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djyliett [7]
3 years ago
6

10. Solve the system algebraically for x. y = 4.x - 3x - 5 y = 6x + 4

Mathematics
1 answer:
Lunna [17]3 years ago
7 0

Answer:

x= -9/5, y= 34/5

Step-by-step explanation:

:) hope you get it right!~

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N
ZanzabumX [31]

Answer:

x = 4 is the solution

Step-by-step explanation:

given  = x ( square both sides )

x + 12 = x² ( rearrange into standard form )

x² - x - 12 = 0 ← in standard form

(x - 4 )(x + 3 ) = 0 ← in factored form

equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

x + 3 = 0 ⇒ x = - 3

Insert these values into the original equation, and if both sides are equal, and those are the solutions.

x = 4 :  =  = 4 = x ← correct

x = - 3 :  =  = 3 ≠ - 3 ← false

the answer is x = 4

7 0
2 years ago
Which type of parent function is f(x) = x2? O A. Square root O B. Linear O C. Cube root O D. Quadratic​
salantis [7]

Answer: D. quadratic

Step-by-step explanation:

7 0
2 years ago
The heights of women aged 20 to 29 are approximately normal with mean 64 inches and standard deviation 2.7 inches. men the same
Artyom0805 [142]
<span>To find the z-scores, find the difference in the number of inches for each value from the mean and then divide that by the standard deviation. For women at 72 inches (6'), this would be (72-64) / 2.7, or a z-score of +2.963. For a male at 72 inches, this would be (72-69.3)/2.8, or +0.964. This shows that the woman at 6 feet tall is more rare in the distribution than a man at 6 feet tall.</span>
5 0
2 years ago
What is 120/180 in simplest form
dlinn [17]
You can find the simplest form of 120/180 by rounding down the numbers. you can take the zeros away and your left with 12/18. you can make it even smaller by using the 6 time tables. 12 and 18 are both in the 6 time tables. 2×6=12 and 3×6=18. The answer is 2/3.

Hope I helped :D
6 0
2 years ago
Solve 8(12−14x)≥82. Show your steps.
saveliy_v [14]

Answer:

x ≤ 1/8

Step-by-step explanation:

Expand the parentheses

Simplify the arithmetic

Solve by distributing

7 0
2 years ago
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