Answer:
y = 50
Step-by-step explanation:
All triangle angles add up to 180 degrees.
To set this equation up, you need to add everything given in the triangle and set it equal to 180:
y + y + 80 = 180
<em><u>Add like terms:</u></em>
2y + 80 = 180
<u><em>Subtract 80 from both sides:</em></u>
2y + 80 = 180
- 80 - 80
___________
2y = 100
<u><em>Divide both sides by 2:</em></u>
y = 50
<u><em>If you're unsure, you can plug in the 50 for y:</em></u>
y + y + 80 = 180
50 + 50 + 80 = 180
100 + 80 = 180
180 = 180
Answer:
an=n^3-n^2-6
Step-by-step explanation:
Salutations!
If seven pencils cost $.84 find the cost of 10 pencils?
Lets solve this!
To solve this question, you need to first divide .84 ÷ 7 which gives you the answer 0.12. Then multiply 0.12 with 10 which gives you the cost of 10 pencils. 0.12 is the cost of only one pencil.
Lets forms this into statements ---
Cost of 7 pencils = $ .84
Cost of 1 pencil = $ 0.12
Cost of 10 pencil equals = .84 ÷ 7 = 0.12
= 0.12 × 10 = 1.2
Cost of 10 pencils is $1.2
Hope I helped (:
Have a great day!
Answer:
(26.2252 ; 27.3748)
Step-by-step explanation:
The confidence interval is given by :
x ± Margin of error
The margin of error = Zcritical * (σ/√(n))
σ = 7.5 ; n = 654
Zcritical = Zα/2 = 1.96
The margin of error = 1.96 * (7.5/√654) = 0.5748
The confidence interval :
Upper boundary = 26.8 + 0.5748 = 27.3748
Lower boundary = 26.8 - 0.5748 = 26.2252
(26.2252 ; 27.3748)
We are 95% confident that the mean BMI of the entire population will fall in between (26.2252 ; 27.3748)
Answer:
<u>72 mm total and 10.29 mm average.</u>
Step-by-step explanation:
16 mm
14 mm
6 mm
3 mm
18 mm
5 mm
<u>10</u> <u>mm </u>
<u>72</u> mm total length
Divide by 7: 72/7 = <u>10.29</u> mm
