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julsineya [31]
3 years ago
7

If You can answer i will make you the brainliest and give you 100 points

Mathematics
2 answers:
Mazyrski [523]3 years ago
6 0
Jordan got an 81% .

how to figure out mean: 66,79,81,82 .

Add 79 and 81, which is 160/2=80%
You'll so be able to figure this out, because Jordans percent grade has to be lower than 82, and higher than 79. Therefore, you'll have to come up with a number that is higher than 79, but lower than 81. and first you have to come up with a number that will equal to 160 when you add it by 79. so, 160-79 = 81% which is also known as Jordan's grade. therefore the answer is, 81% dot Hope this helped!!
gizmo_the_mogwai [7]3 years ago
4 0
The answer would be 93% because first we need to do the reverse of how to find the mean... 80 * 4 = 320 and so we just have to subtract the grades from 320... 320 - 79 - 66 - 82 = 93... Thus Jordan's grade was 93
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This is a geometry question, i need something quickly :)
Marysya12 [62]

Answer:

hope it helps mark me brainlieast!

Step-by-step explanation:

<em>For triangle ABC with sides  a,b,c  labeled in the usual way, </em>

<em> </em>

<em>c2=a2+b2−2abcosC  </em>

<em> </em>

<em>We can easily solve for angle  C . </em>

<em> </em>

<em>2abcosC=a2+b2−c2  </em>

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<em>cosC=a2+b2−c22ab  </em>

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<em>C=arccosa2+b2−c22ab  </em>

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<em>That’s the formula for getting the angle of a triangle from its sides. </em>

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<em>The Law of Cosines has no exceptions and ambiguities, unlike many other trig formulas. Each possible value for a cosine maps uniquely to a triangle angle, and vice versa, a true bijection between cosines and triangle angles. Increasing cosines corresponds to smaller angles. </em>

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<em>−1≤cosC≤1  </em>

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<em>0∘≤C≤180∘  </em>

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<em>We needed to include the degenerate triangle angles,  0∘  and  180∘,  among the triangle angles to capture the full range of the cosine. Degenerate triangles aren’t triangles, but they do correspond to a valid configuration of three points, namely three collinear points. </em>

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<em>The Law of Cosines, together with  sin2θ+cos2θ=1 , is all we need to derive most of trigonometry.  C=90∘  gives the Pythagorean Theorem;  C=0  and  C=180∘  give the foundational but often unnamed Segment Addition Theorem, and the Law of Sines is in there as well, which I’ll leave for you to find, just a few steps from  cosC=  … above. (Hint: the Law of Cosines applies to all three angles in a triangle.) </em>

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<em>2sinAsinBcosC=sin2A+sin2B−sin2C  </em>

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<em>Showing that’s the same as  A+B+C=180∘  is a challenge I’ll leave for you. </em>

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<em>In Rational Trigonometry instead of angle we use spreads, squared sines, and the squared form of the formula we just found is the Triple Spread Formula, </em>

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<em>4sin2Asin2B(1−sin2C)=(sin2A+sin2B−sin2C)2  </em>

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<em>true precisely when  ±A±B±C=180∘k , integer  k,  for some  k  and combination of signs. </em>

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<em>(a+b−c)2=4ab(1−c)  </em>

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<em>Very tidy. It’s an often challenging third degree equation to find the spreads corresponding to angles that add to  180∘  or zero, but it’s a whole lot cleaner than the trip through the transcendental tunnel and back, which almost inevitably forces approximation.</em>

6 0
2 years ago
Tell what property or properties are shown. (5 + 23) + 21= 5+ (23 + 21)
Verizon [17]

Answer:

Yuhh the answers c dawhggg trus me i just did the same thing lawl!

Step-by-step explanation:

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3 years ago
Mahni plans to spend the next 12 weeks saving some of her income. She will save $x a week for the first 6 weeks and then $(2x −
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$x=213$

For first six weeks she saved 213$

Now

For next 6weeks

\\ \sf\longmapsto 2x-30=2(213)-30=426-30=396\$

Total savings:-

.\\ \sf\longmapsto 396+213=609\$

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2 years ago
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3 years ago
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user100 [1]

Answer:

m = $25

Step-by-step explanation:

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3 years ago
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