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svlad2 [7]
3 years ago
5

Gerri says that if a number is a multiple of 9 it is also a multiple of 3. Do you agree ? Explain

Mathematics
1 answer:
kotykmax [81]3 years ago
7 0

Answer:

That friend is s2pid.

Step-by-step explanation:

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The cost $C$ (in dollars) of making a square window with a side length of $n$ inches is represented by $C=\frac{n^2}{5}+175$
Trava [24]

The side length (in feet) of the square window which has the cost of making equal to $355 is 30 feet.

<h3>What is a mathematical model?</h3>

A mathematical model is the model which is used to explain the any system, the effect of the components by study and estimate the functions of systems.

The cost (in dollars) of making a square window with a side length is C. the length of side of the window is n.

The model, which represent the cost of window in dollar, is,

C=(n²/5)+175

A window costs $355. Thus, C=355. Put this value in above model as,

355=(n²/5)+175

355-175=(n²/5)

180 x 5=n²

n=√(900)

n=30

Hence, the side length (in feet) of the square window which has the cost of making equal to $355 is 30 feet.

Learn more about the mathematical model here;

brainly.com/question/4960142

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5 0
2 years ago
a store buys CDs with $1 for each and sells them for 1.5 each how many CDs should they sell to earn $100
abruzzese [7]
67 CDS

100/1.5=^
Hope this helps!
6 0
3 years ago
Read 2 more answers
What is the sum of the counting numbers 1 - 40
AVprozaik [17]
Simply it as follows:

1 + 39 = 40
2 + 38 = 40 etc

18 + 22 = 40
19 + 21 = 40

There are 19 of these plus 40 itself . . .therefore 20 of them

20 x 40 = 800

And finally the last number not used, 20

Therefore 800 + 20 = 820
5 0
3 years ago
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Leia cuts congruent triangular patches with an area of 45 square centimeters from a rectangular piece of fabric that is 18 centi
zimovet [89]
The number of patches that Leia can cut from 32 pieces of the fabric measuring  18 cm by 10 cm will be as follows:
Number of pieces=[total area of fabric]/[area of patch]
area of fabric=18×10=180 cm²
Area of 32 patches=180×32=5760 cm²

Area of patch=45 cm²

Number of patches=5760/45=128 patches 
6 0
3 years ago
Solve for x 3x + 2 y;y=
Nataly [62]

Answer:

I beleive its 6

Step-by-step explanation:

5 0
3 years ago
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