Ask question

Ask question

All categories

3 years ago

9

What are the possible values of x in 32x + 20 = 28x − 16x2?

2 answers:

ladessa [460]3 years ago

5 0

4x2+x+5=0
(2x+1/4)^2=-79/16
2x+1/4=(√79/4) i or 2x+1/4=-(√79/4) i
x=(√79/8) i -1/8 or -(√79/8) i -1/8

wel3 years ago

4 0

<span><span><span>2x</span>+20</span>=<span><span>−<span>16<span>x2</span></span></span>+<span>28x</span></span></span>Step 2: Subtract -16x^2+28x from both sides.<span><span><span><span>2x</span>+20</span>−<span>(<span><span>−<span>16<span>x2</span></span></span>+<span>28x</span></span>)</span></span>=<span><span><span>−<span>16<span>x2</span></span></span>+<span>28x</span></span>−<span>(<span><span>−<span>16<span>x2</span></span></span>+<span>28x</span></span>)</span></span></span><span><span><span><span>16<span>x2</span></span>−<span>26x</span></span>+20</span>=0</span>Step 3: Use quadratic formula with a=16, b=-26, c=20.<span>x=<span><span><span>−b</span>±<span>√<span><span>b2</span>−<span><span>4a</span>c</span></span></span></span><span>2a</span></span></span><span>x=<span><span><span>−<span>(<span>−26</span>)</span></span>±<span>√<span><span><span>(<span>−26</span>)</span>2</span>−<span><span>4<span>(16)</span></span><span>(20)</span></span></span></span></span><span>2<span>(16)</span></span></span></span><span>x=<span><span>26±<span>√<span>−604</span></span></span><span>32</span></span></span>

You might be interested in

7r+3r-8=8+2r. Solve?

Mazyrski [523]

Given: 7r+3r-8=8+2r

Simplify: 10r-8=8+2r

Addition: add 8 to each side: 10r=16+2r

Subtraction: Take 2r from each side: 8r=16

Division: Divide each side by 8 for answer: r=2

Answer: r=2

4 0

4 years ago

Read 2 more answers

A triangle with two congruent sides is called a(n) triangle.

mars1129 [50]

A triangle with 2 congruent sides is an <u>ISOSCELES</u> triangle.

Answer: Isosceles

FYI: A triangle with 3 congruent sides is an equilateral triangle.

4 0

4 years ago

Read 2 more answers

Put these least to greatest 0.85,0.93,8/9

tekilochka [14]

from least to greatest: 0.85, 8/9 (0.88 as a decimal), 0.93

7 0

3 years ago

Read 2 more answers

Karina needs a total score of at least 627 on three games of bowling to break the league record. Suppose she bowls 222 on her fi

irga5000 [103]

X+y+z≥627
x=222
y=194

222+194+z≥627
if we solved for z then
z≥221

3 0

3 years ago

What is a decimal that is equivalent to the fraction 28<br> ___<br> 100

Jobisdone [24]

The decimal that’s equivalent to 28/100 is 0.28

4 0

3 years ago

Read 2 more answers