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3 years ago

Factor this expression using the GCF and then explain how you can verify your answer.

Mathematics

2 answers:

gayaneshka [121]3 years ago

7 0

Collect like terms: (20+16)a
Calculate : 20+16= 36, then bring down your “A” and that’s gives you 36a !

ohaa [14]3 years ago

6 0

Answer:

Step-by-step explanation:

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3. Which number is a solution of the inequality? (1 point) 8 2 8 -1 0

worty [1.4K]

I think it’s 8 can you answer my question

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3 years ago

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

$y=x+2$

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

$y=3\sqrt{5}$

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4 years ago

9000 dollars is placed in an account with an annual interest rate of 7.75%. How much will be in the account after 18 years, to t

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In one year, $ 9,000 with a profit of 7.75%, is $ 697.5

697.5 × 18 = 12555

After 18 years old, it is $ 15,222

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3 years ago

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babymother [125]

Answer is d. $12+20d

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4 years ago

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What is the inverse of the function g(x)=-3(x + 6)? Please help me ASAP

Karo-lina-s [1.5K]

Answer:

Inverse g(x) = -x/3-6

Step-by-step explanation:

To understand this just think g(x) as y so

we got y= -3(x+6) after that we change the minus three to left

so we got -y/3 because -3 is multiply. After that plus 6 came and become minus 6.

After all,you have to replace x in y place.

y = -3(x +6)

-y/3 = x +6

-y/3 -6 = x

-x/3 -6 = g(x)

8 0

2 years ago