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NeX [460]
2 years ago
6

What is the length of PQ , rounded to the nearest tenth.

Mathematics
1 answer:
Assoli18 [71]2 years ago
7 0

Answer:

10.8 units

Step-by-step explanation:

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Someone please help, 100 points.
Over [174]
Part 1
Let:
y be the total cost
x be the number of tickets
a be fair admission

Since the fair charges $1.25 per ticket, the equation of the line would look like:

y = 1.25x + a

Since Johnny spent $43.75 and bought 25 tickets, we find a by replacing y with 43.75 and x with 25:

43.75 = 1.25×25 + a

Now solve for a

43.75 = 31.25 + a
43.75 - 31.25 = a
a = 12.50

Going back to the first equation:

y = 1.25x + 12.50


Part 2:
a) Let (9,8) be (x1,y1) and (4,-12) be (x2,y2)
The formula for slope is:
m =  \frac{y2 - y1}{x2 - x1}  \\ m =  \frac{ - 12 - 8}{4 - 9}  \\ m =  \frac{ - 20}{ - 5}  \\ m = 4
b) For the point-slope equation, I'll use (9,8)
Using the formula:
y - y1 = m(x - x1) \\ y - 8 = 4(x - 9)
c) For the slope-intercept form, we solve for y in the point-slope formula:
y - 8 = 4(x - 9) \\ y = 4x - 36 + 8 \\ y = 4x - 28
5 0
2 years ago
Answer two questions about systems A and B
Lunna [17]

Step-by-step explanation:

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Can you send a picture to see if I can help

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2 years ago
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What is the measure of the missing angle?
Lapatulllka [165]

Answer:

53 degrees

Step-by-step explanation:

Add 90 and 37= 127

Subtract 180-127= 53

7 0
2 years ago
What does a star mean after a number
Triss [41]
A star is written to show multiplication. It is a replacement for a dot or a x which is what you probably learned to be the "times" sign. In upper level maths, the "x" is replaced with a " * " to make it more legible and to avoid confusion with the variable "x".
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Carry out the calculation: (1.43) + (3.11) × (1.5) what is the answer rounded to the correct number of significant figures?
SashulF [63]
<span>Begin with 3.11 x 1.5, which equals 4.665. Then add 1.43. The answer is thus 6.095.</span>
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3 years ago
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