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4 years ago

7

PLEASEEEEE HELP ASAP WILL MARK BRAINIEST

1 answer:

Vinil7 [7]4 years ago

8 0

Answer:

Step-by-step explanation:

2 I think?

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9x-2+10x+30=180 solve for x

disa [49]

Answer:

x=8

Step-by-step explanation:

8 0

3 years ago

What is the solution to {y>2x+5 (over) y<-3x+5

Alecsey [184]

Look at the picture.

$\left\{\begin{array}{ccc}y > 2x+5\\y < -3x+5\end{array}\right\\\\y=2x+5\\for\ x=-2\to y=(2)(-2)+5=-4+5=1\to(-2;\ 1)\\for\ x=0\to y=(2)(0)+5=0+5=5\to(0;\ 5)\\\\y=-3x+5\\for\ x=0\to y=(-3)(0)+5=0+5=5\to(0;\ 5)\\for\ x=2\to y=(-3)(2)+5=-6+5=-1\to(2;\ -1)$

8 0

3 years ago

The sum of the roots of 3x 2 + 11x - 4 = 0 is<br><br> -11/3<br> -4/3<br> 11/3<br> 4/3

givi [52]

Answer:

The correct option is 1.

Step-by-step explanation:

If a quadratic equation is defined as

$ax^2+bx+c=0$ .... (1)

Then the sum of the roots is -b/a and the product of roots is c/a.

The given equation is

$3x^2+11x-4=0$ ... (2)

From (1) and (2) we get a=3, b=11 and c=-4.

The sum of roots is

$\frac{-b}{a}=-\frac{11}{3}$

The sum of roots is $-\frac{11}{3}$ .

Therefore the correct option is 1.

5 0

4 years ago

Given f(x) = x2 + x − 2 and g(x) = 2x − 4, identify (f + g)(x).

Gnoma [55]

X^2 + x - 2 + 2x - 4....combine like terms
x^2 + 3x - 6 <=

7 0

4 years ago

Read 2 more answers

Find the volume of a pyramid with a square base, where the perimeter of the base is

Liula [17]

Answer:

33.4 m^3

Step-by-step explanation:

The edge length of the base is 1/4 of the perimeter, so is ...

(10.3 m)/4 = 2.575 m

Then the area of the base is the square of this, or ...

B = (2.575 m)^2 = 6.630625 m^2

The volume is ...

V = (1/3)Bh = (1/3)(6.630625 m^2)(15.1 m) ≈ 33.4 m^3

The volume of the pyramid is about 33.4 cubic meters.

3 0

4 years ago