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Helga [31]
2 years ago
7

Can you please help me do this?

Mathematics
1 answer:
nlexa [21]2 years ago
4 0

Answer: U=39

Step-by-step explanation:

6=u -15/4

cross multiply ✖

U-15=6*4

U-15=24

U=24+15

U=39

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My father is 4 times old as me. after 5 years my father will be 3 times old how old is my father now
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Suppose u=<2,−1> and v=<1,−8> are two vectors that form the sides of a parallelogram. Then the lengths of the two di
tigry1 [53]
| u | = √(2² + (-1²)) = √5
| v | = √ ( 1² + (-8)² = √65
cos (u,v) = ( u * v ) / (| u | * | v |) =
 (2 * 1 + ( -1 ) * ( - 8 )) / √5 √ 65 = (2 + 8) / √5 √65 = 10 / (√5 √ 65 )
The length of a larger diagonal:
d 1² = | u |² + 2 |u| |v| + | v |² = 5 + (2 √5 √65 * 10 / √5 √65 )+65
d 1² = 70 + 20 = 90
d 1 = √ 90 = 3√10
d 2² = 70 - 20 = 50
d 2 = √50 = 5√2
Answer:
The lengths of the diagonals are: 3√10 and 5√2 .
8 0
3 years ago
If 2x + 6 =4x-4 then x=
Rina8888 [55]
The correct answer would be x = 4
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ipn [44]

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Select the correct answer from the drop-down menu.<br> Fill in the missing number in the equation.
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Answer:

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Step-by-step explanation:

a A + b A where A is a matrix and a and b are scalars

( a+b) A

3+5 \left[\begin{array}{cc}-1&2\\4&-5\end{array}\right] = 8\left[\begin{array}{cc}-1&2\\4&-5\end{array}\right]

         

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