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igor_vitrenko [27]
3 years ago
14

To solve the equation t² - t = 12 by factoring, you would use

Mathematics
2 answers:
podryga [215]3 years ago
7 0
T^2-t=12
t^2-t-12=0
(t-4)(t+3)=0

t=4, -3
Naily [24]3 years ago
6 0

Answer:

The given quadratic equation t^2-t=12 can be factorized as (t+3)(t-4) using middle term splitting method.

Step-by-step explanation:

Consider the given quadratic equation t^2-t=12

It can be written as t^2-t-12=0

We can factorize it using middle term splitting method,

t^2-t-12=0

-t can be written as (-4t+3t ) such that their product is -12 then,

\Rightarrow t^2-4t+3t-12=0

\Rightarrow t(t-4)+3(t-4)=0

\Rightarrow (t+3)(t-4)=0

Thus, the given quadratic equation t^2-t=12 can be factorized as (t+3)(t-4) using middle term splitting method.

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Can anyone give me a hand with an expression 4x+8 step by step please
chubhunter [2.5K]

Factor 4x+8

4x+8

=4(x+2)

Answer:

4(x+2)

5 0
3 years ago
Find an equation of the line that has the given slope and contains the given point. m=7/3 (1,6)
iris [78.8K]

The point-slope form:

y-y_1=m(x-x_1)

We have the point (1, 6) and the slope m = 7/3. Substitute:

y-6=\dfrac{7}{3}(x-1)      <em>use distributive property</em>

y-6=\dfrac{7}{3}x-\dfrac{7}{3}          <em>add 6 to both sides</em>

y=\dfrac{7}{3}x+\dfrac{11}{3}        <em>multiply both sides by 3</em>

3y=7x+11           <em>subtract 7x from both sides</em>

-7x+3y=11         <em>change the signs</em>

7x-3y=-11

Answer:

point-slope form: y-6=\dfrac{7}{3}(x-1)

slope-intercept form: y=\dfrac{7}{3}x+\dfrac{11}{3}

standard form: 7x-3y=-11

5 0
3 years ago
Factor completely. (3.2² - 12x)(x2 – 2x + 1) =​
pychu [463]

Answer:

3x • (x - 4) • (x - 1)2

Step-by-step explanation:

5 0
3 years ago
Write 1 2/3 as the sum of a whole number and two fractions that have the same denominator.
larisa [96]
1+1/3+1/3 because 1/3 and 1/3 have the same denominator.
7 0
3 years ago
Each year, more than 2 million people in the United States become infected with bacteria that are resistant to antibiotics. In p
Olegator [25]

Answer:

Reject <em>H</em>₀. There is a significant difference in drug resistance between the two states.

Step-by-step explanation:

In this case we need to determine whether the data suggest a statistically significant difference between the proportions of drug-resistant cases in the two states.

The significance level of the test is, <em>α</em> = 0.02.

(1)

The hypothesis can be defined as follows:  

<em>H</em>₀: There is no difference between the proportions of drug-resistant cases in the two states, i.e. p_{1} - p_{2}=  0.  

<em>Hₐ</em>: There is a statistically significant difference between the proportions of drug-resistant cases in the two states, i.e. p_{1} - p_{2}\neq  0.  

(2)

Compute the sample proportions and total proportion as follows:

\hat p_{1}=\frac{12}{189}=0.063\\\\\hat p_{2}=\frac{8}{429}=0.019\\\\\hat p=\frac{12+8}{189+429}=0.032\\

Compute the test statistic value as follows:

Z=\frac{\hat p_{1}-\hat p_{2}}{\sqrt{\hat p(1-\hat p)\times [\frac{1}{n_{1}}+\frac{1}{n_{2}}]}}

   =\frac{0.063-0.019}{\sqrt{0.032(1-0.032)\times [\frac{1}{189}+\frac{1}{429}]}}\\\\=2.86

The test statistic value is 2.86.

(3)

The decision rule is:

The null hypothesis will be rejected if the p-value of the test is less than the significance level.

Compute the p-value as follows:

p-value=2\cdot P(Z>2.86)=2\times 0.00212=0.00424

<em>p</em>-value = 0.00424 < <em>α</em> = 0.02.

The null hypothesis will be rejected at 0.02 significance level.

Reject <em>H</em>₀. There is a significant difference in drug resistance between the two states.

7 0
3 years ago
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