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kirill115 [55]
3 years ago
9

Find all values of

Mathematics
1 answer:
den301095 [7]3 years ago
6 0
The vectors will be orthogonal if their dot product is zero.

\langle5,-4,4\rangle\cdot\left\langle b^2,b,0\right\rangle=5b^2-4b=0

You have

5b^2-4b=b(5b-4)=0\implies b=0,b=\dfrac45
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What is the value of y + 25 equals 3 y -2
cluponka [151]
First subtract y from both sides to isolate the variable.

25 = 2y-2

Next, add 2 to both sides.

27 = 2y

Last, divide by 2.

13.5 = y
3 0
3 years ago
ΔABC is similar to ΔDEF. The ratio of the perimeter of ΔABC to the perimeter of ΔDEF is 1 : 10. If the longest side of ΔDEF meas
Gala2k [10]
The problem ask to find the longest side of the triangle ABC if the longest side of triangle DEF measures 40 units and the best answer among the choices is letter B. 4 units. I hope you are satisfied with my answer and feel free to ask for more .
4 0
3 years ago
Read 2 more answers
I have 3 slots left and 3 answers left. Fill them in pls and u get a brainlist :)
gulaghasi [49]

Answer:

Water (one oxygen atom bonded to two hydrogen atoms)

Step-by-step explanation:

The chemical formula for water is H²O. The H is the chemical symbol for Hydrogen and O is the chemical symbol for Oxygen. The 2 is a subscript which represents how many atoms of a certain element are in a molecule. In this case, the subscript ² comes after H, indicating that there are two Hydrogen atoms inside water. There is no subscript after O, meaning there is only one Oxygen atom. Therefore, there are two Hydrogen atoms and one Oxygen atom that bond to form water. Hope this helps :))

4 0
3 years ago
Simplify the expression. Write your answer as a complex number.
prohojiy [21]

Answer:

15-8i

Step-by-step explanation:

we know that

The algebraic expression is equal to

5\sqrt{9}-\sqrt{-64}}

Remember that

\sqrt{9}=3

and

i=\sqrt{-1}

so

\sqrt{-64}=i\sqrt{64}=8i

substitute

5\sqrt{9}-\sqrt{-64}}=5(3)-(8i)=15-8i

4 0
3 years ago
A prism is comply filled with 3996 cubes that have edge lengths of 1/3 inches. What is the volume of the prism
stich3 [128]
The volume of a cube by definition is:
 V = L ^ 3
 Where:
 L: side.
 We have then that the volume of a cube is:
 V = (1/3) ^ 3
 V = 1/27
 Then, the prism volume is:
 Vtotal = 3996 * V
 Vtotal = 3996 * (1/27)
 Vtotal 148 inches ^ 3
 Answer:
 the volume of the prism is:
 Vtotal 148 inches ^ 3
6 0
4 years ago
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