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WINSTONCH [101]
2 years ago
5

Evaluate the expression for x = - 5 and y = 7 2x+3y-11

Mathematics
1 answer:
jolli1 [7]2 years ago
4 0

Answer:2(-5)+3(7)-11=-10+21=11-11=0

Step-by-step explanation:

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Write a situation for the following inequality: x>25
Marina CMI [18]
X represents the number of books you have. If you say to a friend "I have more than 25 books" then you can write "x > 25" which says "x is greater than 25"

Something like x = 50 will make x > 25 since 50 is larger than 25. In contrast, a value like x = 20 is going to make x > 25 false because 20 > 25 is false (20 is smaller than 25, not larger)
8 0
3 years ago
The cost y (in dollars) to rent a camping tent is proportional to the number x of days that the tent is rented. It costs $56 to
sleet_krkn [62]
This is the concept of algebra, we solve the question as follows:
The cost of renting a camping tent is y
The number of days is x
cost is proportional to number of days, thus:
yαx
y=kx
where k is the constant of proportionality.
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7 0
3 years ago
This should be easy but plz explain in the best way thank u
pentagon [3]

Answer:

The answer is 1.

Step-by-step explanation:

9^15 = 205891132094649

205891132094649(1/205891132094649 )

Cancel the common factor of "205891132094649 "

You are left with 1.

3 0
3 years ago
Describe and correct the error a student made in finding the midpoint cd with c(-4,5) and d(-1,-4).
Gnesinka [82]

Answer:

Step-by-step explanation:

The formula for finding the midpoint of two coordinates is expressed as;

M(X,Y) = (\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2})

Given the coordinates c(-4,5) and d(-1,-4), x1 = -4, y1 = 5, x2 = -1 and y2 = -4.

For the X coordinate of the midpoint

X = x1+x2/2

X = -4+(-1)/2

X = -4-1/2

X = -5/2

X = -2.5

Similarly for Y:

Y = y1+y2/2

Y = 5+(-4)/2

Y = 5-4/2

Y = 1/2

Y = 0.5

Hence the midpoint coordinate of C(-4,5) and D (-1,-4) is (-2.5, 0.5)

5 0
3 years ago
the bike is on sale for $130. if the original price of the bike $200, what is the percent discount ?
STALIN [3.7K]
Part percent
—— = ————. I use that method a lot and it helped me. ANSWER:65%
Whole 100
8 0
3 years ago
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