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QveST [7]
2 years ago
9

Find the sum of -3a + 2 and 5a - 3

Mathematics
2 answers:
Anon25 [30]2 years ago
8 0

Answer

-1(3a-2)

Step-by-step explanation:

Effectus [21]2 years ago
7 0

Answer:

Step-by-step explanation:

(-3a + 2 ) + ( 5a - 3)

= -3a + 5a + 2- 3

= 2a + ( -1)

= 2a-1

You might be interested in
Question 6 (5 points)
AleksAgata [21]

Answer:

(26,-2)

Step-by-step explanation:

For any two points on coordinate plane (x1,y1) and ( x2,y2)

coordinate of midpoint is given by (x1+x2)/2 , (y1+y2)/2

Given

(x1,y1) = (-4,-8)

midpoint : (11,-5)

let other point be x2 and y2

therefor by using formula for midpoint coordinate given above we have

midpoint : (11,-5) = (-4+x2)/2 , (-8+y2)/2

Hence point

11 will be equivalent to (-4+x2)/2

11 = (-4+x2)/2

=> 11*2 = -4+x2

=>22 + 4 = x2

=>x2 = 26

similarly

-5 will be equal to (-8+y2)/2

-5 = (-8+y2)/2

=> -5*2 = -8+y2

=> -10 + 8 = y2

=> y2 = -2

Therefore coordinates of other point is  (26,-2).

5 0
3 years ago
What is the sum of the first 7 terms of this geometric sequence? 3, 9, 27, 81,
morpeh [17]
A. 3279 because the first 7 terms are 3,9,27,81,243,729,2187
3 0
2 years ago
A rectangle has a a width of 9 inches the area is 648 inches what is the length of the rectangle
yuradex [85]
The formula for a rectangle is length*width=area. Since we know the area and the width, we plug it in to the formula, we get length*9=648. 
l*9=648 is equivalent to l=648/9. Now we solve <span>l=648/9 and get l=72. SO the width is 72 inches. </span>
5 0
3 years ago
Susan designed a circular pool with a diameter of 25 meters. What is the area of the bottom of the pool? Round to the nearest te
ludmilkaskok [199]
Given:
circular pool with a diameter of 25 meters.

find: area of the bottom of the pool.

It is safe to assume that the diameter of the pool is the same from the top of the pool to the bottom of the pool.

Area of a circle = π r²
where: 
π = 3.14
r = diameter / 2 = 25 meters / 2= 12.5 meters

Area of a circle = 3.14 * (12.5m)²
                        = 3.14 * 156.25 m²
Area of a circle = 490.625 m²

490.625 m² round to the nearest tenth is 490.60 m²

We round down because the number after 6 is 2. Whenever a number to be rounded off is followed by 0,1,2,3,and 4. Then, the number is rounded down.
6 0
3 years ago
A 120-watt light bulb uses about 0.1 kilowatt of electricity per hour. If electricity costs $0.20 per kilowatt hour, how much do
saveliy_v [14]
There is no such thing as a "kilowatt per hour". If that's actually what the question says, then it's a defective question, and you should put it away before it makes you any more confused. A 120 watt light bulb uses exactly 0.12 kilowatt when it's turned on. In one hour, it uses (0.12 kilowatt) x (1 hour) = 0.12 kilowatt-hour of energy. If energy costs $0.20 per kilowatt-hour, then the cost is (0.12) x (0.20) = 2.4 cents. (0.024 dollar)
8 0
3 years ago
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