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omeli [17]
3 years ago
14

9. Mary is running at a pace where it takes him 8 minutes to run one mile. Let T represent the time that Mary has run, in minute

s, and let D represent the distance he has run, in miles.
​
Mathematics
1 answer:
guapka [62]3 years ago
4 0

Answer:

rate that Mary has run:  D = 8T

Step-by-step explanation:

distance = rate × time

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Write two perfect squares that each have a value greater than100 and less than 200
Trava [24]

Answer:

121, 144

Step-by-step explanation:

√121= 11

√144= 12

6 0
2 years ago
Find the sum of the first 8 terms of the series. 1/2 + 1 + 2 + 4
Roman55 [17]

\bf \cfrac{1}{2}~~,~~\stackrel{2\cdot \frac{1}{2}}{1}~~,~~\stackrel{2\cdot 1}{2}~~,~~\stackrel{2\cdot 2}{4}~~,...

so as you can see the common ratio is 2, and the first term is 1/2,

\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad  \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ r=2\\ a_1=\frac{1}{2}\\ n=8 \end{cases} \\\\\\ S_8=\cfrac{1}{2}\left( \cfrac{1-2^8}{1-2} \right)\implies S_8=\cfrac{1}{2}\left( \cfrac{-255}{-1} \right)\implies S_8=\cfrac{255}{2}

4 0
3 years ago
Read 2 more answers
Help me please? c: I only have 4 questions left and I'm a bit stuck
prohojiy [21]
1.168 rounded off to nearest thousands = 1168
6 0
2 years ago
4) A line has a slope of -5 and passes through the point (2, 2). An equation for this line is
stich3 [128]

Answer:

D: y= -5x+12

Step-by-step explanation:

Since the slope is -5 is either C or D. Let's replace x= 2 in either to see what we get.

C: -5(2)-2 = -12 Nope.

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5 0
2 years ago
Help me please, guys <br>​
devlian [24]

Answer:

7.7

Step-by-step explanation:

The area of the wall is 4 * 2 = 8.

The radius of each clock is 0.3 / 2 = 0.15.

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8 - 0.3 = 7.7

3 0
3 years ago
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