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dlinn [17]
3 years ago
6

Write the equation in standard form. 3x−9=7y

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0
3x-7y = 9
Standard form is Ax+By = C
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Jasmine purchased 3 bags of hot cheetos and 2 packs of sour patch kids from the vending machine and spent 5.25. Michael also loa
Charra [1.4K]

Answer:

cost of a bag of hot Cheetos = 0.75 and cost of a pack of sour patch kids = 1.5

Step-by-step explanation:

Let the cost of a bag of hot cheetos be c

Let the cost of a pack of sour patch kids be k

Thus, for Jasmine, the equation will be;

3c + 2k = 5.25 - - - - (eq1)

For Michael, the equation will be;

7c + 3k = 9.75 - - - - - (eq2)

We will use method of elimination to solve this.

Multiply (eq 1) by 3 and (eq 2) by 2 to give;

9c + 6k = 15.75 - - (eq4)

14c + 6k = 19.5 - - -(eq5)

Subtract (eq4) from (eq 5) to get;

5c = 19.5 - 15.75

5c = 3.75

c = 3.75/5

c = 0.75

Put 0.75 for c in (eq 4) to get;

9(0.75) + 6k = 15.75

6.75 + 6k = 15.75

6k = 15.75 - 6.75

6k = 9

k = 9/6

k = 1.5

Thus; cost of a bag of hot Cheetos = 0.75 and cost of a pack of sour patch kids = 1.5

7 0
3 years ago
What is the measure of
harina [27]

Answer:

<DAB   = 120

Step-by-step explanation:

7)

<DAB = ?

<DAB + <DCB = 180

so

16x + 8 + 8x + 4 = 180

24x + 12 = 180

24x = 168

x = 7

<DAB  = 16(7) + 8 = 120

6 0
3 years ago
an office supply company sells two types of printers. they charge $95 for one of the printers and $125 for the other. if the com
Ivenika [448]

Answer:

22 of the 95$ ones and 10 of the 125

Step-by-step explanation:

22 times 95 = 2090

10 times 125 = 1250

2090+1250=3340

hope this helped

4 0
2 years ago
A translation occurred that moved 4 units left and 3 units up. If Point A was at ( -3, -2 ), what are the coordinates of A'?
snow_lady [41]

Answer:

I think -7; +1

(sorry if I write this but the answer must be at least 20 characters long)

4 0
2 years ago
The original price of a computer is $489.00. it is discounted 30%. find the selling price ​
Yanka [14]

Answer:

$342.30

Step-by-step explanation:

The original price of the computer is $489. The computer is discounted 30%, which means that 30% of the price is removed from the original price.

30% of 489 is

489 * 0.3 which is $146.7

146.7 is the discounted amount, not the selling price. To find the selling price, subtract how much is discounted ( 146.7) from the original price (489).

489-146.7= 342.3

3 0
2 years ago
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