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4 years ago

I need to figure out how to find the top blank

Mathematics

2 answers:

dmitriy555 [2]4 years ago

6 0

I think its 384 because if you multiply the two numbers underneath then you get 384 which is how they got all the other numbers

Mnenie [13.5K]4 years ago

5 0

The answer would be 384 because when you multiply 48 x 8= 348

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The sum of twice a number and 15

lana [24]

Answer:

2x+15

Step-by-step explanation:

because this is easy

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3 years ago

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28 members and 50% decrease

stellarik [79]

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rosijanka [135]

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For what values of q are the two vectors A = i + j + kq each other and B-iq-23 + 2kg perpendicular to

Sloan [31]

Answer:

The value of q are 0.781,-1.281.

Step-by-step explanation:

Given : Two vectors $A=i+j+kq$ and $B=iq-2j+2kq$ are perpendicular to each other.

To find : The value of q ?

Solution :

When two vectors are perpendicular to each other then their dot product is zero.

i.e. $\vec{A}\cdot \vec{B}=0$

Two vectors $A=i+j+kq$ and $B=iq-2j+2kq$

$(i+j+kq)\cdot (iq-2j+2kq)=0$

$(1)(q)+(1)(-2)+(q)(2q)=0$

$q-2+2q^2=0$

$2q^2+q-2=0$

Using quadratic formula,

$q=\frac{-1\pm\sqrt{1^2-4(2)(-2)}}{2(2)}$

$q=\frac{-1\pm\sqrt{17}}{4}$

$q=\frac{-1+\sqrt{17}}{4},\frac{-1-\sqrt{17}}{4}$

$q=0.781,-1.281$

Therefore, The value of q are 0.781,-1.281.

6 0

3 years ago

Need help with this easy math problem

steposvetlana [31]

Answer:

B=43 C=137 D=48

Step-by-step explanation:

b=43 because any small triangle you subtract each angle from 180 . 180-89-48= 43

c=137 because angle b and c make a supplementary angle so you subtract b from 180 to get c. 180-43= 137

d=48 because <edc is congruent to <eyx so they are the same size

4 0

3 years ago