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S_A_V [24]
3 years ago
13

Help me plz I neeed it for a quiz

Mathematics
1 answer:
iris [78.8K]3 years ago
5 0
40 degrees can I get crown?
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Solve the system of equations. y=23x–19 x2–y= – 6x–23 Write the coordinates as integers, simplified proper or improper fractions
forsale [732]

Answer:

(3, 50) and (14,303)

Step-by-step explanation:

Given the system of equations;

y=23x–19 ....1

x²–y= – 6x–23 ...2

Substitute 1 into 2;

x²–(23x-19)= – 6x–23

x²–23x+19= – 6x–23 .

x²-23x + 6x + 19 + 23  = 0

x² - 17x + 42 = 0

Factorize;

x² - 14x - 3x + 42 = 0

x(x-14)-3(x-14) = 0

(x-3)(x-14) = 0

x = 3 and 14

If x = 3

y = 23(3) - 19

y = 69-19

y = 50

If x = 14

y = 23(14) - 19

y = 322-19

y = 303

Hence the coordinate solutions are (3, 50) and (14,303)

8 0
3 years ago
What is k-15=-8?<br><br><br> I need help with this one<br> Btw it is asking what k equals.
LuckyWell [14K]

Answer:

k=7

Step-by-step explanation:

Add 15 to both sides, -8+15=7

So, K=7

4 0
3 years ago
A researcher wants to know if eating a mint affects whether people can distinguish between two popular orange juice brands. To c
slamgirl [31]

Answer:

D

that both groups are roughly equivalent with regards to demographics and juice preferences.

Step-by-step explanation:

3 0
2 years ago
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In multiplication if one term is negative and one term is positive the results will always be
Rina8888 [55]
The results will always be negative.
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3 years ago
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A bacteria population is growing exponentially with a growth factor of \small \frac{1}{6} each hour. By what growth factor does
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Answer:

1/6

Step-by-step explanation:

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3 years ago
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