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Ugo [173]
3 years ago
12

Select all of the following that are quadratic equations.

Mathematics
2 answers:
AfilCa [17]3 years ago
7 0

Answer:

2x^2+ 12 x = 0

3.6x^2 + 8 = 0

Step-by-step explanation:

Quadratic equations are those with the variable to the power of 2

2x^2+ 12 x = 0

3.6x^2 + 8 = 0

None of the other equations have the variable raised to the power of 2

KonstantinChe [14]3 years ago
3 0

Answer:

2 x2+ 12 x = 0

Step-by-step explanation:

I think this is right but I am not sure :(

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Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increa
murzikaleks [220]

The hypothesis is given as

H0:  μd< 0

H1: μd > 0

<h3>How to solve for the hypothesis.</h3>

The null hypothesis is given as

H0:  μd< 0

<h3>The alternative hypothesis is given as </h3>

H1: μd > 0

SWe have to find the value of s

we would use this formula s = sqrt [ (Σ(di - d)^2 / (n - 1) ]

This gives us  3.454

Next we have to determine the standard error

s / √(n)

3.454/2.8284

= 1.22

Degree of freedom = 8 - 1

= 7

t = (x1 - x2) - D / S.E

=  1.025

Find t critical at 0.10

= 1.895

P-value = 0.1697

d. Given that p value is greater thatn 0.1 we fail to reject the null hypothesis.

Read more on statistics here:

brainly.com/question/4219149

#SPJ1

7 0
2 years ago
One canned juice drink is 25% orange juice; another is 10% orange juice. How many liters of each should be mixed together in ord
Vikki [24]
Let's say we use "x" of the 25% OJ... ok... well, how much juice is really in that "x" liters?  well, 25% of it is OJ, the rest is water, how much is 25% of x? well, (25/100) * x,  or 0.25x.

likewise, we'll use "y" of the 10% OJ, and it will end up with (10/100) *y or 0.10y of juice in it.

whatever "x" and "y" are, they must add up to 15 Liters, and the juice concentration on that mixture, must also be the sum of their sum concentration.

\bf \begin{array}{lccclll}&#10;&\stackrel{liters}{amount}&\stackrel{juice~\%}{quantity}&\stackrel{juice}{quantity}\\&#10;&------&------&------\\&#10;\textit{25\% juice}&x&0.25&0.25x\\&#10;\textit{10\% juice}&y&0.10&0.10y\\&#10;------&------&------&------\\&#10;mixture&15&0.17&2.55&#10;\end{array}&#10;\\\\\\&#10;\begin{cases}&#10;x+y=15\implies \boxed{y}=15-x\\&#10;0.25x+0.10y=2.55\\&#10;----------\\&#10;0.25x+0.10\left(\boxed{15-x}  \right)=2.55&#10;\end{cases}&#10;\\\\\\&#10;0.25x-0.10x+1.5=2.55\implies 0.15x=1.05\implies x=\cfrac{1.05}{0.15}&#10;\\\\\\&#10;x=7

how much will be it of the 10% juice?  well, y = 15 - x.
6 0
3 years ago
Help pleaseeeeeee quickly
shusha [124]

The first sentence in the chart belongs to the subjunctive mood, while the other sentences can be classified as part of the conditional mood.

<h3>What is a verb mood?</h3>

In language, the verb mood indicates the attitude of the speaker, and therefore, it provides clues about the way language is used. For example, the imperative mode indicates an order is being given.

<h3>What is the difference between the conditional and the subjunctive mood?</h3>
  • Subjunctive: It is used for expressing wishes; due to this, it is common to find the use of words such as "wish".
  • Conditional: It expresses a condition or a situation that will/can happen if another situation occurs. This can be identified due to the use of "if".

Based on this, the first sentences belongs to the subjunctive mood, while the other sentences are part of the conditional.

Learn more about the subjunctive in: brainly.com/question/22728240

#SPJ1

6 0
2 years ago
PLEASEEEEE HELPPPPPPP
kogti [31]

Answer:

3.88 i believe

Step-by-step explanation:

7 0
3 years ago
Which shape is both rectangle and a square?
mina [271]

Step-by-step explanation:

the rhombus is both rectangle and square

8 0
3 years ago
Read 2 more answers
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