3 years ago

28 squared minus 39x minus 80 equals 0

Mathematics

1 answer:

Rudik [331]3 years ago

3 0

Answer:

x = 704/39 ( <----Fraction)

Step-by-step explanation:

28 squared minus 39x minus 80 equals 0

784-39x-80=0 evaluate the power

704-39x=0 Subtract the numbers

-39x=-704 move the constant to the right hand side and change it's sign

Divide on both side to get x = 704/39

You might be interested in

Can someone explain how to find the IQR for box plots?

never [62]

Go on the top right corner w the 3 dots

7 0

3 years ago

Read 2 more answers

Dividing by 28 is the inverse of?

Fantom [35]

How do you reverse division? You multiply. So, the answer is multiplying by 28.

6 0

3 years ago

What’s the slope of (5,9) and (8,4)

Allushta [10]

Answer: -5/3

Step-by-step explanation:

Use the slope formula: $\frac{y_{2}-y_1 }{x_2-x_1}$

You substitute the numbers in and subtract to get -5/3.

4 0

3 years ago

Read 2 more answers

Find the slope of the line through the pair of points.

erastovalidia [21]

Answer:

The answer is A undefined

Step-by-step explanation:

The slope is given by

$m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

$m=\frac{9-(-13)}{17-17}=\frac{22}{0}$

which is undefined (division by zero)

4 0

3 years ago

I'm not sure if this is right or not could someone also explain why ?

nikitadnepr [17]

The mapping rule for 90 degrees counterclockwise would be (-y,x). So if you had (x,y) it would transfer to (-y,x). Yours is wrong it should be (4,-3). Remember
-(-4) is 4 and -3 stays as -3.

Basically, memorize these mapping rules.

Hope this helped!

6 0

3 years ago

28 squared minus 39x minus 80 equals 0​

28 squared minus 39x minus 80 equals 0