All categories

3 years ago

What is the y-value of the vertex of the function f(x)=-(x-3)(x+11)? -8 оооо

Mathematics

1 answer:

tigry1 [53]3 years ago

7 0

Answer:

Step-by-step explanation:

desmos is extremely helpful! :)

hope I could help

You might be interested in

There were 390 people in a cinema. There were 175 women and 215 men. Work out the percentage of men in a cinema.

Keith_Richards [23]

Answer:

55.13%

Step-by-step explanation:

Your comparison is 215 men out of 390 people.

Divide 215 by 390 and then multiply by 100 to get your percentage

215 ÷ 390 = 0.5513

0.5513 × 100 = 55.13%

5 0

3 years ago

Read 2 more answers

Logan has 4 2/3 cup of peanuts and 3 2/3 cup of cashews if you combine some nuts how much will he have

MA_775_DIABLO [31]

Answer: He will have 8 1/3 nuts

Step-by-step explanation:

Amount of peanuts=4 2/3 cups

Amount of cashews=3 2/3 cups

Combing the nuts will give Total amount of nuts ( peanuts and cashews)

=4 2/3 +3 2/3

=7 4/3

7 + 1 1/3

8 1/3 nuts

6 0

3 years ago

20% of the girls in class have blonde hair. 16 girls do not have blonde hair. How many total students

yawa3891 [41]

The problem is to find how many students have either blond hair or glasses and then divide that by the total number of students; that will find the probability.
Since 7 have blonde hair and 9 have glasses, that would be a total of 16 persons if there were no overlap; that is, no blonde wears glasses and nobody who wears glasses is a blonde.
But there are 4 persons who have both blond hair and wears glasses. That means, of the 7 who are blondes, 3 of them do not wear glasses. And, of the 9 who wear glasses, 5 of them are not blondes.
So we have 3 who are blondes without glasses, 5 who wear glasses who are not blondes, and 4 blonds with glasses, for a total of 12 persons.
The probability is, therefore, 12/26 or 6/13.

5 0

3 years ago

If f(x) = -x + 3x + 5 and g(x) = x2 + 2x, which graph shows the graph of (f +g)(x)? -

Lyrx [107]

Answer:

This is so easy

Let me explain:

first lets find out (f+g)(x)=-x+3x+5+x^2+2x=

x^2+4x+5 this is the equation of a parabola because we have x^2

so only the first graph shows us a parabola

which remains the right one.

6 0

3 years ago

High-power experimental engines are being developed by the Stevens Motor Company for use in its new sports coupe. The engineers

Maurinko [17]

Answer:

The 99% of a confidence interval for the average maximum HP for the experimental engine.

(536.46, 603.54)

Step-by-step explanation:

Step:-1

Given that the mean of the Population = 540HP

Given that the size of the sample 'n' = 9

Given that the mean of the sample = 570HP

Given that the sample standard deviation = 30HP

Step(ii):-

Degrees of freedom = n-1 =9-1 =8

t₀.₀₀₅ = 3.3554

The 99% of a confidence interval for the average maximum HP for the experimental engine.

$(x^{-} - t_{\frac{0.01}{2} ,8} \frac{S.D}{\sqrt{n} } ,x^{2} + t_{\frac{0.01}{2},8 } \frac{S.D}{\sqrt{n} } )$

$(570-3.354\frac{30}{\sqrt{9} } , 570+3.354\frac{30}{\sqrt{9} } )$

(570 - 33.54 , 570+33.54)

(536.46 , 603.54)

Final answer :-

The 99% of a confidence interval for the average maximum HP for the experimental engine.

(536.46, 603.54)

4 0

3 years ago