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s2008m [1.1K]
3 years ago
14

Question 7(Multiple Choice Worth 3 points)

Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
8 0

Hello,

The correct answer is 4... This is the correct exact answer

alexandr402 [8]3 years ago
3 0

Answer:

4

Step-by-step explanation:

<u>8</u><u>.</u><u>0</u>,8.1,8.2,8.3...........

8÷2=4

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75 POINTS Need an immediate answer please brainliest will be given! A train left a station travelling to a city at 30 mph. The t
yaroslaw [1]

The value of distance between the station and the city in terms of miles which train and car travelled at interval of 2 hours is 129.6 miles.

<h3>What is the rate of speed?</h3>

The rate of speed is the rate at which the total distance is travelled in the time taken. Rate of speed can be given as,

r=d/t

Here, (d) is the distance travelled by the object and (t) is time taken but the object to cover that distance.

The train traveled 1/3 of the distance at 30 mph and the remaining distance at 40 mph. Let <em>t</em> is the time the train has taken to travel and x is the distance it travelled. Thus,

t=\dfrac{\dfrac{1}{3}x}{30}+\dfrac{\dfrac{2}{3}x}{40}\\t=\dfrac{x}{90}+\dfrac{x}{60}\\t=\dfrac{2x+3x}{180}\\t=\dfrac{5x}{180}\\t=\dfrac{x}{36}

After two hour a car left the same station traveled the first 3 hours at 35 mph and the remaining distance at 51 mph. Let <em>t</em> is the time the car has taken to travel and x is the distance it travelled. Thus,

t+2=3+\dfrac{(x-3\times35)}{51}

As t is same, thus put the value of t in this equation,

\dfrac{x}{36}=3-2+\dfrac{(x-3\times35)}{51}\\\dfrac{x}{36}=3-2+\dfrac{(x-3\times35)}{51}\\\dfrac{x}{36}=1+\dfrac{(x-105)}{51}\\\dfrac{x}{36}=\dfrac{(51+x-105)}{51}\\51x=36x-54\times36\\51x-36x=1944\\x=\dfrac{1944}{15}\\x=129.6

Thus, the value of distance between the station and the city in terms of miles which train and car travelled at interval of 2 hours is 129.6 miles.

Learn more about the rate of speed here:

brainly.com/question/359790

#SPJ1

6 0
2 years ago
Ava is crafting dinosaurs for a diorama. She uses pound of clay to make
gregori [183]

Answer:

one pound per dinosaur

Step-by-step explanation:

3 0
3 years ago
A​ girls' softball team is raising money for uniforms and travel expenses. They are selling flats of bedding plants for ​$12.00
Anon25 [30]
300.
Steps:
27x100 = 2700
12x300=3600
3600+2700=6300
8 0
2 years ago
Given line BD is congruent to BC, find the measure of angle B
Degger [83]
If BD is congruent to BC, that means that the sides are equal, so their angles are too.
6x-9 = 3x+24
3x = 33
x = 33/3
x = 11
Angle BCD:
6×11-9 = 66-9 =57°
Angle BDC:
3×11+24 = 33+24 = 57°
Angle B:
x = 180° - 2×57°
x = 66°
5 0
3 years ago
7.5% sales tax on a $210 bracelet
kolbaska11 [484]
The total cost on the bracelet would be $225.75
4 0
3 years ago
Read 2 more answers
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