Write an th explicit formula for an the n term of the sequence 15, 13, 11, ....

Mathematics

2 answers:

Alborosie3 years ago

4 0

Answer:

n=-2

Step-by-step explanation:

Because when you are looking at the numbers they drop by two, so the answer must be decreasing by n= -2.

Misha Larkins [42]3 years ago

3 0

Answer:

17-2n

Step-by-step explanation:

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One number is eight more than twice another. If their difference is 25, what is the larger number?

Vladimir79 [104]

You can set up an system of equations
x=2y+8
x-y=25

Substitute x in to the second equation
2y+8-y=25
y+8=25
y=17

Substitute the y back in to the first equation.
x=2(17)+8=42

7 0

3 years ago

39545 rounded to the nearest thousand

KATRIN_1 [288]

It would be 40,000 if you rounded up

6 0

3 years ago

Read 2 more answers

*****50 POINTSSSS*****

defon

Answer:

<h3>Given</h3>

m∠REG = 78°
mAR = 46°
ER ≅ GA

<h3>Solution</h3>

m∠GAR = 180° - m∠REG = 180° - 78° = 102° (supplementary angles sum to 180°)
m∠TAR = 1/2mAR = 1/2(46°) = 23° (tangent chord angle is half the size of intercepted arc)
m∠GAN = 180° - (m∠TAR + m∠GAR) = 180° - (23° + 102°) = 55° (straight angle is 180°)
mAG = 2m∠GAN = 2(55°) = 110°
mRE = mAG = 110° (as ER ≅ GA)
mGE = 360° - (mAG + mAR + mRE) = 360° - (110° + 46° + 110°) = 94° (full circle is 360°)