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SOVA2 [1]
2 years ago
11

Use the discriminant to determine how many and what kind of solutions the quadratic equation 3x^2 + 4x = - 5 has.

Mathematics
1 answer:
leonid [27]2 years ago
7 0

Answer:

C.

Step-by-step explanation:

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Which of the following statements is correct? Population parameters are used to make inferences about sample statistics. Populat
ikadub [295]

Answer: Sample statistics are used to make inferences about population parameters.


Step-by-step explanation:

A number which describes a population is called a parameter, such as a proportion or percentage.

A statistic is a number which may be calculated from the data observed in a random sample without demanding the use of any unknown parameters.

The mean and variance of a population are population parameters.

Thus, fourth statement is the right answer "Sample statistics are used to make inferences about population parameters."

6 0
3 years ago
Read 2 more answers
a stone is thrown downward with an intitial velocity of 29.5 m/sec will travel a distance of a meters, where s(t) = 4.9t^2 + 29.
Alenkinab [10]

Answer:

t = 9 s

Step-by-step explanation:

A stone is thrown downward with an intitial velocity of 29.5 m/sec will travel a distance of a meters, where

s(t) = -4.9t^2 + 29.4+132.3

We need to find when the stone will hit the ground. It means when s(t) = 0. So,

-4.9t^2 + 29.4t+132.3=0\\\\t=-3\ and\ t=9

So, the stone will take 9 seconds to hit the ground. Hence, this is the required solution.

5 0
2 years ago
Two positive, consecutive, odd integers have a product of 143. set up an equation to then solve for the integers.
mixer [17]

Answer:

Step-by-step explanation:

Let (2n-1) and (2n+1) be the consecutive, odd numbers.

(2n-1)(2n+1) = 143

4n² - 1 = 143

4n² = 144

n² = 36

n = 6

2n-1 = 11

2n+1 = 13

The numbers are 11 and 13.

6 0
2 years ago
PLEASE HELP,I AM BEING TIMED!!
Yuri [45]

Answer:

<h2><em>angle</em><em> </em><em>of</em><em> </em><em>1</em><em> </em><em>will</em><em> </em><em>be</em><em> </em><em>6</em><em>0</em><em>°</em></h2>

Step-by-step explanation:

<h2 /><h2>we know vertical opposite angle are equall so </h2><h2><em>angle</em><em> </em><em>1</em><em> </em><em>=</em><em> </em><em>6</em><em>0</em><em>°</em></h2>
7 0
3 years ago
PLEASE HELP ME OUT <br><br> Convert the following<br><br> 35 mL = _____dL<br><br> 950 g = _____ kg
MArishka [77]

Answer:

950 g = 0.95 kg

35 mL = 0.35 dL

hope this helps

6 0
2 years ago
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