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just olya [345]
3 years ago
13

Help??

Mathematics
2 answers:
sleet_krkn [62]3 years ago
7 0
Its B i believe............................... <span />
julsineya [31]3 years ago
3 0
You would use the equation 

F+V=E+2
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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.

I hope this helped, if it did could you give me a good rating? lol

8 0
3 years ago
Every evening Jenna empties her pockets and puts her change in a jar. At the end of the week she counts her money. One week she
Sergeeva-Olga [200]
A) .10 d + .25 q = 7.75
B) d + q = 40

Multiplying B) by -.10
B)  -.10d -.10q = -4.0
Then adding this to A)
A) .10 d + .25 q = 7.75
.15q = 3.75

Quarters = 25
Therefore, dimes = 15
***************************************************
Double-Check
A) .10 d + .25 q = 7.75
A) .10 * 15 d + .25 * 25 = 7.75
A) 1.50 + 6.25 = 7.75

Correct!!


6 0
3 years ago
Graph the line x = -3
-BARSIC- [3]

Answer:

Draw a vertical line passing through (-3,0)

5 0
3 years ago
Assume that θ is a positive acute angle.<br><br> Given: sin θ =28/53<br> Find: sin2θ
antiseptic1488 [7]

Answer:

725 - 360 = 365

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Step-by-step explanation:

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3 years ago
What is the volume of a cube that has a side length of 5 centimeters? Recall the formula .  
mixas84 [53]
The answer would be 125
7 0
3 years ago
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