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Dima020 [189]
3 years ago
9

Help? (only people who know what they're doing please)

Mathematics
1 answer:
Temka [501]3 years ago
7 0
X would equal 2.7 //////////////
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Pls help!!!!!!!!!!!!!!!!!!
pochemuha

Answer:

x = 8

Step-by-step explanation:

All sides are equal in terms of symmetry, such as the 5 and 5 opposite the angle 120 that repeats itself at the centre 3 times

6 0
2 years ago
Read 2 more answers
Im having trouble with this :(
MrRa [10]
The answer is plus 4 because a positive plus a negative is a negative
5 0
3 years ago
There are 3 feet in a yard. If a shoe measures to be 1 ft. What fraction of a<br> yard is that?
Alexus [3.1K]
1/3
because a foot is a third of a yard and a yard is 3 feet.
7 0
3 years ago
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A customer service phone line claims that the wait times before a call is answered by a service representative is less than 3.3
Vika [28.1K]

Answer:

(A) Yes, since the test statistic is in the rejection region defined by the critical value, reject the null. The claim is the alternative, so the claim is supported.

Step-by-step explanation:

Null hypothesis: The wait time before a call is answered by a service representative is 3.3 minutes.

Alternate hypothesis: The wait time before a call is answered by a service representative is less than 3.3 minutes.

Test statistic (t) = (sample mean - population mean) ÷ sd/√n

sample mean = 3.24 minutes

population mean = 3.3 minutes

sd = 0.4 minutes

n = 62

degree of freedom = n - 1 = 62 - 1 = 71

significance level = 0.08

t = (3.24 - 3.3) ÷ 0.4/√62 = -0.06 ÷ 005 = -1.2

The test is a one-tailed test. The critical value corresponding to 61 degrees of freedom and 0.08 significance level is 1.654

Conclusion:

Reject the null hypothesis because the test statistic -1.2 is in the rejection region of the critical value 1.654. The claim is contained in the alternative hypothesis, so it is supported.

5 0
3 years ago
geomatry) Pleasee help I'll give brainest and thanks :)Also please don't answer if you don't know!! Thanks in advance
Iteru [2.4K]

Answer:

x = 50°

Step-by-step explanation:

sum of all angles of a quadrilateral is 360°

so, the other unknown angle be y

=》y + 40° + 110° + 80° = 360°

=》y + 230° = 360°

=》y = 360° - 230° = 130°

and the unknown angle + x = 180°

( because they for linear pair )

so, x + y = 180°

x + 130° = 180°

x = 180° - 130° = 50°

hence, x = 50°

8 0
3 years ago
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