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2 years ago

PLEASE HELP ASAP I DONT GET SOMEONE PLEASE EXPLAIN TOO!!!

Mathematics

2 answers:

Jobisdone [24]2 years ago

6 0

Answer :
Line 1 : Postive
Line 2 : Undefined
Line 3 : Zero
Line 4 : Negative

Explanation:

Look at the line. Starting from the left side, is it going up or down? Up means it is positive. Down means it is negative. The other two lines you just have to remember which one is undefined and which one is Zero.

Tomtit [17]2 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

A line sloping upwards from left to right has a positive slope.

Line 1 is in this category.

A line sloping downwards from left to right has a negative slope.

Line 4 is in this category.

The slope of a vertical line, parallel to the y- axis is undefined.

Line 2 is in this category.

The slope of a horizontal line, parallel to the x- axis is zero.

Line 3 is in this category.

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A and B share the cost in a ratio of 3:2 . The cost is ?85; how much does A pay?

Katen [24]

Answer:

The amount of money A pays is $\$51$

Step-by-step explanation:

Let

x-----> amount of money A pays

y-----> amount of money B pays

we know that

$x+y=85$ ------> equation A

$\frac{x}{y}=\frac{3}{2}$

$y=\frac{2}{3}x$ ------> equation B

substitute equation B in equation A and solve for x

$x+(\frac{2}{3}x)=85$

$\frac{5}{3}x=85$

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2 years ago

Can someone please help!!!!!

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2 years ago

In 2018, Yolanda paid $4,526 in Social Security tax. If the Social Security tax rate was 6.2% to the maximum income of $128,400

lana [24]

Answer:

$73000

Step-by-step explanation:

Given: Social security tax paid by Yolanda is $4562.

6.2% tax to be paid on earning to the maximum income of $128400.

Lets assume Yolanda´s income be `x`.

Now, calculating the taxable income of Yolanda

∴ $62\% \times x= \$ 4526$

⇒ $\frac{62}{100} \times x= 4526$

Cross multiplying both side

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∴x= $73000

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7 0

2 years ago

Find the point-slope equation for

Georgia [21]

Answer:

The answer to your question is y = -2x + 9

Step-by-step explanation:

A (9, 9)

B (-2, 13)

Process

1.- Find the slope

m = $\frac{y2 - y1}{x2 - x1}$

$m = \frac{13 + 9}{-2 - 9}$

$m = \frac{22}{-11}$

m = - 2

2.- Find the line equation

(y - y1) = m (x - x1)

y + 9 = -2 (x - 9) y + ? = [ ] ( x + [ ])

y + 9 = - 2x + 18

y = - 2x + 18 - 9

y = -2x + 9

7 0

2 years ago

Find the differential of each function. (a) y = tan( 7t ) dy = Incorrect: Your answer is incorrect. (b) y = 4 − v2 4 + v2 dy =

Kisachek [45]

Answer:

$(a) dy= 7sec^2(7t)dt\\\\(b) dy = \frac{-16v}{(4+v^2)^2} dv$

Step-by-step explanation:

Given;

(a) y = tan (7t)

let u = 7t

y = tan(u)

du/dt = 7

dy/du = sec²(u)

$\frac{dy}{dt} = \frac{dy}{du} *\frac{du}{dt}\\\\\frac{dy}{dt} = sec^2(u)* 7\\\\\frac{dy}{dt} =7sec^2(u)\\\\\frac{dy}{dt} = 7sec^2(7t)\\\\dy = 7sec^2(7t)dt$

(b)

$y = \frac{4-v^2}{4+v^2}\\\\$

let u = 4 - v²

du/dv = -2v

let v = 4 + v²

dv/du = 2v

$y = \frac{4-v^2}{4+v^2}\\\\\frac{dy}{dv} = \frac{vdu-udv}{v^2} \\\\\frac{dy}{dv} =\frac{-2v(4+v^2)-2v(4-v^2)}{(4+v^2)^2}\\\\\frac{dy}{dv} =\frac{-8v-2v^3-8v+2v^3}{(4+v^2)^2}\\\\\frac{dy}{dv} =\frac{-16v}{(4+v^2)^2}\\\\dy = \frac{-16v}{(4+v^2)^2}dv$

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2 years ago