1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katrin [286]
3 years ago
14

X2 – 2x – 17 = 0 Factoring

Mathematics
2 answers:
denpristay [2]3 years ago
6 0

Answer:

It around 2 or 2.5

Step-by-step explanation:

Its simple

castortr0y [4]3 years ago
3 0
It is around 2 or 2.5
You might be interested in
1cm is equal to how much kilometers
Paladinen [302]
1 cm cant equal 1 km
because 1km = 100 cms
8 0
3 years ago
Which of the following details are not necessary when booking a flight
mestny [16]

Social Security number

8 0
3 years ago
Three less than the quotient of ten and a number, increased by six” when n = 2?
Musya8 [376]
(10/n  +6) -3
10/2+6-3
5+6-3
11-3
8
Hope this helped!
3 0
3 years ago
Read 2 more answers
The U.S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites born in 1900 and 33.0 years
inn [45]

Answer:

b. The null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2\neq 0

c. Student's t distribution, as it is a two-sample test for the difference between means.

d. Test statistic t = 5.42.

P-value = 0

e. They appear to be significantly different, as the sample data gives strong evidence that the difference is greater than 0.

Step-by-step explanation:

This is a hypothesis test for the difference between populations means.

The claim is that the mean life spans in the county is significantly different for whites and nonwhites.

Then, the null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2\neq 0

The significance level is 0.05.

The sample 1 (white), of size n1=124 has a mean of 45.3 and a standard deviation of 12.7.

The sample 2 (non-white), of size n2=82 has a mean of 34.1 and a standard deviation of 15.6.

The difference between sample means is Md=11.2.

M_d=M_1-M_2=45.3-34.1=11.2

The estimated standard error of the difference between means is computed using the formula:

s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{12.7^2}{124}+\dfrac{15.6^2}{82}}\\\\\\s_{M_d}=\sqrt{1.301+2.968}=\sqrt{4.269}=2.066

Then, we can calculate the t-statistic as:

t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{11.2-0}{2.066}=\dfrac{11.2}{2.066}=5.42

The degrees of freedom for this test are:

df=n_1+n_2-2=124+82-2=204

This test is a two-tailed test, with 204 degrees of freedom and t=5.42, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=2\cdot P(t>5.42)=0.0000002

As the P-value (0.0000002) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the mean life spans in the county is significantly different for whites and nonwhites.

4 0
3 years ago
Given a possible triangle ABC with a=5, b=11, and A=23 degrees, find a possible value for angle b. Round to the nearest tenth.
Stels [109]
<span>b. Round to the nearest tenth.  please mark brainly</span>
6 0
3 years ago
Other questions:
  • What is the value of the expression q+39 when q
    13·1 answer
  • What is the place value of 000.001
    10·1 answer
  • Hellllllllłllllllllllllllllllllllllllllllllllpp
    14·2 answers
  • Evaluate 6 + 4/a + b/3 when a=4 and b=3
    9·1 answer
  • The original price is $3.00 and the store dismount is 25% what is the discounted price?
    5·1 answer
  • A new amusement-park ride that lasts 1 minute can have up to 1200 riders per hour. How many riders can ride per minute?
    10·1 answer
  • Simplify. Evaluate the numerical bases. 3^2 b^2 c^-4 *3^-1 b^-5 c^7
    8·1 answer
  • Please help with these 5 questions about trinomials. Thank you so much! :)
    15·1 answer
  • SOMEONE HELP !!!!!!!!!!
    10·1 answer
  • A scale for a map states that 2 inches equals 25 miles. If the distance from Dallas to Houston on the map is 19.2 inches, what i
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!