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zmey [24]
3 years ago
9

Marta walked at 3.9 miles per hour for 0.72 hours. How far did she walk

Mathematics
1 answer:
VLD [36.1K]3 years ago
5 0
She walked 2.808 miles.
0.72 seconds   ==>                   0.00078 miles
0.72 minutes    ==>                   0.0468 miles
0.72 hours       ==>                    2.808 miles
Hope that helped.
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3 years ago
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Find the X intercept and the Y intercept of the graph of the equation. 9/8x+8y=18
aleksandr82 [10.1K]

Answer:

\large\boxed{x-intercept=16\to(16,\ 0)}\\\boxed{y-intercept=\dfrac{9}{4}\to\left(0,\ \dfrac{9}{4}\right)}

Step-by-step explanation:

\dfrac{9}{8}x+8y=18\\\\x-intercept\ \text{is for}\ y=0:\\\\\dfrac{9}{8}x+8(0)=18\\\\\dfrac{9}{8}x+0=18\\\\\dfrac{9}{8}x=18\qquad\text{multiply both sides by}\ \dfrac{8}{9}\\\\\dfrac{8\!\!\!\!\diagup^1}{9\!\!\!\!\diagup_1}\cdot\dfrac{9\!\!\!\!\diagup^1}{8\!\!\!\!\diagup_1}x=\dfrac{8}{9\!\!\!\!\diagup_1}\cdot18\!\!\!\!\!\diagup^2\\\\x=16\\\\y-intercept\ \text{is for}\ x=0:\\\\\dfrac{9}{8}(0)+8y=18\\\\0+8y=18\\\\8y=18\qquad\text{divide both sides by 8}\\\\y=\dfrac{18}{8}\\\\y=\dfrac{9}{4}

8 0
3 years ago
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Can you please help me?!
iren2701 [21]

Answer:

43.5 miles per hour

Step-by-step explanation:

Divide 174 miles by 4 hours. Hope this helped :)

7 0
3 years ago
(a) How would you characterize the relationship between the hours spent on homework and the test scores? Explain.
cricket20 [7]
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b) y=8x+40 so at x=3h, y=test score= 8*3+40 = 64

c) 40 represents test score when u spend 0 hour on hw


5 0
3 years ago
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complete the solution of the equation. Find the value of y when x equals 9. 3x + 4y = 43 Enter the correct answer. ​
3241004551 [841]
3(9)+4y=43
27+4y=43
4y=16
Y=4
4 0
3 years ago
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