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3 years ago

30m^2+27m-20=0. It’s quad

Mathematics

1 answer:

9966 [12]3 years ago

3 0

Answer:

m=−920+−1603129

Step-by-step explanation:

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What is y = mx b for x?

makkiz [27]

Y=mx+b
minus b tboth sides
y-b=mx
divide both sides by m
$\frac{y-b}{m}=x$

7 0

4 years ago

Read 2 more answers

Which expression can be used to find the surface area of the following triangular prism?

Orlov [11]

Answer:

214.

Step-by-step explanation:

To get Surface area take

(cross section area) × 2 +(perimeter of crossection area × length)

the cross section area is a triangle

so area of a triangle =1/2 base times height

1/2×8×2=8

let's get perimeter of cross section

the cross section is still at triangle so let's find its perimeter.

5+5+8=18

18×length of which is 11

18×11=198

and 188 + 16=214. that's the answer

maybe you can get a expression from the work that I've just done cuz I can't see the answers clearly in the picture you have taken.if you don't mind just send the picture back then I'll get the answer.

6 0

3 years ago

Find the value of x: please help fast

DedPeter [7]

Answer:

BC×AD=K

CKD= 180-32-79= 2x +180- 5x

-> x = (-32-79) : (-3) =37

4 0

4 years ago

Anybody know the correct answer?

earnstyle [38]

Since $\csc^2{x}=\frac{1}{\sin^2{x}}$ and $\cot^2{x}=\frac{\cos^2{x}}{\sin^2{x}}$ , we can rewrite the right side of the equation as

$\frac{1}{\sin^2{x}}-\frac{\cos^2{x}}{\sin^2{x}} =\frac{1-\cos^2{x}}{\sin^2{x}}$

Using the identity $\sin^2{x}+\cos^2{x}=1$ , we can subtract $\cos^2{x}$ from either side to obtain the identity $\sin^2{x}=1-\cos^2{x}$

substituting that into our previous expression, the right side of our equation simply becomes

$\frac{\sin^2{x}}{\sin^2{x}}=1$

We can now write our whole equation as

$3\tan^2{x}-2=1$

Adding 2 to both sides:

$3\tan^2{x}=3$

dividing both sides by 3:

$\tan^2{x}=1$

$\tan{x}=\pm1$

When 0 ≤ x ≤ π, tan x can only be equal to 1 when sin x = cos x, which happens at x = π/4, and it can only be equal to -1 when -sin x = cos x, which happens at x = 3π/4

4 0

3 years ago

Consider the function represented by 9x+3y= 12 with x as the independent variable. How can this function be written

jarptica [38.1K]

Answer:

b) y = f(x) = -3x+4

Step-by-step explanation:

Explanation

Given that the equation 9x+3y =12

Let 'x' be an independent variable and 'y' be the dependent variable then the function is of the form

y = f(x)

3 y = 12 - 9x

$y = \frac{-9x+12}{3}$

y = -3x+4

The function represented by y = -3x+4

5 0

3 years ago