I think the answer is that what i think
1. the mean is 16
2. the mean is 22.5
the formula that can be used to calculate the mean is
= sum of terms/number of terms
for the first question the mean can be calculated as follows
sum of terms= 20+15+19+16+10
= 80
number of terms= 5
mean= 80/5
= 16
for the second question the mean can be calculated as follows
sum of terms= 19+23+11+30+27+27+22+26+16+24
= 225
number of terms= 10
mean= 225/10
= 22.5
Hence the mean for the first expression is 16 and the mean for the second expression is 22.5
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brainly.com/question/26159926?referrer=searchResults
20x - 30y = -50 ⇒ 20x - 30y = -50
x + 2y = -1 ⇒ <u>20x + 40y = -20</u>
<u>-70y</u> = <u>-30</u>
-70 -70
y = ³/₇
20x - 30(³/₇) = -50
20x - 12⁶/₇ = -50
<u> + 12⁶/₇ + 12⁶/₇
</u> <u>20x</u> = <u>47¹/₇
</u> 20<u /> 20<u>
</u> x = 2⁷/₂₀
(x, y) = (2⁷/₂₀, ³/₇)
Answer:
$2
Step by Step:
Four quarters is one dollar
Four quarters is 8 pennies
Multiply 8 by 25 (25 being the value of the quarters)
<em>2</em><em>5</em><em> </em><em>cents </em><em>is </em><em>times </em><em>four </em><em>is </em><em>one </em><em>dollar </em>
<em>.</em><em>2</em><em>5</em><em>x</em><em>4</em><em>=</em><em>1</em><em>,</em><em> </em><em>2</em><em>5</em><em>x</em><em>4</em><em>=</em><em>1</em><em>0</em><em>0</em><em>,</em><em> </em><em>1</em><em>0</em><em>0</em><em>x</em><em>.</em><em>2</em><em>5</em><em>=</em><em>2</em><em>5</em>
<em>2</em><em>x</em><em>4</em><em>=</em><em>8</em><em> </em><em>8</em><em>x</em><em>2</em><em>5</em><em>=</em><em>2</em><em>0</em><em>0</em>
Answer:
5 weeks
Step-by-step explanation:
32
21
week 1 over ^
34
26
week 2 over^
36
31
week 3 over ^
38
36
week 4 over ^
40
41
week 5 over ^
