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JulsSmile [24]
3 years ago
6

Can someone help me with my homework I don’t understand it

Mathematics
1 answer:
trapecia [35]3 years ago
6 0

Answer:

1 : 14

hard to see image (try using screen shots)

but.... 2 inches to 4 feet would be

2 : 48 which is

1 : 14

Step-by-step explanation:

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Wanni cycled 6 km from her house to the school at a uniform speed, v km/h. If she increased her speed
Karolina [17]

Answer:

The quadratic equation in terms of v is   v² + 2 v + 180 = 0

Step-by-step explanation:

Given as :

The distance between house to the school = d = 6 km

The uniform speed = v km/h

So, Time = \dfrac{\textrm Distance}{\textrm speed}

or, t = \dfrac{\textrm d}{\textrm v}

Or, t = \dfrac{\textrm 6}{\textrm v}

<u>Now, Again</u>

The speed is increase by 2 km/h

i.e speed = (v + 2) km/h

So, Time taken = t' = (t - \dfrac{4}{60})hours

i.e t' =  (t - \dfrac{1}{15})hours

Now, Time = \dfrac{\textrm Distance}{\textrm speed}

So, (t - \dfrac{1}{15}) = \dfrac{\textrm d}{\textrm v}

Or,  (t - \dfrac{1}{15}) = \dfrac{\textrm 6}{\textrm (v + 2)}

Or , \dfrac{\textrm 6}{\textrm v} -  \dfrac{1}{15} = \dfrac{\textrm 6}{\textrm (v + 2)}

Or , \dfrac{\textrm 90 - v}{\textrm 15 v} = \dfrac{\textrm 6}{\textrm v + 2}

Or, (90 - v) × (v + 2) = 6 × 15 v

Or, 90 v - 180 - v² - 2 v = 90 v

Or,  v² + 2 v + 180 = 90 v - 90 v

Or,  v² + 2 v + 180 = 0

So, The quadratic equation in terms of v

v² + 2 v + 180 = 0

Hence The quadratic equation in terms of v is   v² + 2 v + 180 = 0   Answer

3 0
3 years ago
How do i solve this
stiks02 [169]
The formula for volume of a cylinder is 3.14r^2h.
r = 3
h = 6

3.14 x 3^2 x 6
3.14 x 9 x 6
=169.56

Let me know if you have any other questions

4 0
3 years ago
Read 2 more answers
Solve this problem using 3.14 for pi. The diameter of this Frisbee is 12 inches. What’s the circumference of this Frisbee?
Ludmilka [50]
Circumference= diameter x pi
12x3.14 = 37.68
8 0
3 years ago
How do i show my work for 40 divided by 17.00
asambeis [7]

Answer:2.35294117647 or 2.3

Just do 40/17

8 0
3 years ago
Can someone help me with this question?<br><br><br> (please explain?
Bogdan [553]
The most accurate way would be the fourth answer, because to estimate 66% of 47 you need to round both as closely as possible. 66% rounds closest to 2/3, and 47 is closest to 48
4 0
3 years ago
Read 2 more answers
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