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3 years ago

What ratio is equal to 7/8

Mathematics

1 answer:

Aneli [31]3 years ago

3 0

21:28 is equal to 7:8

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Indicate in standard form the equation of the line passing through the given point and having the given slope.

Firdavs [7]

Point slope form is y-0=5(x-4). In y=mx+b form it's y= 5x-20 if you need to graph it.

7 0

4 years ago

What is the equation of the line that passes through the point (-2,0) and has a slope of -2

Tcecarenko [31]

Answer:

y = -2x -4

Step-by-step explanation:

The equation of a line is y = mx + b, where m is the slope of the line, and b is the y-intercept. We are told that the slope of the line is -2, so we can start with

y = mx + b

y = -2x + b

We can figure out the value of b by plugging in the coordinates of the point given (-2, 0)

0 = -2(-2) + b

0 = 4 + b

Subtract 4 from both sides of the equation

-4 = b

Then plug that value of b back into the equation above:

y = -2x + (-4) or y = -2x -4

6 0

3 years ago

Read 2 more answers

Please Help!!<br><br> Write in exponential form.

Nimfa-mama [501]

Answer:

C, $5e^{i(5\pi/3)$

Step-by-step explanation:

Euler's formula:

$e^{ix}=\cos{x}+i\sin{x}$

Looking at the expression in the parentheses, your x is explicitly given to you as $5\pi/3$ , so using Euler's formula:

$5\left(\cos\frac{5\pi}{3}+i\sin{\frac{5\pi}{3} })=5e^{i(5\pi/3)$

Which is C.

8 0

4 years ago

Describe the steps you would use to factor 2x3 + 5x2 – 8x – 20 completely. Then state the factored form.

WARRIOR [948]

The polynomial $2x^3 + 5x^2-8x-20$ may have solutions which are the divisors of -20, therefore -20 has the following divisors: $\pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20$ .
If x=1, then $2\cdot1^3 + 5\cdot1^2-8\cdot1-20=-20\neq 0$ ,
if x=-1, then $2\cdot(-1)^3 + 5\cdot(-1)^2-8\cdot(-1)-20=-9\neq 0$ ,
if x=2, then $2\cdot2^3 + 5\cdot2^2-8\cdot2-20=0$ , then x=2 is a solution and you have the first factor (x-2).
If x=-2, then $2\cdot(-2)^3 + 5\cdot(-2)^2-8\cdot(-2)-20=0$ , then x=-2 is a solution, so you have the second factor (x+2).
Since x-2 and x+2 are two factors of $2x^3 + 5x^2-8x-20$ , then the polynomial $x^2-4$ is a divisor of $2x^3 + 5x^2-8x-20$ and dividing the polynomial $2x^3 + 5x^2-8x-20$ by $x^2-4$ you obtain
$2x^3 + 5x^2-8x-20=(x-2)(x+2)(2x+5)$ .

5 0

3 years ago

Read 2 more answers

HWLP PLEASE I don't know answer

netineya [11]

Z + 3z + 1 + 204 + 54 = 360
4z + 259 = 360
4z = 360 - 259
4z = 101
z = 101/4
z = 25.25 °

7 0

3 years ago