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m_a_m_a [10]
2 years ago
5

9 + a = 113 find the solution

Mathematics
1 answer:
alukav5142 [94]2 years ago
5 0

Answer: a=104

Step-by-step explanation:

104+9=113

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At a 3​-mile ​cross-country race, an athlete runs 2 miles at 6 mph and 1 mile at 12 mph. What is the​ athlete's average​ speed?
Tom [10]

Answer: the average speed is 7.5 mph or at least im pretty sure

Step-by-step explanation:

This is because if you make the 2 miles at 6 mph to 1 mile at 3 mph then you get 1 mile at 3mph and 1 mile at 12 mph. now that you have the unit rates of these you can add them. 1 + 1 = 2 miles and 3 + 12 = 15 mph now divide this by two and you get 7.5 mph per mile.

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3 years ago
3 ( X + 6 ) = 24 <br> What is X
neonofarm [45]
X = 2 hope this helps :D
6 0
3 years ago
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-3x^2 – 24x – 13 = -13
Fudgin [204]
\begin{gathered} -3x^2-24x-13=-13 \\ \text{ Express it as:} \\ 3x^2+24x+26=0 \\ 3x^2+24x=-26 \\ 3(x^2+8x+16)=?-26 \\ 3(x+4)^2=48-26 \\ 3(x+4)^2=22 \end{gathered}

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3 0
1 year ago
Please answer within 7 minutes !!
Gnesinka [82]

Step-by-step explanation:

x = by - 3/2

x + 3/2 = by

y = x/b + 3/(2b)

now compare this to the first equation :

y = 2x + 3

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and they are only identical, if b = 1/2

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3 0
2 years ago
Taylor wants to paint his rectangular deck that is 44 feet long and 32 feet wide. A gallon of paint
Sladkaya [172]

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4.02 gallons of paint

Step-by-step explanation:

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6 0
3 years ago
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