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Mademuasel [1]
3 years ago
15

Please help me asnwer this question

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
8 0
It would take 55 Minutes
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What is the domain of square root x+6 substract 7
creativ13 [48]
Y=√(x+6) - 7

constraint: x+6> or = 0
or x> 0r = -6
RANGE = x∈R/ x > or = 0
3 0
3 years ago
A survey of 32 different gas stations in Texas found the average price of gasoline to be $3.19 a gallon with a sample standard d
Leni [432]

Answer:

The value of test statistic is -4.1247

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $3.26 a gallon

Sample mean, \bar{x} = $3.19 a gallon

Sample size, n = 32

Sample standard deviation, σ = $0.096

First, we design the null and the alternate hypothesis

H_{0}: \mu = 3.26\text{ dollars a gallon}\\H_A: \mu < 3.26\text{ dollars a gallon}

We use one-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{3.19 - 3.26}{\frac{0.096}{\sqrt{32}} } = -4.1247

Thus, the value of test statistic is -4.1247

3 0
3 years ago
The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 7 to 4. If there were 4
Elena-2011 [213]

Answer:

2628

Step-by-step explanation:

7/4 = 1.75 = 175%

x is the number of no votes

4599/x = 7/4

x = 4599/(7/4)

x = 2628

5 0
2 years ago
Guys I need help on all three please​
kodGreya [7K]

Answer:

graph 1 proportional

graph 2&3 is non proportional

i think

6 0
3 years ago
Find two numbers that up to 158. The greater number is 40 more than the lesser number.
snow_tiger [21]
99 and 59

X=big number
X-40 = small

X+ x-40 =158
2X -40=158
2X =198
X=99. Big number is 99
99-40 =59

99+59=158
3 0
3 years ago
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