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olganol [36]
3 years ago
5

Help me find the X please !! Thank youu

Mathematics
1 answer:
Elenna [48]3 years ago
5 0
We can use the vertical angle theorem which states that any two opposite angles are congruent. So, you can just set the two measures equal to each other and solve for x:
7x-99=2x+1
5x-99=1
5x=100
x =  \frac{100}{5} = 20

So, your answer is 20°.
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What is the place value of 9 in 42.97
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35PTS<br> Which expression is equivalent to
algol13

( a^6 b^ -3) ^ (1/3)

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3 years ago
A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) wa
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Answer:

The 98% confidence interval for the mean usage in the March quarter of 2006, in kWh, was (333.87, 416.13).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

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The lower end of the interval is the sample mean subtracted by M. So it is 375 - 41.13 = 333.87 kWh

The upper end of the interval is the sample mean added to M. So it is 375 + 41.13 = 416.13 kWh

The 98% confidence interval for the mean usage in the March quarter of 2006, in kWh, was (333.87, 416.13).

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3 years ago
Which expression is equivalent to -30 - 8x + 50 - 2x?
Makovka662 [10]

-10x + 20 should be the right answer.

6 0
2 years ago
Read 2 more answers
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