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trasher [3.6K]
2 years ago
14

Jenna read 25 pages of a book in 30 minutes at the same rate how many pages can she read in 3 hours

Mathematics
1 answer:
frozen [14]2 years ago
8 0
• Convert 3 hours into minutes: 3 x 60(minutes in an hour) = 180 minutes
• Divide to see how many times 30 minutes goes into 180: 180 ÷ 30 = 6
• Multiply: 25 x 6 = 150 

So, Jenna can read 150 pages of a book in 3 hours. Hope this helps! :D

~PutarPotato
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Are the ratios 1:2 and 7:20 equivalent?
stealth61 [152]

Answer:no

Step-by-step explanation:

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3 years ago
8) The height of a building h varies directly as the length and inversely as the width, if h = 25m when l = 10m and w = 5m, find
shtirl [24]

Let h,l, and w represent the height, length, and width of the building respectively

Then

\begin{gathered} h\text{ = }\frac{kl}{w} \\ \text{where k is the constant of proportionality} \end{gathered}\begin{gathered} \Rightarrow k=\frac{hw}{l} \\ \Rightarrow k=\frac{25\times5}{10}=12.5 \end{gathered}\Rightarrow h=\frac{12.5l}{w}

The new value of h = 50m, but l remains the same.

That is l = 10m

Therefore

\begin{gathered} \frac{50}{1}=\frac{12.5\times10}{w} \\ \Rightarrow\frac{50}{1}=\frac{125}{w} \\ \text{Cross multiplying, we have} \\ 50w\text{ = 125} \\ \Rightarrow\text{ w=}\frac{125}{50}=2.5 \end{gathered}

Hence, the width is 2.5m

8 0
11 months ago
I'm confused like in #1 the positive is five but what do I put for the negative
yuradex [85]

You found $5, so it's positive. You don't put anything in the negative, because you aren't losing anything.

4 0
3 years ago
Arthur drops a ball from a height of 81 feet above the ground. Its height, h, is given by the equation h = –16t2 + 81, where t i
Lorico [155]

Answer:

Step-by-step explanation:

We are given the position function and need to find the value of t when h<17.

Create an inequality that represents this situation:

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The simplest way to solve this is to subtract 81 from both sides:

-16t^2 then divide both sides by -16:

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6 0
3 years ago
Read 2 more answers
Find the slope of the graph of C
alexandr402 [8]

Step-by-step explanation:

the slope of a line or linear equation is always the factor of the driving variable.

usually in the form of

y = ax + b

x is the variable, and a the slope.

but in our case the variable is called "n".

it does not matter, the same principle applies.

the slope is the factor of n : 1050.

and as the slope is always the ratio y/x, we are looking for a fraction form, and that would be 1050/1.

so, the third answer is correct.

7 0
1 year ago
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