1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brums [2.3K]
3 years ago
13

X(x+8) = 256 square yards solve for x im having a lot of trouble please help

Mathematics
1 answer:
Harrizon [31]3 years ago
7 0
We want to solve
x(x + 8) = 256

Expand the left side.
x² + 8x = 256
Collect all terms on the left side.
x² + 8x - 256 = 0

Solve with the quadratic formula.
x = (1/2)*[-8 +/- √(8² -4*1*(-256)) ]
   = -4 +/- (1/2)*√(1088)
   = -4 +/- 16.4924
x = 12.4924, or x = -20.4924

Answer: x = 12.4924 or x = -20.4924

You might be interested in
We have a jar of coins, all pennies and dimes. All together, we have 309 coins, and the total value of all coins in the jar is $
Vinvika [58]

There are 130 pennies in the jar

Step-by-step explanation:

We have a jar of coins

  • All coins are pennies and dimes
  • There are 309 coins in the jar
  • The total value of all coins in the jar is $ 19.2

We need to find the number of pennies in the jar

Assume that there are p pennies and d dimes in the jar

∵ There are p pennies and d dimes in the jar

∵ There are 309 coins in the jar

∵ All the coins in the jar are pennies and dimes

∴ p + d = 309 ⇒ (1)

∵ The total value of all coins in the jar is $ 19.2

∵ $1 = 100 cents

∴ $19.2 = 19.2 × 100 = 1920 cents

∵ 1 penny = 1 cent

∵ 1 dime = 10 cents

∴ p + 10 d = 1920 ⇒ (2)

Now we have system of equations, we can solve them to find p

∵ p + d = 309 ⇒ (1)

∵ p + 10 d = 1920 ⇒ (2)

- Multiply equation (1) by -10 to eliminate d

∵ (-10)(p) + (-10)(d) = (-10)(309)

∴ -10 p - 10 d = -3090 ⇒ (3)

Add equations (2) , (3)

∴ -9 p = -1170

- Divide both sides by -9

∴ p = 130

There are 130 pennies in the jar

Learn more:

You can learn more about the system of equations in brainly.com/question/3739260

#LearnwithBrainly

8 0
3 years ago
How many people were in the sample?<br><br><br><br> 45<br> 90<br> 5<br> 10
Nina [5.8K]
10

The x’s represent just the people, and because the bottom line only represents time it doesn’t affect the amount of people.
4 0
3 years ago
Read 2 more answers
What is the area of this trapezoid
padilas [110]
Your answer is <span>132^2 

......</span>
4 0
3 years ago
Read 2 more answers
Shapes I and II are
xz_007 [3.2K]
What is the meaning of this question
8 0
3 years ago
2.5/6 = h/9 h=? What does this mean
omeli [17]

Answer:

h = 3.75

Step-by-step explanation:

Step 1: Write equation

2.5/6 = h/9

Step 2: Solve for <em>h</em>

  1. Cross multiply: 22.5 = 6h
  2. Divide both sides by 6: 3.75 = h
  3. Rewrite: h = 3.75

Step 3: Check

<em>Plug in h to verify it's a solution.</em>

2.5/6 = 3.75/9

0.416667 = 0.416667

5 0
3 years ago
Read 2 more answers
Other questions:
  • Write an equation for the work necessary to stretch the spring from the relaxed state to distance x1
    14·1 answer
  • if n is the largest two digit nuber that can be expressed as the product of two prime numbers greater than 3, what is the value
    15·1 answer
  • Ignore my errors please. how would i solve these problems... please explain step by step
    12·1 answer
  • What is 36.948516 closer to 36.9 or 37
    11·2 answers
  • What is the value of “three less than the quotient of six and a number, increased by nine” when n = 3?
    8·2 answers
  • A local high school held a two-day fundraiser selling lunches. The equations shown represent the amount of money the school coll
    8·1 answer
  • The expression 1.021)^3t represents the interest that a credit union pays on a savings account.
    8·1 answer
  • Find the area of a square with a side length of 8 inches. a. A = sq. in. c. A = 64 cu. sq. in. b. A = 64 sq. in. d. none of the
    6·2 answers
  • Find the value of n in n5=32
    6·2 answers
  • The area of each circle is exactly
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!