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mestny [16]
2 years ago
12

2p Determine the value of a such that the system of equations below would have an infinite number of solutions?

Mathematics
1 answer:
Alona [7]2 years ago
6 0


2p Determine the value of a such that the system of equations below would have an infinite number of solutions?
18x + 12y = 36
ax – 8y =- 24

Answer: a=-12
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Please help explain how to solve problem 16?
Anarel [89]
Here is the problem.....√(15x + 10) = 2x+3

to remove the square root, we do the opposite which is to square everything.

(√(15x + 10))² = (2x + 3)²      (the square negates the square root)
15x + 10 = (2x +3)(2x + 3)    (use the distributive property to continue)
15x + 10 = 4x² + 6x + 6x + 9  (combine like terms)
15x + 10 = 4x² + 12x + 9      (subtract 15x and 10 from each side)
-15x - 10          -15x - 10
0 = 4x² - 3x - 1                      (factor completely)
(x - 1) (4x + 1)                    (set each to equal 0)

x - 1 = 0                4x + 1 = 0
x = 1                      4x = -1
                               x = -1/4

place both into the equation to check for reasonableness...we see the negative number is not reasonable, but the x value of 1 is a solution.

answer is 1
4 0
2 years ago
For every 12 slices of pizza sold at Ping's Pizza Shop,
kaheart [24]

Answer:

3:5 Is the ratio because there are five pieces of cheese.

Step-by-step explanation:

If there are 12 pieces, then you can add 4 and 3 together and get 7 and then you can take 7 from 12 and get 5 which is how many cheese pieces there are. Now you know that there are 3 slices of pepperoni and 5 pieces of cheese. Therefore the ratio is 3:5.

6 0
3 years ago
Write a number that has a zero in the tens place. Draw a quick picture for your number
natali 33 [55]
400 hope that helped
4 0
3 years ago
Read 2 more answers
How do I write 208,000,478 in expanded form
Rama09 [41]

200,000,000

8,000,000

478

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4 0
3 years ago
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What are all the values of x that make the quadratic A<br> equation below true?<br> x² – 16=0
Rudiy27
X^2 = 16
x = 4
x = -4
good luck :)
8 0
2 years ago
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