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Musya8 [376]
3 years ago
5

Johnny played 31/2 video games in an hour.How many could be play in 40 minutes ?

Mathematics
1 answer:
REY [17]3 years ago
5 0

<u>Answer: </u>

Johnny could play 2\frac{1}{3} video games in 40 minutes.

<u>Explanation:</u>

Given:  

Johnny played  video games in an hour = 3\frac{1}{2}

To  Find:

Video games Jonny can play in 40 minutes =?

Solution:

number of videos games Jonny  can play in 1 hour = 3 \frac{1}{2}= \frac{7}{2}

And as 1 hour = 60 minutes ,  

So number of videos games Jonny can play in 60 minutes =\frac{7}{2}

=> Videos games Jonny can play in 1 minute ={\frac{\frac{7}{2}}{60}

=>\frac{7}{20\times 6}

=> \frac{7}{120}

=> Videos games Jonny can play in 40 minute = 40 x Videos games Jonny can play in 1 minute

=> Videos games Jonny can play in 40 minute = 40 \times \frac{7}{120}

=> \frac{7}{3}=2\frac{1}{3}

Hence Johnny could play 2\frac{1}{3} video games in 40 minutes.

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ch4aika [34]
Lin : 1.5 km in 5 minutes = 1.5 / 5 = 0.3 km per minute
Andre : 2 km in 8 minutes = 2 / 8 = 0.25 km per minute

so Lin is biking faster
4 0
3 years ago
Read 2 more answers
Given the functions, fx) = x - 8 and g(x) = x2 + x - 1, perform the indicated operation. When applicable, state the domain
adell [148]

Answer:

A

Step-by-step explanation:

(fg)(x) = f(x) × g(x)

= (x - 8)(x² + x - 1)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x² + x - 1) - 8(x² + x - 1) ← distribute both parenthesis

= x³ + x² - x - 8x² - 8x + 8 ← collect like terms

= x³ - 7x² - 9x + 8 → A

There are no restrictions on the domain.

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=f%28x%29%3D16t%5E2%2B32t" id="TexFormula1" title="f(x)=16t^2+32t" alt="f(x)=16t^2+32t" align="
Nataly_w [17]

Answer:

- time = 1second

- maximum height = 16m

Step-by-step explanation:

Given the height of a pumpkin t seconds after it is launched from a catapult modelled by the equation

f(t)=-16t²+32t... (1)

The pumpkin reaches its maximum height when the velocity is zero.

Velocity = {d(f(x)}/dt = -32t+32

Since v = 0m/s (at maximum height)

-32t+32 = 0

-32t = -32

t = -32/-32

t = 1sec

The pumpkin reaches its maximum height after 1second.

Maximum height of the pumpkin is gotten by substituting t = 1sec into equation (1)

f(1) = -16(1)²+32(1)

f(1) = -16+32

f(1) = 16m

The maximum height of the pumpkin is 16m

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3 years ago
Need help ASAP please I’ll give brainiest:)
scoundrel [369]

Answer:

ac+ad+bc+bd

Step-by-step explanation:

PLS mark me brainiest

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3 years ago
The difference between the acute angles of a right angled triangle is 72degree find them .
MaRussiya [10]

The 2 angles add up to 90 degrees so

x + y = 90, also:-

x - y = 72 (given)

adding the 2 equations:-

2x = 162

x = 81

and therefore

y + 81 = 90

y = 9


Answer the 2 angles are 81 and 9 degrees

5 0
3 years ago
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