Answer:
not really good at maths. 15.33
Step-by-step explanation:
3(x-5)-7=3×8
3x-15-7=24
3x =24+15+7
3x = 46
Three will divide it's self to give you one and divide 46 to give you 15.333
(correct me if i'm wrong)
This simplified is 126x so that is equivalent to this expression
1. Given any triangle ABC with sides BC=a, AC=b and AB=c, the following are true :
i) the larger the angle, the larger the side in front of it, and the other way around as well. (Sine Law) Let a=20 in, then the largest angle is angle A.
ii) Given the measures of the sides of a triangle. Then the cosines of any of the angles can be found by the following formula:
a^{2}=b ^{2}+c ^{2}-2bc(cosA)
2.
20^{2}=9 ^{2}+13 ^{2}-2*9*13(cosA) 400=81+169-234(cosA) 150=-234(cosA) cosA=150/-234= -0.641
3. m(A) = Arccos(-0.641)≈130°,
4. Remark: We calculate Arccos with a scientific calculator or computer software unless it is one of the well known values, ex Arccos(0.5)=60°, Arccos(-0.5)=120° etc
The answer is 459
i hope this helps you
Proportionality to solve problems<span>, including those with tables and </span>graphs<span>. .... </span>Use<span> the recipe to write each </span>ratio<span> as a fraction in simplest form. ... 2 </span>Determine whether<span> the </span>ratios<span> 250 miles in 4 hours and 500 miles in. </span>8<span> .... Trees </span>Left<span> to Grow ... </span>Check<span> your </span>solution<span>. .... At this </span>rate<span>, how </span>many<span> faces can</span>she<span> paint in 40 minutes?</span>
