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3 years ago

Which equations are in standard form? Check all that apply

Mathematics

2 answers:

vitfil [10]3 years ago

4 0

Answer:

2x+3y=-6

x-y=5

Step-by-step explanation:

just finished the lesson these are the answers

OLga [1]3 years ago

4 0

Answer:

2x+3y=-6

x-y=5

Step-by-step explanation:

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Find the center and radius of the circle with the given equation. Then select the correct graph of the equation.

likoan [24]

Answer:

Step-by-step explanation:

In order to find the center and the radius of this circle, you have to complete the square on it. And only for the x-terms, because the y term is squared and there is no other y term. We'll get to that in a second.

Take half the linear x-term, square it and add it to both sides. Our linear term is 10. Half of 10 is 5, and 5 squared is 25. We add 25 to both sides:

The reason we do this is to create a perfect square binomial inside that set of parenthesis. Simplifying the right side as well gives us:

This tells us that the center is (-5, 0). Remember when I said we would get back to the y terms? Because there was only a y-squared and no other y terms, that is the same as writing the equation as

The radius is the square root of the constant. So the radius is 6.

D is the graph you want.

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3 years ago

Write an equation that is perpendicular to x-3y=2 and contains the point (2,4)

Kisachek [45]

perp to x-3y=2 thru (2,4)

For perpendicular we swap the coefficients on x and y, negating one

3x + y = some constant

We get the constant in the obvious way from the point

3x + y = 3(2) + 4 = 6 + 4 = 10

Answer: 3x + y = 10

6 0

3 years ago

In order to join a flying club,there is a $200 annual fee and $20 a month fee to maintain the flying club runaway.Write an equat

Fudgin [204]

Answer:

The equation modelling the situation is $T=200+20m$ .

After 10 months the cost would be $400.

Step-by-step explanation:

Given:

Annual Fee of flying club = $200

Monthly fee = $20

We need to write an equation for total cost.

Solution:

Let the number of months be denoted 'm'

Let Total cost be denoted by 'T'

Now we can say that:

Total cost is equal to sum of Annual Fee of flying club plus Monthly fee multiplied by number of months.

framing in equation form we get;

$T=200+20m$

Hence The equation modelling the situation is $T=200+20m$ .

Now given:

We need to find the number of months when total cost will be $400

So we will substitute T= 400 in above equation.

$200+20m=400$

Subtracting both side by 200 we get;

$200+20m-200=400-200\\\\20m=200$

Dividing both side by 20 we get;

$\frac{20m}{20}=\frac{200}{20}\\\\m=10 \ months$

Hence After 10 months the cost would be $400.

6 0

2 years ago

Answer please and explain

uranmaximum [27]

Answer:

18.84956, 18.84 if rounded to the nearest hundredth, and 18 if rounded to nearest whole number.

8 0

2 years ago

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Find the measures of the angles in the diagram. 20 points for all of the ones listed below

Inessa [10]

AB is a diameter of the circle, so it divides circle into two semicircles.

Inscribed Angle Theorem:

The measure of an inscribed angle is half the measure of the intercepted arc.

An especially interesting result of the Inscribed Angle Theorem is that an angle inscribed in a semi-circle is a right angle. That's why m∠AQB=m∠ASB=m∠ALB=m∠ATB=m∠ARB=90°.

It is impossible to find measure of ∠BWD, its measure depends on measure of a central angle ∠WDB.

8 0

3 years ago

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