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scoray [572]
4 years ago
7

Re-write the quadratic function below in Standard Form y = -7(x + 9) (x - 1)

Mathematics
1 answer:
iogann1982 [59]4 years ago
5 0

Answer:

-7x squared -56x+63.

Step-by-step explanation:

Hope this helps!

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Which lengths make sense for possible values of b
Lerok [7]

The first condition is for the perimeter of the equation so:

P=2a+b=15.7

Now the secon condition is that the sum of two sides should be:

\begin{gathered} a+b>b \\ b+b>a \end{gathered}

so the negative option and 0 don't make sence dor a distance, then we try with the value of b=0.5

So in the first equation will be:

\begin{gathered} 2a+0.5=15.7 \\ 2a=15.2 \\ a=7.6 \end{gathered}

So the condition:

\begin{gathered} b+b>a \\ 0.5+0.5>7.6 \end{gathered}

this is false, so the solution is

8 0
2 years ago
According to government data, the probability that an adult was never in a museum is 15%. In a random survey of 10 adults, what
leonid [27]

Answer: 0.8202

Step-by-step explanation:

Probability an adult was never in a museum = probability of success = p = 15% = 0.15

To find probability that 2 or fewer of the 10 samples selected were never in a museum is given by:

P(X=2) or P(X=1) or P(X=0).

Where

P(X=r) = nCr * p^r * q^n-r

and n=10, p =0.15, q=0.85

When r = 2

P(X=2) = 10C2 * 0.15² * 0.85^8 = 0.2759

When r = 1

P(X=1) = 10C1 * 0.15 * 0.85^9 = 0.3474

When r = 0

P(X=0)= 10C0 * 0.15^0 * 0.85^10 = 0.1969

Hence probability of having 2 or fewer adults who never visited the museum = 0.1969 + 0.3474+ 0.2759 = 0.8202

6 0
4 years ago
Find a common factor in 15 and 35
IgorLugansk [536]
The common factors are 1 and 5.15:\boxed {1}, 3, \boxed {5}, 15\\35:\boxed {1,5},7,35
5 0
3 years ago
Emily makes 75 pins to sell at the school craft fair. She has two designs: a star and a bumblebee. She makes 2 star pins for eve
Elodia [21]
45 bumblebee, 30 star.
2:3 = 5
75/5 = 15
15 X 2= 30
15 X 3= 45
8 0
3 years ago
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HELP I DONT GET THIS! <br> 10 POINTS!!! MARK BRAINLIEST!
Arisa [49]

Answer:

scale factor is 1/7

Step-by-step explanation:

I am smart

7 0
3 years ago
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