3 years ago

Evaluate 2b^2 − 4a + 4a^2 for a = 3 and b = −8.

Mathematics

1 answer:

kipiarov [429]3 years ago

6 0

(2*(-8)^2)-(4*3)+(4*3^2)

128-12+36

152

You might be interested in

One evening, Mr. Smith, Sam, and Sydney went to see the Myrtle Beach Pelicans’ Game. They each bought a ticket and a hat that co

o-na [289]

Answer:

You can't answer this question without knowing the total amount of money they all had in total.

3 0

3 years ago

Simplify the expression:<br> 1+4(2x-3)

irina1246 [14]

Answer:

8x - 11

Step-by-step explanation:

just do the multiplications and add things up.

1 + 4(2x - 3) = 1 + 8x -12 = 8x - 11

6 0

3 years ago

Read 2 more answers

what was the interest rate if your balance on an investment of 857 dollars at the end of six years is 1268.36 dollars

Mumz [18]

<h3>The interest rate is 8 % if your balance on an investment of 857 dollars at the end of six years is 1268.36 dollars</h3>

<em><u>Solution:</u></em>

Given that,

Principal = $ 857

Amount = $ 1268.36

Number of years = 6

Rate of interest = ?

Simple Interest = Amount - principal

Simple Interest = 1268.36 - 857

Simple Interest = 411.36

<em><u>Use the formula,</u></em>

$Simple Interest = \frac{ p \times n \times r}{100}\\\\411.36 = \frac{ 857 \times 6 \times r}{100}\\\\41136 = 5142 \times r\\\\r = \frac{41136}{5142}\\\\r = 8 \%$

Thus the interest rate is 8 %

3 0

3 years ago

Read 2 more answers

Left on together, the cold and hot water faucets of a certain bathtub take 4 minutes to fill the tub. If it takes the hot water

Mnenie [13.5K]

Answer:

Or if you don't want any rounding it will be 115.38461538461

6 0

2 years ago

If you can help me with Slope Intercept plz help me

11Alexandr11 [23.1K]

Answer:

y = 6/5x - 2 (or y = 1.2x - 2)

Step-by-step explanation:

To find the slope-intercept form ( = mx + b) you need to rearrange the equation of the line:

Step 1 - Add 18x to both sides

15y = 18x - 30

Step 2 - Divide both sides by 15.

y = 6/5x - 2

4 0

2 years ago