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andriy [413]
4 years ago
6

A student was asked to evaluate an expression. The student's work is shown. Describe any errors and find the correct value of th

e expression. Explain your reasoning​
Mathematics
1 answer:
masya89 [10]4 years ago
8 0

Answer:

George Washington was the first president of the United States of America

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Help me with this please
ss7ja [257]
When points are being reflected over the x axis you simply multiply the y value by -1. This makes the last option the correct one.
6 0
3 years ago
The sum of 2 numbers is 100<br> Th difference of those 2 numbers is 6 what numbers am I?
Sloan [31]

Good evening ,

Answer:

<h2>53 and 47.</h2>

Step-by-step explanation:

let x and y represents the two uncknown numbers

then

x+y=100

x-y=6

then

2x=100+6=106

2y=100-6=94

then

x=106/2=53

y=94/2=47.

:)

6 0
4 years ago
(09.02 HC)
zlopas [31]

Answer:

Vertex = (12,64)

The meaning of this pair of values is that the y-coordinate is the maximum profit obtainable, and the x-coordinate is how many cups sold will make the maximum profit.

X-intercepts: 4 and 20

The meaning of theses values is that these amounts of cups sold (4 and 20) will make zero profit.

Step-by-step explanation:

To find the vertex we can use the formula for the x-coordinate of the vertex:

x_v = -b/2a

Where a and b are coefficients of the quadratic equation (in this case, a = -1 and b = 24)

So we have that:

x_v = -24 / (-2) = 12

The vertex is 12 cups of coffee. Now we apply this value to find the y-coordinate of the vertex:

f(x) = -12^2 + 24*12 - 80 = 64

So the vertex is (12,64). The meaning of this pair of values is that the y-coordinate is the maximum profit obtainable, and the x-coordinate is how many cups sold will make the maximum profit.

To find the x-intercepts, we need to make f(x) = 0 and find the values of x:

-x2 + 24x - 80 = 0

Delta = 24^2 - 80*4 = 256

sqrt(Delta) = 16

x1 = (-24 + 16)/(-2) = 4

x2 = (-24 - 16)/(-2) = 20

The x-intercepts are 4 and 20. The meaning of theses values is that these amounts of cups sold (4 and 20) will make zero profit.

5 0
3 years ago
Angle a​ and​ ​angle b​ ​are complementary angles. The measure of ∠a is 42°.
olga nikolaevna [1]
I believe your answer would be B
7 0
4 years ago
Read 2 more answers
NEED HELP ASAP!!!!!!!!!
ICE Princess25 [194]
They answr is cube because there is many ace fences
8 0
3 years ago
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