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beks73 [17]
3 years ago
6

Find the values for a and b that would make the equality true. 4(ax^2 -5x+3)=8x^2 +bx+12

Mathematics
2 answers:
tankabanditka [31]3 years ago
5 0

Answer:

a 2 and b -20

Step-by-step explanation:

yawa3891 [41]3 years ago
4 0

Answer:

a = 2 and b = -20

Step-by-step explanation:

4(ax^2 -5x+3)=8x^2 +bx+12 should be multiplied out.  Next, we equate the coefficients of the several powers of x:

4ax² - 20x + 12 = 8x² + bx + 12

Then 4a = 8, so a = 2

and   -20 = b

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Sean takes of a minute longer than Jean to swim 100 meters.
shutvik [7]

Answer:

26

Step-by-step explanation:

3 0
3 years ago
Mae Ling earns a weekly salary of $315 plus a 5.5% commission on sales at a gift shop. How much would she make in a work week if
Alecsey [184]

She would make $573.5 in a work if she sold $4,700 worth of merchandise

Step-by-step explanation:

The given is:

  • Mae Ling earns a weekly salary of $315 plus a 5.5% commission on sales at a gift shop
  • She sold by $4,700

We need to find how much she would make in a work week

∵ Mae Ling earns a weekly salary of $315

∵ She earns a 5.5% commission on sales

∵ She sold by $4,700 in that week

- Add $315 to the product of 5.5% and $4,700

∴ She made = 315 + (5.5% × 4,700)

∵ 5.5% = 5.5 ÷ 100 = 0.055

∴ She made = 315 + (0.055 × 4,700)

∴ She made = 315 + 258.5

∴ She made = 573.5

She would make $573.5 in a work if she sold $4,700 worth of merchandise

Learn more:

You can learn more about word problem in brainly.com/question/3950386

#LearnwithBrainly

8 0
3 years ago
which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 2x – 1 into the quadratic formula below
irinina [24]

0 = 4x^2+2x- 1

Quadratic formula is

x = \frac{-b+-\sqrt{b^2-4ac}}{2a}

'a' is the coefficient of x^2 = 4

'b' is the coefficient of x = 2

'c' is the constant = -1

Now we plug in all the values in quadratic formula

x = \frac{-b+-\sqrt{b^2-4ac}}{2a}

x = \frac{-2+-\sqrt{2^2-4(4)(-1)}}{2(4)}

x = \frac{-2+-\sqrt{18}}{8}

The above one is the substitution of values of a,b,c in quadratic formula.

5 0
3 years ago
Read 2 more answers
What is the surface area of the rectangular prism?
Elis [28]

Answer:

358 in²

Step-by-step explanation:

Length = 7

Width = 5

Height = 12

Thank my friend Sabrina for telling me the length, width, and height lol.

Then you plug the values in:

2(7x5) + 2(7x12) + 2(5x12)=358

6 0
3 years ago
Read 2 more answers
5/6 plus 3/4 plus 2/3 <br> Equals?
Ann [662]

Answer:

9/4

Step-by-step explanation:

4 0
3 years ago
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