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EastWind [94]
3 years ago
14

PLZ HELP ASAP!

Mathematics
2 answers:
Nataly [62]3 years ago
8 0
The answer is -7. Plug it in if you need to check
34kurt3 years ago
4 0
<span>To evaluate the given expression, we need the values of each variable and substitute these values to the expression. Then, go on with the operations involved.

</span>4x - y - 2z
4(-2) - (3) - 2(-2)
-8 - 3 + 4
-7
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A new theater is being built for the city ballet. The balcony has 200 seats. The floor has 10 rows with x seats in each row. The
Andreyy89

Answer:

B

Step-by-step explanation:

Because I got it right

6 0
3 years ago
if the ratio of minutes spent on homework to the number of weeknights is 120 to 5 what is the unit of homework per night
sashaice [31]
To solve this problem, divide both sides by 5 and you get a ratio of 24 to 1. The answer is 24 minutes per night. I hope this helped!
8 0
4 years ago
Read 2 more answers
Three consecutive integers have a sum of 72. find the integers
mariarad [96]

Set the first number as x.

Note that three consecutive integers are 3 numbers that are 1 greater than the previous.

(x) + (x + 1) + (x + 2) = 72

Simplify. Combine like terms

3x + 3 = 72

Isolate the x. Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS. First, subtract 3 from both sides

3x + 3 (-3) = 72 (-3)

3x = 69

Next, divide 3 from both sides

3x/3 = 69/3

x = 23

------------------------------------------------------------------------------------------------------------------------

23 is your first answer

Plug in 23 for each x.

------------------------------------------------------------------------------------------------------------------------

(x) + (x + 1) + (x + 2) = 72

(x) = 23

(x + 1) = 23 + 1 = 24

(x + 2) = 23 + 2 = 25

23, 24, 25 are your answers

------------------------------------------------------------------------------------------------------------------------

<em>~Rise Above the Ordinary</em>

4 0
4 years ago
Read 2 more answers
What are three sets of fractions that can be multiplied to get 15/56?
vredina [299]
Much more than just 3.

3 0
4 years ago
Vertex of x^2 + 6x + 17
jekas [21]

We have: f(x)=x^2+6x+17

Method 1.

Use: (*)\ \ \ \ \ (a+b)^2=a^2+2ab+b^2

and the vertex form f(x)=a(x-h)^2+k

(h, k) - the coordinates of a vertex

x^2+6x+17=x^2+2\cdot x\cdot3+17=\underbrace{x^2+2\cdot x\cdot3+3^2}_{(*)}-3^2+17\\\\=(x+3)^2+8\to h=-3;\ k=8

Answer: (-3, 8)

Method 2.

For f(x)=ax^2+bx+c the coordinates of a vertex (h, k) are equal

h=\dfrac{-b}{2a};\ k=f(h)=\dfrac{-(b^2-4ac)}{4a}

We have: f(x)=x^2+6x+17\to a=1;\ b=6;\ c=17

Substitute:

h=\dfrac{-6}{2\cdot1}=\dfrac{-6}{2}=-3\\\\k=f(-3)=(-3)^2+6(-3)+17=9-18+17=8

Answer: (-3, 8)

5 0
4 years ago
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