3 years ago

Two less than thre times a number is nine in corresponding equation

Mathematics

1 answer:

AveGali [126]3 years ago

3 0

The answer is and the number is...

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For the numbers 2 through 9 on a telephone keypad, draw two mapping diagrams: one mapping numbers

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2 years ago

What is the answer to 4(x + 1) = -6

snow_tiger [21]

Answer:

-5/2

Step-by-step explanation:

With Distributive property, we get 4x + 4 = -6. Subtract 4 from both sides and we get 4x = -10. Divide both sides by 4 and we get x = -5/2.

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2 years ago

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Can someone help me out with this my grade are bad

Pavlova-9 [17]

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6.24 is the answer rounded to the nearest hundreth

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2 years ago

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

azamat

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

Find the value of x

$x=y+5 ----> x=2+5=7\ cm$

Find the perimeter of rectangle

$P=2(x+y)=2(7+2)=18\ cm$

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2 years ago

BRAINLIEST

IRINA_888 [86]

Answer:

that would be b

Step-by-step explanation:

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3 years ago