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2 years ago

What would x+2y=-2 in slope intercept form?

Mathematics

1 answer:

Alchen [17]2 years ago

5 0

Answer:

y= - 1/2*x -1

Step-by-step explanation:

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Andy has 310 in his account. Each week w he withdraws 30 for his expences which expression could be used if he wanted to find ou

Butoxors [25]

310-30x=y
310-30(8)=y
310-240=y
$60=y

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2 years ago

Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.

pashok25 [27]

Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

$a\cdot b=0$

By using the property

$(u+v)\cdot (u-v)=0$

We know that

$(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2$

$\mid u\mid ^2-\mid v\mid^2=0$

$\mid u\mid^2=\mid v\mid^2$

Magnitude is always positive

When power of base on both sides are equal then base will be equal

Therefore,

$\mid u\mid=\mid v\mid$

Hence, the length of vectors u and v must have the same length.

5 0

3 years ago

On a road trip you see a sign “350 km to Indianapolis”. About how many hours will it take you to drive to Indianapolis if you ar

deff fn [24]

Answer:

3.019 hours.

Step-by-step explanation:

In this case they ask us to calculate the time in hours that are in those distances, for this we have the speed and the distance, we know that speed is equal to:

v = d / t

therefore the time would be:

t = d / t

we must pass the distance that is in kilometers to miles, like this:

350 km * 1 mile / 1.61 km = 217.4 mi

Now if replacing:

t = 217.4 / 72 = 3.019

Therefore, the time would be 3.019 hours.

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3 years ago

How do u mark a person with brainlest please acttually tell me

ruslelena [56]

Answer:

this is how you do it.. press the crown button in an answer

Step-by-step explanation:

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2 years ago

-5 (3x – 4) + 4 = 69

sleet_krkn [62]

Answer:

-5

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers