3 years ago

Represent the equation: 2x + 3 = 11

Mathematics

2 answers:

Otrada [13]3 years ago

7 0

Answer:

Step-by-step explanation:

2x+3=11

so take 3 and subtract it from 11

you'll get 8

then take 2x and divide it by 8

= 4

FromTheMoon [43]3 years ago

3 0

Answer: x=4

Step-by-step explanation:

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3 years ago

Maria had $22 to spend on five pencils. After buying them she had $12. How much did each pencil cost?

NemiM [27]

Answer:

Step-by-step explanation:

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22-12 = 5x

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2 years ago

At the movie theatre, child admission is $6.10 and adult admission is $9.90. On Friday, four times as many adult tickets as chil

Lena [83]

Answer:

26 child tickets

Step-by-step explanation:

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7 0

3 years ago

What is the equation of the parabola in vertex form with vertex (2,-4) and directrix y=-6

Pachacha [2.7K]

Answer:

$y=\dfrac{1}{8}(x-2)^2-4$

Step-by-step explanation:

The directrix y=-6 is parallel to the x axes, so parabola has equation of the form

$(x-x_0)^2=2px(y-y_0),$

where $(x_0,y_0)$ is the vertex of parabola and p is parabola's parameter.

By the definition, $\frac{p}{2}$ is the distance from the vertex to the directrix, so

$\dfrac{p}{2}=2\Rightarrow p=4$

Hence, the equation of parabola is

$(x-2)^2=8(y+4)$

See attached diagram for the graph of parabola and its directrix.

In vertex form this equation is

$y=\dfrac{1}{8}(x-2)^2-4$

8 0

4 years ago

What is the answer to this question

ss7ja [257]

Answer: about 34.6

Step-by-step explanation: 11 is the radius, but you need the diameter which is 22. multiply 22 by pi and divide that number by 2 since it is half a circle.

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4 years ago