All categories

3 years ago

-3a + b when a = -4 and b = 9.

Mathematics

2 answers:

harkovskaia [24]3 years ago

5 0

The same as the other answer lol

Archy [21]3 years ago

3 0

Answer:

12+9=21

Step-by-step explanation:

You might be interested in

Using the standard 28/36 guidelines, what is the maximum mortgage payment allowed for someone with an annual salary of $82,175?

stich3 [128]

Answer: 28/36 Rule calculator tells you whether your debt is too high for your income.

Step-by-step explanation:

4 0

2 years ago

PLZ HELP ASAP image above ❤️

DaniilM [7]

Answer:

A = 25pi

Step-by-step explanation:

The area of the circle is given by

A = pi r^2

The radius is 5

A = pi 5^2

A = 25pi

3 0

4 years ago

Read 2 more answers

Use algebra to solve 3x+4 = 1/x The exact solutions are x= Х

skad [1K]

Answer:

Ignore the A before the ±, it wouldn't let me type it correctly.

$x=\frac{2±\sqrt{7} }{3}$

Step-by-step explanation:

3x + 4 = 1 ÷ x

3x + 4 - 4 = 1 ÷ x - 4

3x = 1 ÷ x - 4

$3x=\frac{1}{x} +\frac{x(-4)}{x}$

$3x=\frac{1+x(-4)}{x}$

$3x=\frac{1-4x}{x}$

$x(3x)=x(\frac{1-4x}{x})$

x · 3x = - 4x + 1

3x² = - 4x + 1

3x² - (- 4x + 1) = 0

3x² + 4x - 1 = 0

Ignore the A before the ±, it wouldn't let me type it correctly.

$x=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

a = 3

b = 4

c = - 1

$x=\frac{-4±\sqrt{4^{2}-4((3)(-1)) } }{2(3)}$

$x=\frac{-4±\sqrt{16-4((3)(-1)) } }{2(3)}$

$x=\frac{-4±\sqrt{16+12 } }{2(3)}$

$x=\frac{-4±\sqrt{28 } }{2(3)}$

$x=\frac{-4±\sqrt{(2)(14) } }{2(3)}$

$x=\frac{-4±\sqrt{(2)(2)(7) } }{2(3)}$

$x=\frac{-4±\sqrt{2 } \sqrt{2}\sqrt{7} }{2(3)}$

$x=\frac{-4±2\sqrt{7} }{2(3)}$

$x=\frac{-4±2\sqrt{7} }{6}$

Two separate equations

$x=\frac{-4+2\sqrt{7} }{6}$

$x=\frac{2+\sqrt{7} }{3}$

$x=\frac{-4-2\sqrt{7} }{6}$

$x=\frac{2-\sqrt{7} }{3}$

7 0

3 years ago

PLEASE PLEASE PLEASE HELP!

Virty [35]

I think the answer may be 2.1 I'm not 100 percent sure

5 0

4 years ago

Read 2 more answers

6492x82 You also have to borrow Plz help

ELEN [110]

532,344
Hope that is what you were looking for.

7 0

4 years ago

Read 2 more answers