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2 years ago

Find the area of the shap

Mathematics

2 answers:

UkoKoshka [18]2 years ago

3 0

25 x 15= 375 is ypur answer

patriot [66]2 years ago

3 0

You have to break up the shape into different pieces in order to find the area.
(25•10)+(5•8/2)+(5•5/2)+(12•5)=342.5

The area is 342.5 ft^2

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Marco is 8 years younger than his brother Paolo. If their product of their ages is 105, how old is Marco? plz help

Nina [5.8K]

Answer:

Marco's age is 7 years old

Step-by-step explanation:

Let

x ----> Marco's age

y ----> Paolo's age

we know that

$x=y-8$ ----> $y=x+8$ ----> equation A

$xy=105$ ----> equation B

substitute equation A in equation B

$x(x+8)=105$

$x^2+8x-105=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+8x-105=0$

$a=1\\b=8\\c=-105$

substitute in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(-105)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{484}} {2}$

$x=\frac{-8(+/-)22} {2}$

$x=\frac{-8(+)22} {2}=7$

$x=\frac{-8(-)22} {2}=-15$

Remember that the solution cannot be a negative number

The solution is x=7

therefore

Marco's age is 7 years old

4 0

3 years ago

What is 21 1/2‐6 1/2

snow_tiger [21]

Answer

Step-by-step explanation:

Please mark brainliest.

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2 years ago

What is the y intercept for y = -4x + 19 y = 2x + 1

max2010maxim [7]

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2 years ago

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irakobra [83]

Answer:

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Step-by-step explanation:

70 + 32 = 102

102 + 36 = 138

138 + 40 = 178

178 + 44 = 222

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3 years ago

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oee [108]

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