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3 years ago

What is the solution? y = 3x - 5 y = 1\3*+3

Mathematics

1 answer:

PSYCHO15rus [73]3 years ago

3 0

Answer:

Step-by-step explanation:

y = 3x - 5

y = 1/3x + 3

3x - 5 = 1/3x + 3....multiply everything by 3 to get rid of the fraction

9x - 15 = x + 9

9x - x = 9 + 15

8x = 24

x = 24/8

x = 3

y = 3x - 5

y = 3(3) - 5

y = 9 - 5

y = 4

solution is : x = 3 and y = 4...or (3,4) <==

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A circle's radius that has an initial radius of 0 cm is increasing at a constant rate of 7 cm per second. Write a formula to exp

Alex Ar [27]

Answer:

r = 7t

or not mathematically,

r(t) = 7t

r(t) means, r, which is a function of t.

Step-by-step explanation:

Initial size of the radius = 0 cm, at t = 0 s

Rate of increase of the radius of the circle = 7 cm/s

dr/dt = 7

dr = 7 dt

∫ dr = 7 ∫ dt

r = 7t + C (C is the constant of integration)

At t = 0, r = 0,

0 = 0 + C

C = 0

r = 7t.

r(t) = 7t

3 0

3 years ago

Find the common ratio of the geometric sequence-15,-30,-60

Law Incorporation [45]

Answer:

Step-by-step explanation:

A geometric sequence means that each term is the previous term multiplied by a certain common ratio. For instance, here, -30 is 2 times -15, and -60 is 2 times -30. Hope this helps!

6 0

2 years ago

1) (x+y)² =<br>A. x²+2xy+y²<br>B. x²-2xy+y²<br>C.x²-2xy-y²

olchik [2.2K]

Answer:

a. x^2+2xy+y^2

Step-by-step explanation:

I hope this helps

8 0

2 years ago

Read 2 more answers

What are you building when you use a distance formula

kirill115 [55]

Answer:

See below

Step-by-step explanation:

In math, the distance formula gives us the distance between two

points, (x₁, y₁) and x₂, y₂):

$d = \sqrt{(x _{2}-x_{1})^{2} +(y _{2}-y_{1})^{2}}$

For example, in the triangle below, the distance between the points (1,5) and (-2, 1) is

$d = \sqrt{(1 - (-2))^{2} +(5-1)^{2}}$

$= \sqrt{3^{2} +4^{2}}$

$= \sqrt{9 + 16}$

$= \sqrt{25}$

= 5

You are really using Pythagoras' Theorem to find the distance.

When using the distance formula, you are building a right triangle whose hypotenuse connects two given points.

6 0

2 years ago

Find the savings plan balance after 12 12 months with an apr of 8 8% and monthly payments of $ 100 100.

ella [17]

Assume first payment is at the end of the first month.

APR=8% per annum = 0.08/12 per month
n=12 months
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Future value
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$=6.803356/0.0055$
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2 years ago