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Lena [83]
3 years ago
6

ASAP (only the answer pls)

Mathematics
1 answer:
atroni [7]3 years ago
3 0

Answer:

B..........................................

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Create a unique parabola in the pattern f(x)=(x-a)(x-b). Pick integers other than one or zero for a and b. let a= 1 and b= 2 f(x
kotegsom [21]

Answer:

a) parabola opens upwards  

b) y-intercept    y = 2

c) x₁ = 1         x₂  =  2

Step-by-step explanation:

y = x² - 3x + 2

This  parabola is open upwards since the coefficient of x² is positive (1)

b) y-intercept is when  x = 0 then

y = (0)² - 3*(0) + 2

y-intercept    y = 2

to determine zeros,  we can proceed as follows

x² - 3x  + 2 = 0

Factoring that xpression

( x -1 ) * ( x - 2 ) = 0

Then either   x- 1  =  0   and    x₁ = 1        or

x  -  2  =  0      and       x₂  =  2

8 0
3 years ago
Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was
Marizza181 [45]

Answer:

The raw score for his exam grade is 99.69.

Step-by-step explanation:

Given : The professor announced that the mean for the class final exam was 88 with a standard deviation of 7. Given Daniel's z score of 1.67.

To find : What is the raw score for his exam grade?

Solution :

The formula use to find the z-score is

z=\dfrac{x-\mu}{\sigma}

Where, z=1.67 is the z-score

\mu=88  is the means

\sigma=7 is the standard deviation

x  is the raw score for his exam grade

Substitute the values,

1.67=\dfrac{x-88}{7}

1.67\times 7=x-88

11.69=x-88

x=88+11.69

x=99.69

Therefore, the raw score for his exam grade is 99.69.

7 0
3 years ago
Your school counselor has given you clear directions that you and your best friend should not be seen within 240 feet of each ot
FrozenT [24]

Answer:

1. 80 yd

2. 10 and 10 of the other side

3. yes

Step-by-step explanation:

1. As we were asked to stay 240 feet away, and we will be on a soccer field and it has marked distances in yards we just have to pass our feet to yards.

1 ft = 1/3 yd

240 ft = 240/3 yd

240 ft =  80 yd

2. one would have to stand in yard 10 and the other in yard 10 but from the other side of the field

50-10 = 40

40 + 40 = 80 yd

3.  

if they are diagonally the distance will be greater than 80, since the yards are parallel, because only the distance would remain only if they are on the same height

5 0
3 years ago
There are 8 blue marbles, 3 red marbles, and 4 yellow marbles in a bag. What is the probability of selecting a purple marble on
andreyandreev [35.5K]

Answer:

0

Step-by-step explanation:

there is only blue marbles, yellow marbles, and red marbles. there are no purple marbles so you’d be unable to pull out a purple one no matter how many times you tried. so the probability would be 0

6 0
3 years ago
Read 2 more answers
PLS HELP!!!! Pointtssss!! The temperature during a very cold day is
grin007 [14]

The type of polynomial that would best model the data is a <em>cubic</em> polynomial. (Correct choice: D)

<h3>What kind of polynomial does fit best to a set of points?</h3>

In this question we must find a kind of polynomial whose form offers the <em>best</em> approximation to the <em>point</em> set, that is, the least polynomial whose mean square error is reasonable.

In a graphing tool we notice that the <em>least</em> polynomial must be a <em>cubic</em> polynomial, as there is no enough symmetry between (10, 9.37) and (14, 8.79), and the points (6, 3.88), (8, 6.48) and (10, 9.37) exhibits a <em>pseudo-linear</em> behavior.

The type of polynomial that would best model the data is a <em>cubic</em> polynomial. (Correct choice: D)

To learn more on cubic polynomials: brainly.com/question/21691794

#SPJ1

6 0
2 years ago
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