1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
eduard
2 years ago
10

HELP find the a,b,c of this table​

Mathematics
1 answer:
fenix001 [56]2 years ago
6 0

Answer:

<em>a = b = 1 , c = - 8</em>

Step-by-step explanation:

ax² + bx + c = y

( - 5 )² a - 5b + c = 12

<em>c = - 8</em>

3² a + 3b + c = 4

25a - 5b - 8 = 12 ⇔ 25a - 5b = 20 ⇔ 5a - b = 4 ........ <em>(1)</em>

9a + 3b - 8 = 4 ⇔ 9a + 3b = 12 ⇔ 3a + b = 4 .......... <em>(2)</em>

<em>(1)</em> + <em>(2)</em>

8a = 8 ; <em>a = 1</em>

<em>b = 1</em>

<em>y = x² + x - 8</em>

You might be interested in
B) The cost price of an article was Rs 4000.Find the marked price of the
sweet [91]

Answer:

Market price = Rs. 6,000

Step-by-step explanation:

Given:

Cost price = R.s 4,000

Profit after discount = 20%

Discount = 20%

Find:

Market price

Computation:

Sales price = Cost price[1+Profit after discount]

Sales price = 4,000[1+20%]

Sales price = 4,800

Market price = Sales price[100/(100 - Discount)]

Market price = 4,800[100/(100 - 20%)]

Market price = Rs. 6,000

7 0
3 years ago
Leslie started last week with $1200 in her checking account. During the week, she wrote the checks below. Trans typ./ Check no.
Greeley [361]

Answer:d

Step-by-step explanation:

6 0
3 years ago
Solve the following system of equations by linear combination: 5x 2y = 14 y = x – 7
natta225 [31]
I would use subsitution
y=x-7
sub x-7 for every x
5x+2(x-7)=14
5x+2x-14=14
add 14 to both sides
7x=28
divide both sides by 7
x=4
sub
y=x-7
y=4-7
y=-3

x=4
y=-3
(4,-3)
4 0
3 years ago
There are 16 types of flowers used to decorate for a party. Twelve of the flowers types last an average of 4 days before they wi
KATRIN_1 [288]
If 12 types only last 4 days, and the rest last an average of 6, then the average amount of days that ALL the flowers wilt would be 5. To find the average, you add 6 and 4 to get 10, and since there is only 2 number we added togehter to get 10, you would divide 10 by 2 to get 5!
5 0
3 years ago
Read 2 more answers
What 2 numbers make 30.6
soldi70 [24.7K]

i could give you many

30 + 0.6

15.3 + 15.3

20 + 10.6

that's just 3 but if you need anymore let me know

3 0
3 years ago
Read 2 more answers
Other questions:
  • Carlos has 4/5 of a tank of fuel In his car. he uses 1/10 of a tank per day. How many days will his fuel last?
    10·1 answer
  • Which of the following rational functions is graphed below?
    7·1 answer
  • Definition of Base Angles?
    5·1 answer
  • Can someone please help me with this?
    13·2 answers
  • Solve for n: n/3 &gt; 66 2/3
    8·1 answer
  • Plsss help I will mark brainlist plsss help fast
    14·1 answer
  • Convert the following fractions to equivalent fractions?
    10·1 answer
  • End points of the same line segment are called
    14·1 answer
  • -28 + 2x = -18<br> x=? Solve for x
    10·2 answers
  • find the measure of angle A using your correct answer from questions 1 2 or 3 A 45 B 36.9 C 53.1 D 35.2​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!