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n200080 [17]
3 years ago
11

BRAINLIEST GOES TO THE CORRECT ANSWER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Nostrana [21]3 years ago
7 0

Answer:

11.99

Step-by-step explanation:

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Evaluate this expression 33+(-5)-(-70)-26
SVETLANKA909090 [29]

Answer:

82

Step-by-step explanation:

33 + (-5) - (-70) - 26

33 - 5 + 70 - 26

- and - = +

- and + = -

+ and - = -

33 -5 = 28

28 + 70 = 108

108 - 26 = 82

8 0
3 years ago
Which of the following is the solution to the equation x^2-36x=0
Marizza181 [45]
x^2-36x=0 \\
x(x-36)=0 \\
x=0 \ \lor \ x-36=0 \\
x=0 \ \lor \ x=36 \\
\boxed{x=0 \hbox{ or } x=36}
7 0
4 years ago
Read 2 more answers
I am doing homework can I please get some help?
Arada [10]

Answer:

i need point

Step-by-step explanation:

popopopo

5 0
3 years ago
A freight ship has been moving at 19 miles per hour for the past 2 days. Hugo recorded that the ship moved 155 miles yesterday a
Sonbull [250]

Answer:

13 hours

Step-by-step explanation:

155 + 92 = 247

247 / 19 = 13

4 0
2 years ago
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past
Minchanka [31]
<h2><u>Answer with explanation</u>:</h2>

Let \mu be the distance traveled by deluxe tire .

As per given , we have

Null hypothesis : H_0 : \mu \geq50000

Alternative hypothesis : H_a : \mu

Since H_a is left-tailed and population standard deviation is known, thus we should perform left-tailed z-test.

Test statistic : z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

where, n= sample size

\overline{x}= sample mean

\mu= Population mean

s=sample standard deviation

For n= 31,\ \sigma=8000,\ \overline{x}=46,800\ \&\ s=46,800, we have

z=\dfrac{46800-50000}{\dfrac{8000}{\sqrt{31}}}=-2.23

By using z-value table,

P-value for left tailed test : P(z≤-2.23)=1-P(z<2.23)   [∵P(Z≤-z)=1-P(Z≤z)]

=1-0.9871=0.0129

 Decision : Since p value (0.0129) < significance level  (0.05), so we reject the null hypothesis .

[We reject the null hypothesis when p-value is less than the significance level .]

Conclusion : We do not have enough evidence at 0.05 significance level to support the claim that t its deluxe tire averages at least 50,000 miles before it needs to be replaced.

4 0
3 years ago
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