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4 years ago

Rearrange the equation e-5=2f to e=

Mathematics

1 answer:

irga5000 [103]4 years ago

3 0

-2f-5=-e

then you divide by the -1 to get the positive e

e=2f+5

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!!!!! PLEASE HELP ME !!!!!

goblinko [34]

Answer:

The correct option is C : x² + (y +3)² = 9 .

Step-by-step explanation:

We know that the general equation for a circle is ( x - h )² + ( y -k )²= r², Where,

r is the radius.
(h , k) is the center.

Let the point be ( 0 , -y) , since it is on negative y axis . And the circle passes through the origin that is (0,0) . Hence the center will be 3 units down the y - axis that is ( 0 , -3) .Hence h will be 0 and y = (-3) .

Now its given that the radius of the circle is 3. So on substituting r = 3 , in standard form we have ,

⇒ ( x -h )² + ( y - k )²= r²

⇒ ( x - 0)² + { y - (-3) }² = 3²

⇒ x² + ( y + 3) ² = 3²

⇒ x² + ( y + 3)² = 9

<h3>Hence the correct option is C [ x² + ( y+3)² = 9 ] .</h3>

Note that I have attached the graph of the same .

3 0

3 years ago

There are 12 counters in a bag.

IRISSAK [1]

Answer:

the probability is 8/12 or 67%

Step-by-step explanation:

two yellow counters and 6 green counters make up 8 of the 12 counters for the fraction of 8/12. 8 is 67% of 12.

idk if you do percentage or not but I did it anyway.

3 0

3 years ago

Each whole number from 0 to 9 is paired with its opposite. is this a function or not

dimaraw [331]

A function has the property that each element of the domain maps to only one element. For example, if there's ever the case where a relation includes point (1,2) and (1,3) then that relation is not a function. So for each case write down all the points as described. If one point in the domain ever maps to two different points, then it's not a function

8 0

3 years ago

Which of the equations below could be the equation of this parabola?

BARSIC [14]

Parabolas like $y=ax^2$ have the y-axis as their symmetry axis, so options B and D are surely wrong.

Moreover, parabolas like $x=ay^2$ have the x-axis as their symmetry axis. If $a>0$ the parabola is concave rightwards, if $a$ the parabola is concave leftwards.

Since your parabola is concave leftwards, the only feasible option is $x=-2y^2$

7 0

3 years ago

Simplify 7/21 ASAP (SHOW YOUR WORK)

KatRina [158]

7/21 can be simplified to 1/3 because 7 divided by 7 equals 7 and 21 divided by 7 equals 3.

4 0

3 years ago