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avanturin [10]
3 years ago
15

Simplify 19a - 28a² + 5

Mathematics
1 answer:
Reptile [31]3 years ago
8 0

Answer:

-28a² +19a+5

Step-by-step explanation:

You might be interested in
What is 5 1/2 minus 3 1/4
Brut [27]
5 1/2 - 3 1/4

11/2 - 13/4

22/4 - 13/4 = 9/4

your answer is 2 1/4

hope this helps
7 0
4 years ago
Read 2 more answers
Please solve it .........​
VLD [36.1K]

Answer:

2

Step-by-step explanation:

We must first solve the first equation to solve the second question. If we make up an answer for each variable in the first equation, it will make it easier to solve the next. Now lets say that each of the fractions will be equal to 1/3. We can then find out that x=2, y=4, and z=4012. We then have to factor the second equation's fractions. we can factor out x, y, and z out of each fraction respectively. The equations become the same as the first set, but x, y, and z instead of 1, 2 and 2006. because we know that x=2, y=4, and z=4012, we can simplify each fraction to become 2/3, and add these fractions up to equal 2.

4 0
3 years ago
Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original
Ivanshal [37]

Answer:

  • 1.25 hours or 1 hour and 15 minutes

Step-by-step explanation:

<em>Question</em>

  • <em>Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original  height every hour. </em>
  • <em>Please complete the following sentence by writing the number in the blank.   Until the candle has been burning for at least _______ hours, the height of Jennifer's candle will be more than 7 inches.</em>

<u>Candle looses 10% of 8 inches, it equals:</u>

  • 8*0.1 = 0.8 inches an hour

<u>Let x be required time, then:</u>

  • 8 - 0.8x > 7
  • 0.8x <  8 - 7
  • 0.8x  < 1
  • x  < 1/0.8
  • x  <  1.25
  • or 1 hour 15 minutes
7 0
3 years ago
9x^2+6x+5=0, solve using the quadratic formula
AleksAgata [21]

Step by step explanation:

9x^{2}+6x+5=0

Uses the "a", "b", and "c" from "ax^{2} + bx + c", where "a", "b", and "c" are numbers

So in this case:

a would be 9

b would be 6

c would be 5

Then plug in from there..

Another way you can do it is using the square method.

8 0
4 years ago
Use the formula Area = (side)2 to find the area of the square.
ki77a [65]

Answer:

1. 5² is 25 yards

2. 7² is 49m

3. 8² is 64cm

4.draw a square, make one side 6 feet then do 6² which is 36feet

5. do the same thing then write 10 inches on one side and 10² is 100 inches.

6. 7x3= 21 ft

7. 5x4= 20 in.

8. 2x8= 16 yd

Step-by-step explanation:

common sense

7 0
2 years ago
Read 2 more answers
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