 I hope this will help you
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Evaluate the following expression when x = 3 and y = 4: Fraction with x squared plus y cubed in the numerator and 2 plus x in th
Black_prince [1.1K]
The answer is C. 14.6.

By evaluate, they mean substitute in the values of x and y to find the total of the expression, so you get:
(3^2 + 4^3)/(3 + 2) = (9 + 64)/5 = 73/5 = 14.6

I hope this helps!
4 0
3 years ago
Read 2 more answers
Write the vector u as a sum of two orthogonal vectors, one of which is the vector projection of u onto v
blagie [28]
U = ( -8 , -8)
v = (-1 , 2 )
<span>the magnitude of vector projection of u onto v =
</span><span>dot product of u and v over the magnitude of v = (u . v )/ ll v ll
</span>
<span>ll v ll = √(-1² + 2²) = √5
</span>
u . v = ( -8 , -8) . ( -1 , 2) = -8*-1+2*-8 = -8 
∴ <span>(u . v )/ ll v ll = -8/√5</span>
∴ the vector projection of u onto v = [(u . v )/ ll v ll] * [<span>v/ ll v ll]
</span>
<span>                          = [-8/√5] * (-1,2)/√5 = ( 8/5 , -16/5 )
</span>
The other orthogonal component = u - ( 8/5 , -16/5 )
                                   = (-8 , -8 ) - <span> ( 8/5 , -16/5 ) = (-48/5 , -24/5 )
</span>
So, u <span>as a sum of two orthogonal vectors will be
</span>
u = ( 8/5 , -16/5 ) + <span>(-48/5 , -24/5 )</span>










3 0
3 years ago
Read 2 more answers
If correct I will give brainly​
Marizza181 [45]

Answer:

B

Step-by-step explanation:

all you need to do is switch the x with 12

5 0
3 years ago
What is the answer 2c+(3c-4)=a-4
gavmur [86]

Answer:idk

Step-by-step explanation:

5 0
3 years ago
What happens to the mean?
velikii [3]

Answer:The mean decreases by 18 and the median stays the same.

Step-by-step explanation:

8 0
3 years ago
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