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
Nostrana [21]
2 years ago
13

X² + 8x = 10 solve this quadratic equation by completing the square

Mathematics
1 answer:
kkurt [141]2 years ago
8 0
X = -4 plus or minus radical 26. Steps and answer are in picture

You might be interested in
Children 12 and under eat free at a local restaurant. If x represents age, write an inequality to represent people who do not ge
nadya68 [22]

Answer:

Step-by-step explanation:

3 0
3 years ago
2. How many real number solutions are there to the equation 0 =-3x2 + x - 4?
goblinko [34]

For this case we have the following quadratic equation:

-3x ^ 2 + x-4 = 0

Where:

a = -3\\b = 1\\c = -4

By definition, the discriminant of a quadratic equation is given by:

d = b ^ 2-4 (a) (c)

We have to:

d> 0: Two different real roots

dTwo different complex roots

d = 0: Two equal real roots

Substituting the values we have:

d = 1 ^ 2-4 (-3) (- 4)\\d = 1-48\\d = -47

So, we have two different complex roots

Answer:

Two different complex roots

7 0
3 years ago
Fill in the blank with a constant, so that the resulting expression can be factored as the product of two linear expressions: 2a
Vitek1552 [10]

Answer:

2ab - 6a + 5b - 15

Step-by-step explanation:

Given

2ab - 6a + 5b + \_

Required

Fill in the gap to produce the product of linear expressions

2ab - 6a + 5b + \_

Split to 2

(2ab - 6a) + (5b + \_)

Factorize the first bracket

2a(b - 3) + (5b + \_)

Represent the _ with X

2a(b - 3) + (5b + X)

Factorize the second bracket

2a(b - 3) + 5(b + \frac{X}{5})

To result in a linear expression, then the following condition must be satisfied;

b - 3 = b + \frac{X}{5}

Subtract b from both sides

b - b- 3 = b - b+ \frac{X}{5}

- 3 = \frac{X}{5}

Multiply both sides by 5

- 3 * 5 = \frac{X}{5} * 5

X = -15

Substitute -15 for X in 2a(b - 3) + 5(b + \frac{X}{5})

2a(b - 3) + 5(b + \frac{-15}{5})

2a(b - 3) + 5(b - \frac{15}{5})

2a(b - 3) + 5(b - 3)

(2a + 5)(b - 3)

The two linear expressions are (2a+ 5) and (b - 3)

Their product will result in 2ab - 6a + 5b - 15

<em>Hence, the constant is -15</em>

3 0
3 years ago
NEED HELP ASAP!!!
svet-max [94.6K]

Answer:

The answer is 44!

Step-by-step explanation:

npp, yw!!! hahaha thank me later okay??

love that more me ahaha! np btw ofc!

6 0
3 years ago
Read 2 more answers
Under his cell phone plan Jason pays a flat cost of $60.50 per month and four dollars per gigabyte he wants to keep his bill at
Over [174]

Answer:

2 gigabytes of data

Step-by-step explanation:

Given

Amount Jason keeps per month = $68.90

Cost of flat per month = $60.50

Balance for data = 68.90-60.50

Balance for data = $8.40

If 1Gigabyte = $4

x = $8.40

Cross multiply

4x = 8.40

x = 8.40/2

x = 2.20

Hence Jason can only use 2 gigabytes of data while staying within his budget

7 0
3 years ago
Read 2 more answers
Other questions:
  • A sprinter ran a race in 11 seconds. What is the domain of this graph?
    13·1 answer
  • I know I'm asking a lot but could someone please do this sheet for me I'm really behind on homework
    5·1 answer
  • an airline ramp with a base of 50 makes an angle of 27 with the ground. find the distance a person will walk on a ramp round to
    8·1 answer
  • NEED HELP FAST PLEASE<br> Evaluate the limit.<br><br> a.4<br> c.1<br> b.2<br> d.limit does not exist
    5·1 answer
  • A piece of paper graph y=-3x-2
    8·1 answer
  • A line segment has<br> ____points.<br> Two<br> Zero<br> one<br> three
    5·1 answer
  • Two friends, Alejandro and Mia, agreed to split the check at a restaurant. Alejandro ordered $\$12$ worth of food and Mia ordere
    13·2 answers
  • Carpenters are installing hinges. They have 371 screws. Each hinge needs 3 screws. How many hinges can they install?
    9·1 answer
  • Cos X<br> Y<br> 12<br> X<br> 16<br> 20<br> Z<br> 4<br> A) 3/4<br> B) 4/3<br> C)3/5<br> D) 5/4
    13·1 answer
  • Is 0.7 =0.07 reasonable? explain why if its not or it is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!