Part 2 of this hard test

Mathematics

2 answers:

kvasek [131]2 years ago

6 0

The 6th grade one is b and the teacher one is A

xeze [42]2 years ago

4 0

The 6th grade is b and the teacher is a

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One of the roots of the equation 3x^2+7x−q=0 is −5. Find the other root and q.

statuscvo [17]

Answer: The answer is $\textup{The other root is }\dfrac{8}{3}~\textup{and}q=40.Step-by-step explanation: The given quadratic equation is[tex]3x^2+7x-q=0\\\\\Rightarrow x^2-\dfrac{7}{3}x-\dfrac{q}{3}=0.$

Also given that -5 is one of the roots, we are to find the other root and the value of 'q'.

Let the other root of the equation be 'p'. So, we have

$p-5=-\dfrac{7}{3}\\\\\\\Rightarrow p=5-\dfrac{7}{3}\\\\\\\Rightarrow p=\dfrac{8}{3},$

and

$p\times(-5)=-\dfrac{q}{3}\\\\\\\Rightarrow \dfrac{8}{3}\times 5=\dfrac{q}{3}\\\\\\\Rightarrow q=40.$

Thus, the other root is $\dfrac{8}{3}$ and the value of 'q' is 40.

3 0

3 years ago

Help please, will give lots of points!

Troyanec [42]

Step-by-step explanation:

roots as exponents are fractions

if there is no root number next to the radical sign its assumed that its 1/2

3√2 is 2^(1/3)

√3 is 3^(1/2)

4√3 is 3^(1/4)

5√2 is 2^(1/5)

8 0

2 years ago

In calculating the present value of $1,000 to be received 5 years from today, the discount factor has been calculated to be .700

Trava [24]

To calculate the present value we shall proceed as follows:
from the present value table, the percentage corresponding to discount factor of 0.7008 in 5 years is 7%
therefore using the formula:
FV=PV(1+r/100)^n
where:
FV=$1000
PV=?
r=7%

hence:
1000=PV(1+7/100)^5
PV=1000/(1+7/100)^5
PV=712.986

6 0

3 years ago

Nadia owes her friend $8 for a movie ticket, $3 for popcorn, and $2 for a soda. Which of the following represents how much money

Novay_Z [31]

8+2+3= 13. So Nadia owes her friend $13

8 0

3 years ago

Read 2 more answers

Please give question for the answer.

fenix001 [56]

Answer:

$f(x)=\sqrt[3]{x} \\a=5$