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2 years ago

8

This year Reuben watched 80 movies. He thought that 68 of them were very good. Of the movies he watched, what percentage did he

rate as very good?

2 answers:

Leya [2.2K]2 years ago

7 0

Answer:

He thought that 85% of them were very good.

professor190 [17]2 years ago

6 0

Answer:

85%

Step-by-step explanation:

Divide 68 by 80

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Which equation represents a parabola that opens upward, has a minimum at x = 3, and has a line of symmetry at x = 3?

densk [106]

Answer:

$A.\ y = x^2 - 6x + 13$ is the correct answer.

Step-by-step explanation:

We know that vertex equation of a parabola is given as:

$y = a(x-h)^2+k$

where $(h,k)$ is the vertex of the parabola and

$(x,y)$ are the coordinate of points on parabola.

As per the question statement:

The parabola opens upwards that means coefficient of $x^{2}$ is positive.

Let $a = +1$

Minimum of parabola is at x = 3.

The vertex is at the minimum point of a parabola that opens upwards.

$\therefore$ $h = 3$

Putting value of a and h in the equation:

$y = 1(x-3)^2+k\\\Rightarrow y = (x-3)^2+k\\\Rightarrow y = x^2-6x+9+k$

Formula used: $(a-b)^2=a^{2} +b^{2} -2\times a \times b$

Comparing the equation formulated above with the options given we can observe that the equation formulated above is most similar to option A.

Comparing $y = x^2 - 6x + 13$ and $y = x^2-6x+9+k$

13 = 9+k

k = 4

Please refer to the graph attached.

Hence, correct option is $A.\ y = x^2 - 6x + 13$

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3 years ago

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There are 13 vans and 12 buses with 767 students at high school. And at high school B there are 8 vans and 6 buses with 400 stud

eimsori [14]

U have to divide to get the answer

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allsm [11]

Answer:

wow.

Step-by-step explanation:

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2 years ago

Simplify 0.2 : 0.35.

devlian [24]

Answer:

0.2 : 0.35 -> 4/7

Hope this helps!

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3 years ago

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icang [17]

Answer:

6 cups of flour, 2 cups of sugar, and 4 cups of chocolate chips <3

Step-by-step explanation:

Because you're only making 2 dozen, simply multiply everything by 2 and you'll get the answer of 6 cups of flour, 2 cups of sugar, and 4 cups of chocolate chips!!! hoped this helped and feel free to ask any questions abt this :-)

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2 years ago