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2 years ago

Someone please help me. I will give you hella points I need this answer to like graduate type

Mathematics

1 answer:

PtichkaEL [24]2 years ago

8 0

Answer:

$9 and $7

Step-by-step explanation:

The first equation:

x + 2y = 23

The second equation:

2x + 3y = 39

Convert to slope-intercept form:

x + 2y = 23 ⇒ 2y = -x + 23 ⇒ y = -1/2x + 11.5
2x + 3y = 39 ⇒ 3y = -2x + 39 ⇒ y = -2/3x + 13

The graph is attached

Intersection point is (9, 7)

Adult tickets cost $9
Child tickets cost $7

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Evaluate g(x)=3x when x=−2,0, and 5. g(−2)= g(0)= g(5)=

Snezhnost [94]

Answer:

g(-2)= -6, g(0)=0, g(5)=15

Step-by-step explanation:

Plug in each value of x into the function g(x) aka 3(x).

Multiply by three.

4 0

2 years ago

Evaluate: 2 - (-9) + (-18) / 3 x 2 -10

Gre4nikov [31]

Answer:

Step-by-step explanation:

2+9-18/3x2-10

Lets follow order of ops.

/, x, +, -

Divide first.

2 + 9 - (18/3) x 2 - 10

2+9-6x2-10

Now we multiply.

2+9-(6x2)-10

2+9-12-10

Add.

11-22

Now subtract.

11-22=-11

---

hope it helps

5 0

2 years ago

Fill in the missing work and justification for step 2 when solving 3(x + 2) = 12.

Aleksandr-060686 [28]

Answer:

3x + 6 = 12; Distributive Property

Step-by-step explanation:

3(x + 2) = 12

The next step is:

3*x + 3*2 = 12
3x + 6 = 12

This is a distributive property

Correct choice is A

3 0

2 years ago

What represents the inverse of the function f(x)=4x

Yuki888 [10]

Answer:

$\frac{x}{4}$

Step-by-step explanation:

The given function is

f(x) = 4x

As we know

f(x) = y, which implies x= $f^{-1} (y)$

Therefore,

y = 4x

x = $\frac{y}{4}$

as x= $f^{-1} (y)$

So,

$f^{-1} (y) = \frac{y}{4}$

replacing y by x in the above expression

$f^{-1} (x) = \frac{x}{4}$

So our inverse function is $\frac{x}{4}$

4 0

2 years ago

Which of the following is the discriminant of the polynomial below x^2+4x+5

steposvetlana [31]

Answer:

$\huge\boxed{\sf Discriminant = -4}$

Step-by-step explanation:

Comparing it with quadratic equation $ax^2 + bx + c = 0$ , we get:

a = 1 . b = 4 and c = 5

So,

Discriminant = $b^2-4ac$

D = (4)²-4(1)(5)

D = 16 - 20

D = -4

Hence,

Discriminant = -4

$\rule[225]{225}{2}$

Hope this helped!

4 0

2 years ago