3 years ago

How long is the golden gate bridge?? above its 1

1 answer:

4 0

If i've got the distance of the golden gate bridge right ,then it should be 20.88,you can round that up to either 20 or 21

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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

2x + 5 = 10

hammer [34]

There are many ways you can start off by solving an equation. In this case, the first operation used in solving this equation would be subtraction. You would have to subtract 5 from each side.

3 0

3 years ago

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Without solving, determine whether the solution of x = 21 is greater than or less than 21. Explain.

astraxan [27]

Answer:

Without solving, the solution is greater than 21. The can be proven because a fraction of x is equal to 21, therefore x cannot be less than 21.

Step-by-step explanation:

7 0

3 years ago

Convert 3.5 multiplied by 10 and 4 square root

AURORKA [14]

The answer is the first one, 35000.

7 0

3 years ago

If there are 16 boys and 48 girls in a room, fill out all of the possible ratios of boys to girls that could be made.

kondor19780726 [428]

These are all of the possible ratios:

- 1:3
- 8:24
-4:12
-2:6

Please vote my answer brainliest. thanks!

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3 years ago