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2 years ago

If 5 bags weigh the same as 3 blocks, how many blocks will 9 bags weigh?

Mathematics

2 answers:

crimeas [40]2 years ago

8 0

Answer: C. 5.4 Blocks

Step-by-step explanation:

Given information

5 bags = 3 blocks

Set variable

Let x be the number of blocks

Constructure proportional equation

$\frac{3}{5} } ~=~\frac{x}{9}$

Cross multiply the fraction

$(3)~*~(9)~=~(5)~*~(x)$

$27~=~5x$

Divide 5 on both sides

$27~/~5~=~5x~/~5$

$\Large\boxed{x=5.4~blocks}$

Hope this helps!! :)

Please let me know if you have any questions

alexandr402 [8]2 years ago

3 0

Answer:

Step-by-step explanation:

5 times .6 equals 3

9 times .6 equals 5.4

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MakcuM [25]

when x =1 , y = 3

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3-1 = 2

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3 years ago

Write m=-3 and (3,-1) in point slope form

Art [367]

Answer:

(y+1)= -3(x-3)

Step-by-step explanation:

Use Point-Slope Formula

$(y-y_{1} )=m(x-x_{1} )$

Substitute

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3 years ago

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lina2011 [118]

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2 years ago

Read 2 more answers

Sally walked 3/4 of a mile before lunch and 1/2 of a mile after lunch. How far did she walk in all?

Wittaler [7]

Answer:

1 1/4

Step-by-step explanation:

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2 years ago

This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive an

Lapatulllka [165]

Answer:

Step-by-step explanation:

Given that there is a function of x,

$f(x) = 2sin x + 2cos x,0\leq x\leq 2\pi$

Let us find first and second derivative for f(x)

$f'(x) = 2cosx -2sinx\\f"(x) = -2sinx-2cosx$

When f'(x) =0 we have tanx = 1 and hence

a) f'(x) >0 for I and III quadrant

Hence increasing in $(0, \pi/2) U(\pi,3\pi/2)\\$

and decreasing in $(\pi/2, \pi)U(3\pi/2,2\pi)$

$x=\frac{\pi}{4}, \frac{3\pi}{4}$

$f"(\pi/4)$

Hence f has a maxima at x = pi/4 and minima at x = 3pi/4

b) Maximum value = $2sin \pi/4+2cos \pi/4 =2\sqrt{2}$

Minimum value = $2sin 3\pi/4+2cos 3\pi/4 =-2\sqrt{2}$

f"(x) =0 gives tanx =-1

$x= 3\pi/4, 7\pi/4$

are points of inflection.

concave up in (3pi/4,7pi/4)

and concave down in (0,3pi/4)U(7pi/4,2pi)

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3 years ago