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soldier1979 [14.2K]
3 years ago
6

I-Ready | Construction of Triangles | Practice - Level G | Question 2

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0
B. Is correct I think. Hope this helped you
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New to function, may someone answer and explain?
Elenna [48]
Answer is number 2
F(3)= (3-1)^2+ 3(3)=4+9= 13 so the first option is wrong
F(-2)= (-2-1)^2+ 3(-2)= 9-6=3 third options is wrong
F(-15)= (-15-1)^2 +3(-15)= 256-45= 211 fourth option is wrong
8 0
2 years ago
On day two of a study on body temperatures, 106 temperatures were taken. Suppose that we only have the first 10 temperatures to
Hitman42 [59]

Answer:

The 95% confidence interval = (98.225, 98.655)

Step-by-step explanation:

The formula for Confidence Interval =

Mean ± z × standard deviation/√n

Where Mean = 98.44°F

Standard deviation = 0.30°F

n = number of samples is 10

Because our number if samples is small, we use the t score confidence interval formula

Mean ± t × standard deviation/√n

Degrees of Freedom = n - 1

= 10 - 1 = 9

We find the t score of 95% confidence interval and degrees of freedom 9

= 2.262

Hence,

Confidence interval = 98.44 ± 2.262 × 0.30/√10

= 98.44 ± 0.214592162

Confidence Interval

98.44 - 0.214592162

= 98.225407838

≈ 98.225

98.44 + 0.214592162

= 98.654592162

≈ 98.655

The 95% confidence interval = (98.225, 98.655)

5 0
3 years ago
The American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day. Legacy
Lunna [17]

Answer:

Reject H0 since test statistic <-2.492

Step-by-step explanation:

Given that the American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day.

n = 25

x bar = 69

s= 8.3

std error = s/sqrt n = \frac{8.3}{5} \\=1.66

H0:\bar x = 74

Ha: \bar x

(Left tailed test at 5% significance level)

a) Reject H0 if t\leq-2.492

b) Test statistic = mean difference/std error

= \frac{69-74}{1.66} \\=-3.012\\

=-3.01

df =24

c) Reject H0

6 0
3 years ago
Find the value of x. If necessary, round to the nearest tenth
andrew11 [14]
A = 1/2bh
40 = 1/2 x^2
x^2 = 80
    x = 8.9
3 0
3 years ago
Read 2 more answers
What is the slope of the line?
svetlana [45]

Answer:

The slope is 2

Step-by-step explanation:

From the y-intercept which is 1, to get to the next point, you would go up 2 and 1 right which is 2/1, and 2/1 is technically just 2.

Hope this helps and pls do mark me brainliest if you can:)

4 0
3 years ago
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