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sasho [114]
3 years ago
14

A worm walks 40cm in 8 minutes. Give both unit rates. Make sure you include the unit for each. (Total 8 points: 2 points for eac

h unit rate, 1 point for each of the units labeled and 1 point for each work shown or explanation)
Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0
40/8 = 5 cm per minute
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I understood the whole problem but why they add 5 under square root?<br>please help me
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Or, it may be a power..

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Which of these is an example of driving at an average rate of 20 miles per hour?
dlinn [17]
Driving 40 miles in 2 hours is the answer
4 0
3 years ago
Math help please i will mark brainliest
brilliants [131]

Answer:

b and c

Step-by-step explanation:

4 0
3 years ago
Mehvish buys 1/2 kg carrots, 3 kg potatoes, 2 kg onions and 1 1/2kg of chicken.
ozzi

Answer:

The amount of change will be £7.99

Step-by-step explanation:

Here, we want to calculate the amount of change that Mehvish should get

1/2 kg carrots at 50 p per kg will be;

1/2 * 50 = 25 p

3 kg potatoes at 64 p per kg will be

3 * 64 = p 192

2 kg onions at 42 p per kg

2 * 42 p = 84 p

1 1/2 kg chicken at £6 per kg will be:

since £1 is 100 p

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since £1 is 100 p

£20 will be;

20 * 100 = 2,000 p

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In pounds, this is divided by 100

we have this as 799/100 = £7.99

7 0
3 years ago
between 1995 and 2006, the population of samburg, usa(in thousands) can be modeled by f(x) = 0.35x(squared) - 2.1x+15.8 where x=
Juli2301 [7.4K]
\bf f(x)=0.35x^2-2.1x+15.8\qquad &#10;\begin{cases}&#10;x=\textit{year since 1995}\\&#10;f(x)=\textit{population amount}&#10;\end{cases}

the equation is a quadratic one, and it has a positive coefficient on the leading term, meaning, is opening upwards, so it has a "burrow" for the vertex.

the minimum or lowest point for a quadratic opening upwards is, well, the vertex point :),   the "x" value is the year, the "y" or f(x) value is the population, we're asked for the year, or the x-coordinate of the vertex

well   \bf \begin{array}{llll}&#10;f(x)=&0.35x^2&-2.1x&+15.8\\&#10;&\quad \uparrow &\quad \uparrow&\uparrow \\&#10;&\quad  a&\quad  b &c&#10;\end{array}&#10;\\\\&#10;&#10;\\\\&#10;\qquad  \textit{vertex of a parabola}\\ \quad \\&#10;\qquad &#10;&#10;\left(\boxed{-\cfrac{{{ b}}}{2{{ a}}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
5 0
4 years ago
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