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Orlov [11]
1 year ago
13

10POINTS !!

Mathematics
2 answers:
emmasim [6.3K]1 year ago
3 0

Step-by-step explanation:

<h3> length </h3>

a + b = 18cm

a = 18 - b

<h3> Area </h3>

a² + b² = 212cm²

(18-b)² + b² = 212

324 - 36b + b² + b² = 212

2b² - 36b + 112 = 0

b² - 18b + 56 = 0

b² - 4b - 14b + 56 = 0

b(b-4) -14(b - 4) = 0

(b-4) (b-14) = 0

b-4 = 0 OR. b-14 = 0

b = 4 cm b = 14 cm

so 4cm < 14cm

so , length of a side of the smaller square is 4cm .......

And , large square's = 14cm .....

Dennis_Churaev [7]1 year ago
3 0

Answer:

square one sides = 14, 14

square 2 sides = 4, 4

14 + 4 = 18

14 x 14 + 4 x 4 = 212

Step-by-step explanation:

14 x 14 + 4 x 4

this is the area of the 2 being added

the sides lengths are 14 and 4

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What is the solution to the system of equations below?
AnnyKZ [126]

Answer:

x=9, y=3

Step-by-step explanation:

-4x+6y=-18

y=-2x+21

-4x+6(-2x+21)=-18

-4x-12x+126=-18

144=16x

x=9

y=-2x+21

y=-18+21

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8 0
3 years ago
Divide 3500 in the ratio 2: 2 : 3
BlackZzzverrR [31]

Answer:

1000 : 1000 : 1500

Step-by-step explanation:

2 + 2 + 3 = 7

3500 ÷ 7 = 500

2 × 500 = 1000

2 × 500 = 1000

3 × 500 = 1500

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5 0
2 years ago
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The current in a simple electric circuit varies inversely as the resistance. If the current is 20amps when the resistance is 5 o
IrinaVladis [17]

Answer:

0.5amps

Step-by-step explanation:

I is inversely proportional to resistance

I = k/R

k = I/ R

k = 20/5

k = 4

This means that, I = 4/R

So, when R = 8ohms,

I = 4/8

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3 0
3 years ago
A pizza dough recipe calls for 6 1/2 cups of flour. The recipe makes 37 1/2 ounces of dough. How many ounces of dough does 1 cup
NemiM [27]

Answer:

n = 5\frac{10}{13}

Step-by-step explanation:

Given

Call = 6\frac{1}{2} cups

Recipe = 37\frac{1}{2} ounce

Required

Number of ounces per cup (n)

To do this, we simply divide the Recipe by the call

So, we have:

n = \frac{Recipe}{Call}

n = 37\frac{1}{2} \div 6\frac{1}{2}

Express as improper fraction

n = \frac{75}{2} \div \frac{13}{2}

Rewrite as:

n = \frac{75}{2} * \frac{2}{13}

n = \frac{75}{13}

n = 5\frac{10}{13}

3 0
2 years ago
Perform the indicated operation. 4/11 * 10/8
Sliva [168]
So basically what you wanna do is multiply across giving you 40/88 which you can simplify down to 5/11 
Hope this helps :D
4 0
3 years ago
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