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3 years ago

2x^2+6x-8 and x+3 in standard form

Mathematics

1 answer:

Svet_ta [14]3 years ago

4 0

Answer:

x 2 + 6 x + 8 = 3

Step-by-step explanation:

To write an equation in standard form, move each term to the left side of the equation and simplify.

a x 2 + b x + c = 0

Move 3 to the left side of the equation by subtracting it from both sides.

x 2 + 6 x + 8 − 3 = 0

Subtract 3 from 8 . x 2 + 6 x + 5 = 0

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A large city newspaper periodically reports the mean cost of dinner for two people at restaurants in the city. The newspaper sta

inysia [295]

Answer: C) 133

Step-by-step explanation:

The formula to find the sample size is given by :-

$n=(\dfrac{z^*\cdot\sigma}{E})^2$

, where z* = Critical z-value

$\sigma$ = Population standard deviation for prior study.

E= Margin of error.

As per given , we have

$\sigma=$35$

E= 5

The critical z-value for 90% confidence level is 1.645.

Substitute al;l the value sin the above formula , we get

$n=(\dfrac{1.645\times 35}{5})^2$

$n=(\dfrac{57.575}{5})^2$

$n=(11.515)^2$

$n=132.595225\approx133$

Hence, the minimum sample size needed is 133.

Thus , the correct answer is : C) 133

6 0

3 years ago

There are 52 colas and 26 lemon-lime sodas in the cooler. What is the ratio of colas to lemon-lime sodas?

sergejj [24]

Hi there.

If there are 26 lemon-lime sodas and 52 colas, then that means our ratio is going to be 52:26; however, this is not simplified as both of these are even numbers. To simplify, divide both of these numbers by 26.

26 / 26 = 1
52 / 26 = 2

Our new and simplified ratio of colas to lemon-lime sodas is going to be
2:1.

I hope this helps!

5 0

2 years ago

Read 2 more answers

What is the lcm of 3 and 4?

Tcecarenko [31]

The LCM of 3 and 4 is 12.

I hope this helps and have a good night! :D

6 0

2 years ago

Read 2 more answers

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MAXImum [283]

C May be the answer sorry if it is wrong.