Write y = –2/3x + 7 in standard form using integers. 2x + 3y = 21
3x – 2y = 21
–2x – 3y = 21
–2x + 3y = 7

Answers

Answer 1

Answer: The standard form of an equation of a line is written as:

Ax + By = C

where A, B and C are constants.

y = –2/3x + 7
2/3x + y = 7
(2/3x + y = 7)3
2x + 3y = 21

Therefore the correct answer is the first option.

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What’s 34 percent of 240? A. 81.6 B. 81 C. 90.6 D. 80

What is 5*5+100-99*76

Answers

Answer:

-7399

Step-by-step explanation:

5*5+100-99*76

25 + 100 - 7524

= -7399

Answer:

-7399

Step-by-step explanation:

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The owner of a discount clothing store ordered six belts and eight hats for $140. Aweek later, at the same prices, he bought nine belts and six hats for $132. Find the
price of a belt and a hat.

Answers

Let b = the price of the belt
h = the price of the hat
Equation 1
6b + 8h = 140
Equation 2
9b + 6h = 132
Multiply equation 1 by 1.5
1.5(6b + 8h = 140)
9b +12h = 210
Subtract by equation 2
9b-9b +12h-6h = 210-132
6h = 78
h = 13
Substitute h = 13 in equation 1
6b + 8*13 = 140
6b = 140 - 104
6b = 36
b = 6
The price of the hat is $13.00 each
The price of the belt is $6.00 each

80% of 120 is what value? 20 40 96 108

Answers

To calculate 80% of 120, you simply multiply 120 by 0.80 (which is the decimal representation of 80%).

80% of 120 = 0.80 * 120 = 96.

So, the correct answer is 96.

I hope this helped!

~~~Harsha~~~

Answer:

80/100×120

4/5×120

480/5

Find two whole numbers whose sum is 60 and whose difference is 12

Answers

$\left \{ {\big{x+y=60} \atop \big{x-y=12}} \right. \n--------\nx+x=60+12\n2x=72\ /:2\nx=36\n\nx+y=60\ \ \ \Rightarrow\ \ \ y=60-x\ \ \ \Rightarrow\ \ \ y=60-36=24\n\nAns.\ the\ numbers:\ 36\ \ and\ \ 24$

13/52 in simplest form

Answers

13/52

13/13 = 1
52/13 = 4

1/4 is the most simple form

MattaMillion, the simplest form for 13/52 is 1/4. The greatest common factor between 13 and 52 is 13, so we divide 13 and 52 by 13 to get 1/4.

Let s = 13. What is the value of 3s?

A.
10

B.
16

C.
39

D.
313

Answers

it's c, because
s=13
3s=3*13↪39

Answer:

$\left[\begin{array}{ccc}2&90&10\n4&3&6\n1\left \{ {{y=32\int\limits^8_4 {x} \, dx } \atop {x=50}} \right. &8&6\end{array}\right] \n\n\n\n\n x_(123) (x)/(y) \n\n=(C.39)$