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3 years ago

What is the equation of a line passing through the points (2,1) and (-4,-1)?

Mathematics

1 answer:

bekas [8.4K]3 years ago

4 0

The answer is y=1/3x+1/3

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11 take away 2 times minus 7 plus 4

Trava [24]

Answer:

(11 x 2) - 7 + 4

Is your algebra expression.

3 0

3 years ago

Evaluate \dfrac{e}{4}+2f-3 4 e +2f−3 when e=12e=12 and f=\dfrac12f= 2 1 .

Verdich [7]

Answer: -406

Step-by-step explanation:

We have the following expression:

$\frac{e}{4}+2f-34e+2f-3$

In addition we know:

$e=12$ and $f=\frac{1}{2}$

If we substitute this in the expresion, we will have:

$\frac{12}{4}+2(\frac{1}{2})-34(12)+2(\frac{1}{2})-3=-406$

4 0

3 years ago

Read 2 more answers

Determine the angle at the centre of a circle with radius 6.0 cm for an arc length of 8.0 cm.

sveta [45]

Answer:

Third option.

Step-by-step explanation:

You need to remember that the formula used to calculate the arc lenght is:

$arc\ length=r C$

Where "r" is the radius and "C" is the central angle in radians.

You need to solve for "C":

$C=\frac{arc\ length}{r}$

You know the radius and the arc lenght, therefore, you can substitute values to calculate the central angle in radians. Therefore, this is:

$C=\frac{8.0cm}{6.0cm}$

$C=\frac{4}{3}radians$

4 0

3 years ago

a business shows a profit of $110 for selling 20 leather wallets how much profit would the business make if they sold 35 wallets

mafiozo [28]

Answer:

They would get 192.5

Step-by-step explanation:

First we need to find how much it cost per 1 so you will need to dovide 110 by 20 which equal 5.5

Then you will multiply 5.5*35 and get 192.5

8 0

3 years ago

How do I find the measure of the interior angle?

nataly862011 [7]

Answer:

see the explanation

Step-by-step explanation:

we know that

The sum of the interior angles in any polygon is given by the formula

$S=(n-2)180^o$

where

n is the number of sides of the polygon

step 1

Find the sum of the interior angles in the given polygon

we have

$n=5\ sides$

substitute

$S=(5-2)180^o=540^o$

step 2

Find the value of x

we know that

$-3x+125+(45-x)+(-x+90)+80=540$

solve for x

$-5x+340=540$

$-5x=200\\x=-40$

step 3

Find the measure of each interior angle

substitute the value of x

Angle A

$-3(-40)=120^o$

Angle B

$80^o$

Angle C

$-(-40)+90=130^o$

Angle D

$45-(-40)=85^o$

Angle E

$125^o$

3 0

3 years ago