1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
densk [106]
3 years ago
7

Solve using quadratic equations

Mathematics
1 answer:
olasank [31]3 years ago
7 0
4x² - 9x² + 5 = 0
4x² - 4x - 5x + 5 = 0
4x(x - 1) - 5(x - 1) = 0
(4x - 5)(x - 1) = 0

Set each binomial equal to zero. 

4x - 5 = 0
4x = 0 + 5
4x = 5
x = 5/4

x - 1 = 0
x = 0 + 1
x = 1

Your solutions are x = 1, 5/4
You might be interested in
I need help pls pls pls
morpeh [17]

Answer:

there is no picture??????????

8 0
2 years ago
How is the Remainder Theorem related to the process of synthetic division?
vladimir2022 [97]

Answer:

The Remainder Theorem states that f(c) = the remainder. So if the remainder comes out to be 0 when you apply synthetic division, then x - c is a factor of f(x). by x - 2. Use the result to find all zeros of f

4 0
2 years ago
Hypothesis Testing for Means with Small Samples
Scorpion4ik [409]

Answer:

Step-by-step explanation:

Hello!

The variable of interest is

X: volume of root beer in a Windsor Bottling Company can.

A sample of n=24 cans was taken and their contents measured, resulting:

X[bar]= 11.4 oz

S= 0.62 oz

Assuming that the variable has a normal distribution X~N(μ;σ²), the parameter of interest is the average contents of the root beer cans of the Windsor Bottling Company (μ)

The claim is that the population mean content of the cans is different from 12 oz, symbolically: μ ≠ 12

The statistical hypothesis (Null and alternative) have to be complementary, exhaustive and mutually exclusive. The null hypothesis is the "no change" hypothesis and always carries the "=" sign.

If the claim is μ ≠ 12, its complement is μ = 12, the expression carrying the "=" sign will be the null hypothesis and its complement will be the alternative hypothesis:

H₀: μ = 12

H₁: μ ≠ 12

α: 0.05

To test the population mean of this normal population, you have to apply a one sample t-test, with statistic:

t= \frac{X[bar]-Mu}{\frac{S}{\sqrt{n} } } ~t_{n-1}

t_{H_0}= \frac{11.4-12}{\frac{0.62}{\sqrt{24} } } = -4.74

This test is two-tailed, using the critical value approach, you have to determine two rejection regions. Meaning, you'll reject the null hypothesis to small values of the statistic or to high values of the statistic.

t_{n-1;\alpha /2}= t_{23;0.025}= -2.069

t_{n-1;1-\alpha /2}= t_{23;0.975}= 2.069

The decision rule is:

If t_{H_0} ≤ -2.069 or if t_{H_0} ≥ 2.069, then you reject the null hypothesis.

If -2.069 < t_{H_0} < 2.069, then you do not reject the null hypothesis.

The value is less than the left critical value, the decision is to reject the null hypothesis.

Then you can say that with a 5% significance level, there is significant evidence to reject the null hypothesis, then the average amount of root beer of the Windsor Bottling Company is different from 12 oz, this means that the claim about the amount of root beer in the cans is correct.

I hope it helps!

6 0
3 years ago
Derek is solving the following equation. Find where he made a mistake.
Arisa [49]

Answer:

he was supposed to add three on both sides

4 0
2 years ago
Read 2 more answers
Evaluate the expression 4y/Yfor x=8 and y=0
jeyben [28]
To evaluate 4y/x for x=8 and y=0 we shall have:
4y/x=(4×0)/8
=0/8
=0
Answer; 0
8 0
3 years ago
Other questions:
  • Baker knows he need 6 cups of sugar and 15 cups of flour, what is the ratio of sugar to flour
    8·1 answer
  • Which is the solution set of the compound inequality 3.5x - 10 &gt; -3 and 8x - 9 &lt; 39
    11·1 answer
  • Evaluate the function at the fiven values of the variables:
    8·1 answer
  • Average age of scouts at scout jamboree?
    8·1 answer
  • What is the next number in pattern from 2,9,28,65
    10·1 answer
  • 20/10= determine the whole number
    8·2 answers
  • At a cafeteria, Mary orders two pieces of toast and a bagel, which comes out to $\$3.15$. Merry orders a bagel and a muffin, whi
    12·1 answer
  • Find the missing right triangle side lengths in the models of the Pythagorean Theorem below
    8·2 answers
  • When you type your brainly password it sensors it out ********** I just tried, I never knew
    12·1 answer
  • A committee must be formed with 4 teachers and 7 students. If there are 9 teachers to choose from, and 8 students, how many diff
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!