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3 years ago

9

5% of 8.72. 0.0436 0.436 4.36

1 answer:

faust18 [17]3 years ago

7 0

You can set up an inequality with each of these. is/of = %/100
In this case you'd be solving for each of the "is".

(1) X/8.72=5/100
100X = 43.6
X= .436

(2) X/0.0436=5/100
100X=0.218
X= 0.00218

(3) X/0.436=5/100
100X=2.18
X=0.0218

(4) X/4.36=5/100
100X=21.8
X=0.218

I've heard of the method referred to as the Heart Method. Try looking up YouTube videos on how to solve these types of problems.

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Assign two variables for each problem, and write the equations. Do not solve.

Xelga [282]

Call the number of trumpet players "T" and the number of horn players "H".

We can use the given information to set up equations:

1."<span>the number of trumpet players is 4 times the number of French horn players"
$T=4H$

2. "</span><span>There are 35 trumpet and French horn players in the band."
$T+H=35$

If you were asked to solve you could now do it by substitution:
$4H+H=35$
$5H=35$
$H=7$
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3 years ago

How do you graph y=-3x-5 y=x+9

irga5000 [103]

I used Desmos to graph it but here are the coordinates used to graph it in the pictures below.

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3 years ago

Andrew has three times as many pencils as Noah and five pens he has 17 pens and pencils altogether how many pencils does Noah ha

Novay_Z [31]

9514 1404 393

Answer:

4

Step-by-step explanation:

The distributive property does not appear to be involved in this question.

Let n represent the number of Noah's pencils. Then Andrew's total is ...

3n +5 = 17

3n = 12 . . . . . subtract 5 from both sides

n = 4 . . . . . . divide both sides by 3

Noah has 4 pencils.

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2 years ago

antiseptic1488 [7]

Answer:

$-3x^{4} + 3{x}^{3} + 8{x}^{2}- 2x - 5$

Step-by-step explanation:

To avoid confusion, distribute the negative amongst all terms in the second set of parentheses.

I hope this helps you out alot, and as always, I am joyous to assist anyone at any time.

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2 years ago

Read 2 more answers

There are 20 mice in a 5 m2 field ecosystem. The population density of mice is _____.

Alex17521 [72]

The formula for density = number/ area
In this case number=20
area = 5m^2

Density = 20/5=4 mice per m^2
The right answer is <span>A. 4 per m2</span>

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2 years ago