75% of ____ =48 Helppppp

Please help. What is the intermediate step in the form (x+a)^2=b as a result of completing the square for the following equation

nevsk [136]

Step-by-step explanation:

It makes 2x^2-20-206=0

Find D

Then find X1 and X2

7 0

3 years ago

What are the slope and the y-intercept of the linear function that is represented by the table? X -1, -1/2, 0, 1/2 Y -3/2, 0. 3/

JulijaS [17]

Answer: Slope: 3, Y-intercept: 3/2

Step-by-step explanation:

x y

-1 -3/2

-1/2 0

0 3/2

1/2 3

Since we are given an x,y table, we can easily spot the y-intercept. The y-intercept has the x value of 0. Therefore, the y-intercept is 3/2.

Now, we can use the formula $m=\frac{y_{2}-y_{1} }{x_{2} -x_{1} }$ to find the slope.

$m=\frac{\frac{3}{2} -0}{0-(-\frac{1}{2})}$

$m=\frac{\frac{3}{2} }{\frac{1}{2} } =\frac{3}{2} *2=3$

Slope: 3

Y-intercept: 3/2

6 0

3 years ago

the lenght of the longer leg of a right triangle is 9 ft longer than the lenght of the shorter leg x. The hypotenuse is 9 ft sho

trasher [3.6K]

Answer:

see below

Step-by-step explanation: 5 23 8 03

the lenght of the longer leg of a right triangle is 9 ft longer than the lenght of the shorter leg x. The hypotenuse is 9 ft shorter than twice the lenght of the shorter leg.

shorter leg = x

longer leg = x + 9

hypotenuse = 2x - 9

Pythagorean theorem = a² + b² = c²

shorter-leg² + longer-leg² = hypotenuse²

x² + (x+9)² = (2x - 9)² solve for x

x² + (x+9) (x+9) = (2x - 9)(2x - 9)

x² + (x²+18x+81) = (4x² - 36x + 81)

(2x²+18x+81) = (4x² - 36x + 81)

0 = 2x² -54x

0 = x(2x - 54)

0 = x and 0 = 2x -54

54 = 2x

27 = x

shorter leg = 27

longer leg = 36

hypotenuse = 45

divided all the values by 9 and you get a 3, 4, 5 right triangle, so the answer checks correct

6 0

3 years ago

I need help learning algebra 2 i don't know how to do any of it

siniylev [52]

Answer:

Step-by-step explanation:

Since you haven't provided any algebra 2 questions I can only give you advice on how to get better with algebra 2. Algebra 1 is mainly about learning how to isolate the variables in order to solve for it. Algebra 2 implements these knowledge and applies it to a handful of already designed equations. Some of these include linear, quadratic equation, and slope intersect. Memorize these equations and the rest is simply applying what you learned in Algebra 1. The best way to get better is through practice. Use all the resources available such as books, videos, and tutor help.

4 0

3 years ago

The ten's digit of a two digit number is 1 more than 4 times the units' digit. if 63 is subtracted from the number, the order of

ser-zykov [4K]

Let x be the digit in the tens place and y be the digit in the ones place.
so, the digit is xy

The ten's digit of a two digit number is 1 more than 4 times the units' digit.
x = 4y + 1

63 is subtracted from the number, the order of the digits is reversed
10x + y - 63 = 10y + x
9x - 9y = 63

x = 4y + 1 ------------ (1)
9x - 9y = 63 ---------- (2)

Sub (1) into (2)
9(4y + 1) - 9y = 63
36y + 9 - 9y = 63
27y = 63 - 9
27y = 54
y = 2 ------- sub into (1)

x = 4(2) + 1 = 9

x = 9, y = 2
The number is 92

3 0

4 years ago