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2 years ago

What is the answer to 8y-8=37-7y

Mathematics

1 answer:

Brut [27]2 years ago

8 0

Y = 3

Just simplify the both sides, then add 7y to both then add 8 to both sides and divide both sides by 15

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A positive real number is 2 less than another. When 4 times the larger is added to the square of the smaller, the result is 49.

Kobotan [32]

Answer:

The numbers are

$-2+3\sqrt{5}$ and $3\sqrt{5}$

Step-by-step explanation:

Let

x -----> the smaller positive real number

y -----> the larger positive real number

we know that

A positive real number is 2 less than another

$x=y-2$

$y=x+2$ ----> equation A

When 4 times the larger is added to the square of the smaller, the result is 49

$4y+x^2=49$ ----> equation B

substitute equation A in equation B

$4(x+2)+x^2=49$

solve for x

$x^2+4x-41=0$

The formula to solve a quadratic equation of the form

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

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+4x-41=0$

$a=1\\b=4\\c=-41$

substitute in the formula

$x=\frac{-4\pm\sqrt{4^{2}-4(1)(-41)}} {2(1)}$

$x=\frac{-4\pm\sqrt{180}} {2}$

$x=\frac{-4\pm6\sqrt{5}} {2}$

$x=-2\pm3\sqrt{5}$

The positive real number is

$x=-2+3\sqrt{5}$

Find the value of y

$y=x+2$

$y=-2+3\sqrt{5}+2$

$y=3\sqrt{5}$

6 0

3 years ago

What is 48+60 using distributive property

Sedaia [141]

108 you don't need the distributive property.

3 0

2 years ago

Read 2 more answers

Solve by graphing:<br> x^2-6x+9=0

irinina [24]

Hello :
the solution :x²-6x+9=0 is the x- intresept and graph of f(x) =x²-6x+9
the solution is : x=3

6 0

2 years ago

Ignore the bottom part and the top just show the steps and solve where it says solveplz

notka56 [123]

1/4 # hamburger = 16 oz to a pound so 1/4 is 4 oz.

1 doz baseballs (12), 5 oz each

Box = 9 oz.

Total weight = 12x5 = 60 oz. + 9 oz. = 69 oz.

69/16 = 4 lb. 5 oz.

5 0

2 years ago

Help pls quick!PLS AND TY

JulsSmile [24]

Answer: 12 Fruit Snacks

Hope this Helps!

6 0

1 year ago