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Korolek [52]
3 years ago
11

What is QR to the nearest tenth

Mathematics
1 answer:
neonofarm [45]3 years ago
5 0
The answer is 36.0 because
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A runner completes a 400-m race in 43.9 s. In a 100-m race, he finishes in 10.4 s. In which race was his speed faster?
Sveta_85 [38]

Answer:

100m race

Step-by-step explanation:

because 10.4 x 4 because 100m and 400m right 10.4x4=41.6 and 43.9 so obviously the 100m race is faster.

5 0
3 years ago
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The velocity of a car over five hours is given by v(t)=60ln(t+1),0≤t≤5 in kilometers per hour. What is the total distance travel
algol [13]

Step-by-step explanation:

as the velocity is not constant over time, we actually have to integrate v(t) over the interval 0<=t<=5 to get the distance.

v(t) = 60×ln(t + 1)

V(t) = 60 × integral(ln(t + 1)) between 0 and 5.

integral(ln(t + 1)) = (t + 1)ln(t + 1) - t + C

V(t) = 60 × ((t + 1)ln(t + 1) - t + C)

the distance traveled between t = 0 and t = 5 is then

60 × ((5 + 1)ln(5 + 1) - 5 + C) - 60 × ((0 + 1)ln(0 + 1) - 0 + C) =

= 60×(6ln(6) - 5 + C) - 60×(1ln(1) + C) =

= 60×(5.750556815... + C) - 60×C =

= 60×5.750556815... = 345.0334089... ≈ 345 km

7 0
2 years ago
Autumn cut out a triangular piece of fabric to sew on her comforter. The area of the triangle is 48 square inches, and the heigh
Step2247 [10]
A=\dfrac{1}{2}ah\\&#10;2A=ah\\&#10;a=\dfrac{2A}{h}\\\\&#10;a=\dfrac{2\cdot48}{12}\\&#10;a=4 \Rightarrow D
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I need to know how to solve in order to find the equation parallel to the one given.
vampirchik [111]
The answer is A.
If you are asked to find an equation parallel to the other, make sure the equations have the SAME SLOPE, DIFFERENT Y-INTERCEPT
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3 years ago
Which point is a solution to the system of equations below?
jenyasd209 [6]
The answer is C

if you put x and y in each equation it becomes true
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2 years ago
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