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stealth61 [152]
3 years ago
15

Cora ran 5 miles last month and will run ½ miles per week for the next 2.5 months. Hana ran 3 miles last month and will run ¾ mi

les per week for the next 2.5 months.
Mathematics
1 answer:
Mashutka [201]3 years ago
5 0

Step-by-step explanation:

if Cora runs 1/2 mile per week and x is the number of weeks, then she will run 5+1/2x.

then determine how many weeks are in two and a half months ( depends on which month it is as there are less weeks in February than in January) but we could estimate 6.

for hana you will have 3+ 3/4x

first equation is y=5+ 1/2x and then plug 6 in for x to solve for y. the second equation is y=3+ 3/4x and plug in 6

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Granny smith's pie has a diameter of 8 inches what is the pie's area
Aleonysh [2.5K]

Answer:

50.27 square inches (in²)

Step-by-step explanation:

Area = π·r2 = 3.14·42 = 50.27 square inches(*)

d = 8

C = 25.1

A = πr2 = π(d

A = _C²_

        4π

π = 3.1415

A = area

C = circumference or perimeter

r = radius, d = diameter

4 0
3 years ago
HELP FAST!!!!
Natasha2012 [34]
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7 0
3 years ago
The crime rate in New York City has been steadily dropping over the past decades. In 1970, the murder rate was 15.8 per 100,000
mario62 [17]
\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}\\\\
-------------------------------

\bf \begin{array}{ccll}
\stackrel{period}{year}&\stackrel{per~10000}{crime}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1970&15.8\\
2012&3.5
\end{array}
\implies \cfrac{f(b)-f(a)}{b-a}\implies \cfrac{3.5-15.8}{2012-1970}\implies -\cfrac{12.3}{42}
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5 0
4 years ago
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Vlada [557]
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6 0
3 years ago
Read 2 more answers
40 POINTS AND BRAINLIEST!! Solve for x in the following equations..
wolverine [178]

Answer:

a) x = 3

b) x = 10

c) x = 28

Explanation:

a)

\sf 6x + 3 = 21

collect term

\sf 6x  = 21-3

simplify

\sf 6x  = 18

divide both both sides by 6

\sf x = 3

b)

\sf 15(x - 5) = 75

distribute

\sf 15x - 75 = 75

collect terms

\sf 15x  = 75 + 75

combine

\sf 15x  = 150

divide both sides by 15

\sf  x = 10

c)

\sf \frac{3}{4} x +5 = 26

collect like terms

\sf \frac{3}{4} x  = 26-5

combine

\sf \frac{3}{4} x  = 21

cross multiply

\sf x = \frac{ 21 (4)}{3}

simplify

\sf x =28

6 0
2 years ago
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