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3 years ago

PLEASE HELP!!! 80 PTS!! i'm confused

Mathematics

2 answers:

Kryger [21]3 years ago

4 0

Answer:

First one's answer: C, each x value is multiplied by 2

Second one's answer: D, the equation is in absolute value format which causes the chart to go up in both the left and right direction.

Third one's answer: B, slope is rise over run which in the graph equals (-3/6=-1/2) and the y-intercept is positive three so the equation is B, f(x)=-1/2x+3

serious [3.7K]3 years ago

4 0

Answer:

c, d, b,

Step-by-step explanation:

got it right

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Plz help i dont want to fail

WINSTONCH [101]

Answer:

$p=\$1.50,\\c=\$0.75$

Step-by-step explanation:

We can write the following system of equations:

$\begin{cases}3p+2c=6.00,\\2p+3c=5.25\\\end{cases}$

Multiply the second equation by $-\frac{3}{2}$ to isolate and solve for $c$ :

$\begin{cases}3p+2c=6.00,\\-3p-4.5c=-7.875\\\end{cases},\\-2.5c=-1.875,\\c=\fbox{$\$0.75$}$ ,

Now plug in $c=0.75$ into any equation to solve for $p$ :

$3p+2(0.75)=6.00,\\3p=4.50,\\p=\fbox{$\$1.50$}$ .

6 0

3 years ago

Read 2 more answers

Create and solve an equation to find the unknown angle.

Travka [436]

whole angle=211.5

missing angle(x)=70.5

141+70.5=211.5

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Simply by adding like terms: -7x^2*y*z + 3y*z^2 - z*x^2*y - 4y

Bumek [7]

9514 1404 393

Answer:

-8x^2·y·z +3y·z^2 -4y

Step-by-step explanation:

It can be helpful to make sure the variables in each term are in alphabetical order. This makes it easier to see "like" terms. The variables in each term are ...

x^2 y z

y z^2

x^2 y z

Only the first and third terms are like terms, so those are the only ones that can be combined. Their coefficients are -7 and -1, so sum to -8. The combined term is of highest degree, so in standard form we list that term first.

= -8x^2·y·z +3y·z^2 -4y

6 0

3 years ago

85% of 16,000,000 people in the Netherlands own a bike, and most of them ride every day. Which equation would you use to find ho

Scilla [17]

Answer:

Multiplication 0.85 X 16,000,000=13600000

Step-by-step explanation:

0.85 X 16,000,000=13600000

4 0

2 years ago

HELP. there are 45 coins consisting of nickels, dimes and quarter making a total of 7 dollars. the number of dimes exceeds the n

MA_775_DIABLO [31]

9514 1404 393

Answer:

Step-by-step explanation:

Let n, d, q represent the numbers of nickels, dimes, and quarters, respectively. Then we have ...

n + d + q = 45

5n +10d +25q = 700

n -d = -5

Using n=d -5, we can substitute into the first two equations:

(d -5) +d + q = 45

2d +q = 50 . . . . add 5, collect terms [eq4]

5(d -5) +10d +25q = 700

15d +25q = 725 . . . . . . . . . . add 25, collect terms [eq5]

Multiplying [eq4] equation by 3 and subtracting that from 2/5 of [eq5], we have ...

(2/5)(15d +25q) -3(2d +q) = (2/5)(725) -3(50)

6d +10q -6d -3q = 290 -150

7q = 140 . . . . . . simplify

q = 20 . . . . . . . . divide by 7

There are 20 quarters.

8 0

3 years ago