25x2 - 64 = 0
I need help solving this using quadratic function.

Answers

Answer 1

Answer:

Step-by-step explanation:

25x^2-64=0

x=8/5, -8/5

Answer 2

Answer: x = 8/5, -8/5

Step-by-step explanation:

25x^2 -64 = 0

(5x+8)(5x-8) = 0

x = 8/5, -8/5


Related Questions

What is x=7 in slope intercept form
Please help

Answers

Answer: x=7 or undefined

Step-by-step explanation:

We can't write x=7 in slope intercept form, since it doesn't have an actual slope or y-intercept. You could put undefined, since the slope is undefined.

Find the slope between the points (2,4) and (11,1)

Answers

Answer:7?

Step-by-step explanation:

Rise 7

Run. 1

Answer:

-3/9

Step-by-step explanation:

m = 1 - 4/11 - 2 (this is the form it's in: m = y2 - y1/x2 - x1)

m = -3/9

rise: -3

run: 9

(m = slope)

if this doesn't make sense look up "how to find the slope of two points"

hope this helps!

Christian walked directly south for 3.5
miles then walked 4.5 miles directly
east. How far is he from where he started

Answers

X is approximately equal to 5.7 miles

Vijay’s wages were increased from £115 per week to £130 per week.

What was the percentage increase to one decimal place?

Answers

Answer:

13%

Step-by-step explanation:

Increase = (New Number - Old Number) / Old Number

(130 - 115) / 115

15/115 = 0.130434783.

0.130434783 * 100 (to get the percentage) = 13.0%

The square below represents one whole.
Express the shaded area as a fraction, a decimal, and a percent of the whole.
Fraction:
Decimal
Percent:

Answers

9514 1404 393

Answer:

6/100.660%

Step-by-step explanation:

6 of the 10 bars are shaded, so the shaded area is 6/10 of the whole.

"Six tenths" as a decimal is 0.6, that is, a number with 6 in the tenths place.

To convert the number to a percent, multiply either the fraction or the decimal by 100%.

  0.6 × 100% = 60%

Can someone tell me the answer and explanation plz I’ll give brainlist and points

Answers

Answer:

b

Step-by-step explanation:

I double checked, its b

Sharon kicks a ball from the ground into the air with an upward velocity of 64 feet per second. The function h = -16t2 + 64t models the height h, in feet, of the ball at time t, in seconds. When will the ball reach the ground again?

1 second after the ball is thrown

2 seconds after the ball is thrown

3 seconds after the ball is thrown

4 seconds after the ball is thrown

i believe that the answer is 4 seconds but i dont understand how to work it out

Answers

Answer:

Step-by-step explanation:

use the equation of motion for a projectile moving un der gravity h = ut + (1/2)gt^2 where u = initial velocity, h = height, t = time and g = acceleration due to gravvity here u = 64 fts-1 and g = -32 ft s-2

what’s the slope of (5,9) and (3,2)

Answers

Answer:

m=7/2

Step-by-step explanation:

Melody is running in a 5K event. Her father
records her time at three places during the
event as shown in the table below.

Answers

Answer:

a

Step-by-step explanation:

i just know

The expression (-4)-1)(3)(-2) is equal to

Answers

-4 times -1 is 4
4 times 3 is 12
12 times -2 is -24

factor x^2+5x-84 please

Answers

Answer:

Step-by-step explanation:

The factors of 84 are: [tex]\pm: 1, 84, 2, 42, 3, 28, 4, 21, 6, 14, 7, 12 ...[/tex]

7 and 12 can make 5. Since 84 is negative and 5 is positive, the larger number of the two must be the positive number in the factorization. In this case, it is

[tex](x+12)(x-7)[/tex]

What is the solution to this system of equations?
5x + 2y = 29
x + 4y = 13

Answers

50 percent is c.x=5,y=2.

Answer:

X= 5, y= 2

Step-by-step explanation:

Which pair of complex numbers has a real-number product?
* (1 + 3))(61)
* (1 + 3) (2-3)
* (1 + 3) (1-3)
* (1 + 3) (31)

Answers

Answer:

(1 + 3i)(1 - 3i)

Step-by-step explanation:

The product of a complex number and its conjugate produce a real number.

given a ± bi the conjugate is a ∓ bi ← where a and b are real, then

(a + bi)(a - bi)

= a² - b² ← a real number

The only pair of conjugate complex numbers in the list is

(1 + 3i)(1 - 3i)

The pair of complex numbers that has a real-number product is:

(1 + 3) (1-3) = -8

Option C is the correct answer.

What is an expression?

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

For a pair of complex numbers to have a real-number product, their imaginary parts must cancel out when the product is expanded.

Let's expand each pair of complex numbers and see which one has a

real-number product:

(1 + 3) x (61) = 61 + 183i

This product has a non-zero imaginary part, so it is not a real number.

