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
il63 [147K]
4 years ago
11

Please help, thank you

Mathematics
1 answer:
madam [21]4 years ago
7 0

Answer:

\displaystyle x=\frac{-8\pm\sqrt{(8)^2-4(4)(-221)}}{2(4)}\ \text{; x = 6.5 and x = -8.5}

Step-by-step explanation:

Subtract the right side of the given equation to put it into standard form:

  4x² +8x -221 = 0

Then the coefficients used in the quadratic formula are ...

  • a = 4
  • b = 8
  • c = -221

When these are filled into the form ...

\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

the result is as shown above.

You might be interested in
Find x and I will give you brainliest answer award and 10 points​
sasho [114]

Answer: x = 6

Formula: (x+5)=11

Step-by-step explanation:

We know that an area of a triangle is half of a rectangle.

The bottom side must equal 11, since if the figure was a rectangle, the area would be multiplied by 2, giving us 44.

What minus 5 equals 11?

6.

So x must equal 6.

6 0
3 years ago
Solve for y.
ladessa [460]

Answer:

y = 9/b

Step-by-step explanation:

by = 9 solved for b yields y = 9/b.

7 0
3 years ago
The sum of two even consecutive integers is 46 find the intergers
Anarel [89]

Answer:

First number = 22

Second number = 24

Step-by-step explanation:

Let the first number = x

Let the second number = x + 2

According to the question ,

The sum of two even consecutive ingers = 46.

so,

x +  x + 2  = 46

2x + 2 = 46

2x = 46 - 2

2x = 44

x = 44 / 2

x = 22

∴ FIRST NUMBER = X

                              = 22

  SECOND NUMBER = X + 2

                                   = 22 + 2

                                   = 24.

4 0
3 years ago
Whoever answers first i will mark as brainiest
bija089 [108]

Answer:

B. 7 inches

Step-by-step explanation:

The surface area of a cube is denoted by: A = 6s², where s is the side length.

Here, we know that A = 294 in², so plug this into the equation to solve for s:

A = 6s²

294 = 6s²

s² = 49

s = √49 = 7

The answer is thus B, 7 inches.

7 0
3 years ago
Complete the solution of the equation. Find the value of y when x equals -3. 2x-5y =-21
vesna_86 [32]
The answer is y=3 ....

5 0
4 years ago
Other questions:
  • 24.00 And sold it for 34.00 What is the percent of increase rounded to the nearest tenth
    5·1 answer
  • 3) Find the length of a rectangular lot with a perimeter of 92 m if the length is 8 m more than
    14·1 answer
  • Capturing nature’s emotion and energy, as seen in this painting by Monet and heard in Debussy’s “The Snow Is Dancing,” is a typi
    12·2 answers
  • HELPPP<br> What is the value of d ?<br><br> 84<br> 80<br> 100<br> 50
    13·2 answers
  • Which of the following ordered pairs (x,y) satisfies
    9·1 answer
  • Write these numbers in order from least to greatest:<br> -3<br> 6<br> -8<br> -2.5<br> 1/4<br><br> 0
    8·2 answers
  • Which is equal to 9 x 8?
    12·2 answers
  • Which rules has a scale factor of 5 and shifted up and to the left?
    15·1 answer
  • A group of friends wants to go to the amusement park. They have $134.75 to spend
    8·1 answer
  • If there are 300 cars and 80 of them are black, what percent of the cars are black
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!