All categories

2 years ago

3x²+5x-10=0 find the values of a,b and c

Mathematics

1 answer:

vazorg [7]2 years ago

6 0

Answer:

a = 3

b = 5

c = -10

Step-by-step explanation:

ax^2+bx+c

You might be interested in

Solve 1 over 36 = 6x−3. x = −5 x = negative 3 over 2 x = 7 over 2 x = 1

vlabodo [156]

6*(-5)-3 = -33
6*(-3/2)-3 = -12
6*(7/2)-3 = 18
6*(1)-3=3

3 0

3 years ago

Read 2 more answers

How many times does 1 and 7/8 go into at least nine but less than 10?

Gelneren [198K]

Should be four times to get in between 9 and 10

7 0

3 years ago

Read 2 more answers

Determine what type of model best fits the given situation:

lyudmila [28]

Let value intially be = P

Then it is decreased by 20 %.

So 20% of P = $\frac{20}{100} \times P = 0.2P$

So after 1 year value is decreased by 0.2P

so value after 1 year will be = P - 0.2P (as its decreased so we will subtract 0.2P from original value P) = 0.8P-------------------------------------(1)

Similarly for 2nd year, this value 0.8P will again be decreased by 20 %

so 20% of 0.8P = $\frac{20}{100} \times 0.8P = (0.2)(0.8P)$

So after 2 years value is decreased by (0.2)(0.8P)

so value after 2 years will be = 0.8P - 0.2(0.8P)

taking 0.8P common out we get 0.8P(1-0.2)

= 0.8P(0.8)

$=P(0.8)^{2}$ -------------------------(2)

Similarly after 3 years, this value $P(0.8)^{2}$ will again be decreased by 20 %

so 20% of $P(0.8)^{2} \frac{20}{100} \times P(0.8)^{2} = (0.2)P(0.8)^{2}$

So after 3 years value is decreased by $(0.2)P(0.8)^{2}$

so value after 3 years will be = $P(0.8)^{2} - (0.2)P(0.8)^{2}$

taking $P(0.8)^{2}$ common out we get $P(0.8)^{2}(1-0.2)$

$P(0.8)^{2}(0.8)$

$P(0.8)^{3}$ -----------------------(3)

so from (1), (2), (3) we can see the following pattern

value after 1 year is P(0.8) or $P(0.8)^{1}$

value after 2 years is $P(0.8)^{2}$

value after 3 years is $P(0.8)^{3}$

so value after x years will be $P(0.8)^{x}$ ( whatever is the year, that is raised to power on 0.8)

So function is best described by exponential model

$y = P(0.8)^{x}$ where y is the value after x years

so thats the final answer

3 0

3 years ago

8 in. 8 in. 8 in. Find the area of the figure above. [?] in2

RideAnS [48]

Answer:

Step-by-step explanation:

Total area = area of cube + area of triangle

A = 8² + = 64 + 32 = 96 in

5 0

3 years ago

Stan had 15 apples and gave 10 to his sister. If he had 21 apples and wanted to give the same percentage to his sister, how many

DENIUS [597]

10 x

15 100

15x=1000

x= 66.6666

ANSWER IS 14

8 0

2 years ago

3x²+5x-10=0 find the values of a,b and c​

3x²+5x-10=0 find the values of a,b and c