(1 + 3) x (2-3) = -5 + 5i

This product has a non-zero imaginary part, so it is not a real number.

(1 + 3) x (1-3) = -8

This product has no imaginary part, so it is a real number.

(1 + 3) x (31) = 124 + 124i

This product has a non-zero imaginary part, so it is not a real number.

Therefore,

The pair of complex numbers that has a real-number product is:

(1 + 3) (1-3) = -8

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ7

An online bookstore sells all paperback books for x dollars each. Aidan bought 7 paperback books and spent $3.95 on shipping. Nina bought 11 paperback books and spent $5.25 on shipping.What expression represents the total amount that Aidan and Nina spent?

Answers

Answer:

Here's the answer

Step-by-step explanation

y= 18x+9.20

i really need help on 2 !!

Answers

Answer:

x=2

y=-1

z=3

Step-by-step explanation:

X = 7+2y-z

3(7+2y-z)+y-z=2

21+6y-3z+y-z=2

21+7y-4z=2

7y-4z=-19 (subtract both side by 21)

2(7+2y-z)+3y+2z=7

14+4y-2z+3y+2z=7

14+7y=7

7y=-7 (subtract both side by 14)

y=-1 (divide both side by 7)

{7y-4z=-19

{y=-1

7.-1 - 4z=-19

-7-4z=-19

-4z=-12

Z=3

x=7+2y-z (y=-1 z=3)

x=7+2.-1 - 3

x=7-2-3

x=2

Find the equation of the line through point (4,−7) and parallel to y=−23x+32.

Answers

Answer:

y = -23x + 85

Step-by-step explanation:

for an equation to be parallel to another, they must have the same slope. So plugging in (4, -7) we get -7 = -23(4) + P. P being the new y intercept we must find. Now simple algebra add -23(4) = -92 to both sides and we get 85 = P. Plug in to y = mx + b and we get

y = -23x + 85

Bobby and Petra are running a lemonade stand and they charge 45 cents for each glass of lemonade. To break even they must make $25. How many glasses of lemonade they must sell to break even?​

Answers

Answer: 56

Step-by-step explanation:

I dont need the work just the answer pls :)

Answers

Answer:

[tex]\sqrt{29}[/tex]

Find the slope of the line given the table
a. m = -3
b. m = -2/3
c. m = 2/3
d. m = -3/2​

Answers

Answer:

D. -1.5

Step-by-step explanation:

D. M=-3/2

10-7=-3
4-2=2

Solution -3/2

which phrase represents 3y +9

Answers

please list the phrases if you would like to get an accurate answer :)

PLSSSSSS HELP ME I WILL GIVE BRAINLY

Answers

Answer: (2,2)

Step-by-step explanation:

The solution of the system of equations is the intersection point, or the point where both lines meet. Looking at the graph, we see that the blue and red line meet at (2,2). That means the solution is (2,2).

We can also solve this algebraically. Since we are given that y=x, we can plug that into the equation and solve.

y+2y=6       [combine like terms]

3y=6            [divide both sides by 3]

y=2

Since we are told that y=x, we know that x is also 2. This tells us that the solution is also (2,2).

Can u tell me the answers for 2 and 3

Answers

Answer:

at least 1.7

Step-by-step explanation:

i think sorry if wrong

Answer:

Step-by-step explanation:

i believe the question is asking for slope

so for the first one: it's -1/2

second one: 3/2

Write the equation based on the graph

Answers

Answer:

3x+3

Step-by-step explanation:

rise over run and y-intercept

need help ASAP please

Answers

The answer is P
Please mark brainliest

what is the value of f (4) if it is defined by f (x) =2x+3

Answers

Answer:

11

Step-by-step explanation:

Substitute 4 for x

2(4) +3

Answer:

11

Step-by-step explanation:

F(x) = 2x+3 is just a function, so if you replace one of the "x" with 4 you have to replace the other one so it just becomes

F(4) = 2(4) + 3 then you do 2(4) = 8 then add 3 to it and it gets you 11.

hope this helps

ANSWER ASAP PLEASE!!! I NEED HELP!!!

Answers

Answer:

2 cm

Step-by-step explanation:

Answer:

the answer is 2cm

Step-by-step explanation:

Identify the y-intercept of the function y = -4x + 2.

Answers

The answer to y intercept is (0,2)

Answer:

It's supposed to be y=2

y is the dependent variable = -4 is slope and x is independent plus 2 which is y intercept

Find the measure of

Answers

Answer:

180-43=137....................

Write an equation of the line through the point (–2, 5) that is perpendicular to the line y = 2/3x-2

Answers

Answer:

y= -3/2x + 2

Step-by-step explanation:

Jessica waxes 20m squared of the floor in 3/5 of an hour and waxes the floor at a constant rate. How many square meters can she wax per hour?

Answers

Answer:

E

Step-by-step explanation:

Answer:

33.3333333

Step-by-step explanation:

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