All categories

3 years ago

Which polynomial function could be represented by the graph below? Help please

Mathematics

1 answer:

AfilCa [17]3 years ago

8 0

Answer:

$f(x)=2x^2+2x-4$

Step-by-step explanation:

You might be interested in

Solve for x. What is the solution to the system of equations?<br> ( <br> , <br> )

labwork [276]

(3,-2) hope this helps Yall

5 0

3 years ago

Please help me asap

Leto [7]

1. D 12 2/7
2. 22 7/9 which is B hope this helps

7 0

3 years ago

Write the equation of a line with a slope of 5 that passes through the point (3,1)

Brut [27]

Answer:

y-1=5(x-3)

Step-by-step explanation:

y=mx+b where m=slope and b=y-intercept,

y-y1=m(x-x1)

y-1=5(x-3)

5 0

3 years ago

The ticket booth at a school play sells 170 adult tickets and 150 student tickets. find the ratio of adults to students. write y

insens350 [35]

170:150
17:5
17/5
3 2/5

6 0

3 years ago

A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari

guajiro [1.7K]

Answer:

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

$F_{critical} = 1.8608$

$F = 2.9085$

The decision rule is

Reject the null hypothesis

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 30$

The sample variance for elementary school is $s^2_1 = 8324$

The second sample size is $n_2 = 30$

The sample variance for the secondary school is $s^2_2 = 2862$

The significance level is $\alpha = 0.05$

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

Generally from the F statistics table the critical value of $\alpha = 0.05$ at first and second degree of freedom $df_1 = n_1 - 1 = 30 - 1 = 29$ and $df_2 = n_2 - 1 = 30 - 1 = 29$ is

$F_{critical} = 1.8608$

Generally the test statistics is mathematically represented as

$F = \frac{s_1^2 }{s_2^2}$

=> $F = \frac{8324 }{2862}$

=> $F = 2.9085$

Generally from the value obtained we see that $F > F_{critical }$ Hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to support the researchers claim

4 0

3 years ago