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attashe74 [19]
3 years ago
7

You have a supplementary angle. If angle A is 161 degrees, what is the degree measure of angle B? *

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

Angle B=19°

Step-by-step explanation:

Hope this helps u...

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Describe and correct the error in finding the tenth term of the arithmetic sequence 4, 12, 20, 28.
ycow [4]

Answer: The tenth term is 76

=======================================================

Explanation:

We use this arithmetic sequence formula to get the nth term

a_n = a_1 + d(n-1)

Plug in a_1 = 4, \ d = 8, \ n = 10 and you should get the following:

a_n = a_1 + d(n-1)\\\\a_{10} = 4 + 8(10-1)\\\\a_{10} = 4 + 8(9)\\\\a_{10} = \textbf{76}\\\\

The tenth term is <u>76</u>

---------

We can verify this by listing out the terms one by one. Start at 4, add on 8 each time, until you generate the 10th term. A table like the one shown below is a good way to keep track of all the terms.

\begin{array}{c|c}\boldsymbol{n} & \boldsymbol{a_n}\\1 & 4\\2 & 12\\3 & 20\\4 & 28\\5 & 36\\6 & 44\\7 & 52\\8 & 60\\9 & 68\\10 & \textbf{76}\\\end{array}

---------

In short, the error is with the "10" in the expression 4+10(8). The student should have used 9 instead. This is because of the n-1 term in a_n = a_1 + d(n-1) which shifts everything one spot to the left.

7 0
2 years ago
Task;2round off the following numbers to the highest place value.
eimsori [14]

Answer:

1.) 434 ____________

2.)5658 ____________

3.) 8374 ____________

4.) 361 ____________

5.) 7454 ____________

ito po ba ang i raround off

Step-by-step explanation:

answer:

1. 400

2.5000

3.8000

4.400

5.7000

kung ito po

#HOPE ITS HELP

7 0
2 years ago
What is the exact value of tan (9 pi)/12
kow [346]

Answer:

tan(9pi/12) = 0.041146549

Step-by-step explanation:

3 0
3 years ago
A math teacher gave her students two tests. On the first test, 80% of the class passed the test, but only 30% of the class passe
geniusboy [140]

55% because you add 80% and 30% which is 110% and divide that by 2.

6 0
3 years ago
Geometry Question Please Help!!!!
lora16 [44]
The equation of a parabola is given by f(x)=a(x-h)^{2}+k where (h,k) is the vertex.

We have the vertex is (-3,-2) so we have h=-3 and k=-2

Substituting -3 and -2 into the f(x)
f(x)=a(x--3)^{2}+(-2)
f(x)=a(x+3)^{2}-2

Hence, the correct answer is option D
5 0
3 years ago
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