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nydimaria [60]
3 years ago
10

Marie is reading a 271-page book. She has already read 119 pages. She uses the equation 119+8h=271 to find out how long it will

take her to finish the book if she reads at about 8 pages per hour.
Solve for h.
Mathematics
2 answers:
VikaD [51]3 years ago
5 0

Answer:

12.3

Step-by-step explanation:

271-119= 152

get square root of 152

12.3x12.3=152

satela [25.4K]3 years ago
4 0

Answer:

19 hours

Step-by-step explanation:

119 + 8h = 271

8h = 271 - 119

8h = 152

8h/8 = 152/8

h = 19

Hope This Helps! •v•

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PolarNik [594]
50 km/h = 4 hours
60 km/h = x hours

50x = 60×4

50x = 240

x = 4.8 hours
6 0
3 years ago
Read 2 more answers
Solve (-5/2)x ‐ 5 = -55
Dmitry_Shevchenko [17]

Answer: 5

Step-by-step explanation: add 5 on each side and you get -50 then divide -5/2 with -50 and get 5

5 0
3 years ago
Find the unit vector in the direction of u = (-3,2).
DENIUS [597]
\bf \textit{unit vector for }(a,b)\implies \left( \cfrac{a}{\sqrt{a^2+b^2}}~~,~~\cfrac{b}{\sqrt{a^2+b^2}} \right)\\\\
-------------------------------\\\\
(-3,2)\qquad \stackrel{unit~vector}{\implies }\qquad \left( \cfrac{-3}{\sqrt{(-3)^2+2^2}}~~,~~\cfrac{2}{\sqrt{(-3)^2+2^2}} \right)
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\left( -\cfrac{3}{\sqrt{13}}~~,~~ \cfrac{2}{\sqrt{13}}\right)\\\\
-------------------------------

\bf \textit{and now let's \underline{rationalize} the denominator for each}
\\\\\\
-\cfrac{3}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies -\cfrac{3\sqrt{13}}{13} \qquad \qquad \qquad \qquad  \cfrac{2}{\sqrt{13}}\cdot \cfrac{\sqrt{13}}{\sqrt{13}}\implies \cfrac{2\sqrt{13}}{13}
\\\\\\
\textit{and written in \underline{ai+bj form}}\qquad -\cfrac{3\sqrt{13}}{13}i~~~~+~~~~\cfrac{2\sqrt{13}}{13}j
7 0
3 years ago
Which best describes the angles of some rhombuses?
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<span>A.Two acute angles and two obtuse angles

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5 0
3 years ago
Diane has the following data:
Vladimir [108]
To determine the median, we need to set up our numbers from least to greatest, and then place T in later to figure out what T is.
8, 9, 9, 9, 10, 11, 12, 15. Cross out the smallest number with the largest number.
9, 9, 9, 10, 11, 12.
9, 9, 10, 11.
9, 10.
9.5 is our median currently.
Since we need to get a number after 10 to make 10 the median, let's use 12.
8, 9, 9, 9, 10, 11, 12, 12, 15.
9, 9, 9, 10, 11, 12 ,12.
9, 9, 10, 11, 12.
9, 10, 11.
10 is now our median since we inserted 12 into our list.
Your answer is 12.
I hope this helps!
3 0
3 years ago
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