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3 years ago

I need help on this now plz

Mathematics

2 answers:

NemiM [27]3 years ago

5 0

Answer:

x= -7

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable.

drek231 [11]3 years ago

3 0

Answer:

-7

Step-by-step explanation:

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Answer ASAP, Find the quadratic equations whose roots are ½ and -5/2

ArbitrLikvidat [17]

Answer:

4x^2+8x-5

Step-by-step explanation:

You work backwards to get (2x-1) which gets you the root 1/2 and (2x+5) which gets you the root -5/2 after this you foil what you have so (2x-1) times (2x+5). You do 2x times 2x which gives you 4x^2 2x times 5 which gives you 10x -1 times 2x which gives -2x and lastly -1 times 5 which gives you -5 now you combine like terms and get your final answer of 4x^2+8x-5

3 0

3 years ago

On the number line about RT = 1/6. Point s ( not shown) is located between point r and point t. Which value is below is a possib

mojhsa [17]

Answer: you do the one

Step-by-step explanation:

Yeah

7 0

3 years ago

Situation:

Arturiano [62]

Answer:

t = 6162 years

Step-by-step explanation:

Apparently you are asked to use the constant k = 0.0001 instead of the most common 0.00012. We'll answer the problem using such number you typed, but make sure that there is no omission in your typing.

The equation to use is that for carbon decay:

$N(t)=N_0\,e^{-0.0001\,\,t}$

If the skull contains 54% of its original amount of C14, then that means that :

$N(t)=0.54 \,\,N_0$

we use this to solve for the time (t) in our equation:

$0.54\,\,N_0=N_0\,e^{-0.0001\,\,t}\\\frac{0.54\,\,N_0}{N_0}=e^{-0.0001\,\,t}\\0.54=e^{-0.0001\,\,t}\\ln(0.54)=-0.0001\,\,t\\t=\frac{ln(0.54)}{-0.0001} \\t=6161.86\,\,years$

which rounded to the nearest year as requested gives :

t = 6162 years

8 0

3 years ago

What is 777778978734*79980324768762378945569723

Zielflug [23.3K]

? do you have a photo of your work

8 0

3 years ago

How to do this question plz

Ksivusya [100]

Answer:

86.6 feet (3 s.f.)

Step-by-step explanation:

Please see attached picture.

tan60°= height of tower/ 50

Height of tower

= 50tan60°

= 50√3

= 86.6 ft (3 s.f.)

tanѲ= opp/ adj

6 0

3 years ago