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miskamm [114]
3 years ago
15

Workout the value of 5(x-y)

Mathematics
1 answer:
ANTONII [103]3 years ago
6 0

Answer:

5x-5y

Step-by-step explanation:

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Y=-x^2+20x-64 what is the max height
Inessa [10]

Answer:

36

Step-by-step explanation:

The maximum height is the y-coordinate of the vertex

given a quadratic in standard form : ax² + bx + c : a ≠ 0

then the x-coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

y = - x² + 20x - 64 is in standard form

with a = - 1, b = 20 and c = - 64, hence

x_{vertex} = - \frac{20}{-2} = 10

substitute x = 10 into the equation for y

y = - (10)² + 20(10) - 64 = 36 ← max height


8 0
3 years ago
Solve for the variable: x + 9 > -4
Marina CMI [18]
Hi \\  \\ x+9\ \textgreater \ -4 \\  \\ x\ \textgreater \ -4-9 \\  \\ \boxed{x\ \textgreater \ -13} \\  \\ S=\{x\in~\mathbb{R} |x\ \textgreater \ -13\} \\  \\  \\
3 0
3 years ago
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4.) Which of the following correctly describes the line y = 5?
AnnZ [28]
1. It is parallel to the x-axis.
6 0
2 years ago
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Help ASAP please!!!
Flura [38]
D all the above. I had this question also
7 0
3 years ago
What is the value of the expression 22 + 42 ÷ 22?<br><br> 3<br> 6<br> 8<br> 16
insens350 [35]

Answer:

Step-by-step explanation:

22 + 42 divided by 22

we always to division and multiplication before adding or subtracting, so

(42/22) + 22 = a very lonnggg number = 23.9090909091?????

are you sure the equation is correct?

i can help you

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4 0
3 years ago
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