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Blizzard [7]
3 years ago
8

Is this equation linear? 1/3x-2y=7 I NEED HELP ASAP please

Mathematics
1 answer:
OleMash [197]3 years ago
8 0
In highest poer of placholder is  1 then it is linear

1/3x^1-2y^1=7
it is linear
yes it is
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Two trains travel at right angles to each other after leaving the same train station at the same time. Two hours later they are
Alex787 [66]

Answer:

15 miles per hour is the speed of the slower train.

Step-by-step explanation:

As given in the figure attached,

Let the speed of train 1 is v and train 2 is u.

Therefore, distance traveled in 2 hours by train 1 will be = 2v miles

and distance traveled by train 2 will be = 2u miles

Now we can see in the figure a right angle triangle is formed by the two trains.

AB² + BC² = AC²

(2v)² + (2u)²= (65.30)²

4v² + 4u² = 4264.09

Now we divide this equation by 4

v² + u² = 1066.02

If speed of the slower train is v miles per hour then as per statement of the question.

u = v - 14

v = u + 14

By putting the value of v in the equation

(u + 14)² + u² = 1066

u² + 196 + 28u + u² = 1066

2u² + 28u + 196 = 1066

2u² + 28u + 196 - 1066 = 0

2u² + 28u - 870 = 0

By diving this equation by 2

u² + 14u - 435 = 0

u² + 29u - 15u - 435 = 0

u(u + 29) - 15(u + 29) = 0

(u + 29)(u - 15) = 0

u = -29, 15

Since speed can not be with negative notation so u = 15 miles per hour will be the speed.

Therefore, 15 miles per hour is the speed of the slower train.

5 0
3 years ago
W=zr-2zt^3 solve for z
ladessa [460]

Answer: z=0

Step-by-step explanation:

W=zr-2zt^3

Move all terms containing z to the left, all other terms to the right.

dd '-1rz' to each side of the equation.

-1rz+z=rz+-1rz+-2t^3z

Combine like terms: rz + -1rz = 0

-1rz+z=0+(-2t^3z)

-1rz+z=-2t^3z

Add 2t^3z to each side

-1rz+2t^3z+z=-2t^3z+2t^3z

Combine the like terms 2t^3z+2t^3z=0

-1rz+2t^3z+z=0

Factor out the Greatest Common Factor (GCF), 'z'.

z(-1r+2t^3+1)=0

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

8 0
3 years ago
1. Locate a menu for your favorite restaurant and pick three items for yourself and each friend.
ddd [48]

Answer:

Wat the heck?

Step-by-step explanation:

Is this hw cus I feel bad for ya!

6 0
3 years ago
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What is the distance around this figure?
prisoha [69]

Answer:

40

Step-by-step explanation:

i think? i may have not understood the picture correctly, so if this is wrong i apologise

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3 years ago
A cake is shared between 5 people. What percentage of the cake does each person get. SOMEONE HELP ASAP
abruzzese [7]

Answer:

20%

Step-by-step explanation:

100% shared between 5 peoples.

100/5 = 20%

Yeah_Boi ;)

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6 0
3 years ago
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