3 years ago

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Mathematics

1 answer:

Anastasy [175]3 years ago

4 0

Answer:

Step-by-step explanation:

5 divided by 1/4= 20

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1. The value of k for which equation 9x2 + 8xk+8 = 0 has equal roots is:

Nesterboy [21]

Answer:

Option C

+ or - 3

Step-by-step explanation:

A quadratic equation will have equal roots if its Discriminant is equal to zero.

the discriminant in this case is $b^{2}- 4 ac$

considering the equation,

$9x^{2} + 8xk+8 = 0$

a = 9, b= 8k, c=8

Replacing the variables in the original equation with their respective values, we will have:

$8k^{2}- 4 \times 9 \times 8=0\\64k^{2}=288\\k=\sqrt{288/64} =\sqrt{9/2}$

Note: The values of k are meant to be + or -2.12 as seen from the workings

However, these are not in the options given. the closest choice to it

is + or - 3

8 0

4 years ago

How much does this fish weigh? How much does this fish weigh if it's tail weighs 4kg , it's head weighs as much as it's tail and

denis23 [38]

Body Weight: w=(t+0.5w)+t
Tail Weight: t=4
Head Weight: t+0.5w

w=t+0.5w+t

But t=4,

w=4+0.5w+4

w-0.5w=8

0.5w=8

Therefore: w=16.

8 0

3 years ago

Given three equations :

tino4ka555 [31]

The answer is D
Equation 1 and 2 have equal slopes

6 0

3 years ago

Sue travels 876 miles roundtrip to visit her parents. What is the total distance in miles she would fly for 12 visits to her par

alina1380 [7]

Answer:

2 miles

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Does W(t)=0 have a solution?

AlladinOne [14]

No it does not have one

8 0

3 years ago

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