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katrin [286]
2 years ago
5

The sum of 9 and a number

Mathematics
2 answers:
Pie2 years ago
8 0
The expression is 9+x
Yuri [45]2 years ago
3 0

Answer:

E+ 9

Step-by-step explanation:

Let E represent a number.

The sum of nine and the number is then E+9 as "sum" denotes addition.

Therefore the representation would be E+9

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Will mark brainliest IF you explain and solve
TEA [102]

Answer:

A) y = (x + 3)² + 4

B) y = (x - 3)² + 2

C) y = (x - 1)² - 5

Step-by-step explanation:

2 units UP means that the vertex will be shifted from (-3 , 2) to (-3, (2 + 2) or (-3, 4)

As the y = (x + 3)² will still be zero at x = -3, we just need to change the "+ 2" to

"+ 4" to shift the curve upward by 2

y = (x + 3)² + 4

When we want to shift the curve to the right, we want the vertex to move from (-3, 2) to (3, 2)

This means that the term in parenthesis must be zero with our desired x value

(3 + C)² = 0

3 + C = 0

C = -3

y = (x - 3)² + 2

4 units right and 7 units down mean that the vertex is desired at (1, -5)

(1 + C)² = 0

C = -1

y =  (x - 1)² - 5

4 0
2 years ago
X2 - 5x + 4<br> What is equivalent to this expression?
drek231 [11]

Answer

(x-1) (x-4)

Step-by-step explanation:

I did this not long ago in class so that's the answer

6 0
2 years ago
Read 2 more answers
The price for 32 inch TV cost $625 and the clearance sale is 20% off. What is the new selling price?
Elan Coil [88]
The answer is 125. Just for you to understand all you have to do is 20 *____ =625 in this case 20*125=625 :)
8 0
3 years ago
Read 2 more answers
Correct answer gets brainliest
nadya68 [22]

Answer:

I think the answer is D

Step-by-step explanation:

7 0
3 years ago
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A track and field playing area is in the shape of a rectangle with semicircles at each end . The perimeter of the track is to be
MAVERICK [17]
We can let the radius of the semi circles be r and x can be the length of the rectangle.
The perimeter will be Perimeter = 2x + 2pr = 1200
The area of the rectangle is Area = x(2r)
 Once we solve the perimeter equation, you get x = 600.
Put this into the area equation and you get Area = (600 - pr)(2r)
The maximum then gives r = 95. 493 and area 57, 295.8
Dimensions

Height is twice the radius or 190.986. Find base use equation x = 600 - p(95.493) = 300.

This means dimensions are 300 by 190.986 
5 0
3 years ago
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