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2 years ago

X² + 3x -4=0 solve by factoring

Mathematics

1 answer:

yaroslaw [1]2 years ago

5 0

Answer:

X=1 and -4

hope this helps you!

(p.s please mark me as brainlyest)

Step-by-step explanation:

tell me if you want/need the explanation why and I'll gladly give it to you.

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Polygon ABCD was transformed in polygon A'B'C'D. Identify the sequence of transformations performed. Select all that applied

stich3 [128]

Answer:

B. Polygon ABCD was reflected over the x-axis and then reflected over the y-axis.

6 0

3 years ago

A sample of students that had stuffy or runny noses were blindly given a single Skittles candy to put in their mouth. They were

Korvikt [17]

Answer:

The confidence interval is $0.2857< p < 0.4601$

Step-by-step explanation:

From the question we are told that

The sample size is n = 118

The number that gave the correct answer is k = 44

Generally the sample proportion is mathematically represented as

$\^ p = \frac{44}{118}$

=> $\^ p =0.3729$

Generally given that the confidence level is 95% the level of significance is mathematically represented as

$\alpha = (100 -95) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{p(1 - p)}{n} }$

=> $E = 1.96 * \sqrt{\frac{0.3729(1 - 0.3729)}{118} }$

=> $E = 0.0872$

Generally 95% confidence interval is mathematically represented as

$\r p -E < p < \r p +E$

=> $0.3729 -0.0872< p < 0.3729 +0.0872$

=> $0.2857< p < 0.4601$

5 0

3 years ago

What is the expression and answer

swat32

Answer:

Step-by-step explanation:

L is 2* W so L=2W

perimeter= 2w+2l

plug in whats given to get

perimeter=2w+4w 4w is because L is *2 of W so that makes L=2w

36=6w

36/6=6

6w/6=w

w=6

6*2=12=L

now we have 6*12=72=Area

3 0

3 years ago

You roll a six sided die what is the probability of rolling a 4 or an odd number

12345 [234]

Answer:

we need an out of sorry -_-

5 0

3 years ago

Read 2 more answers

What is the difference 1/8-3/10. A. -7/40 B.-3/40 C. 7/40 D. 17/40

mrs_skeptik [129]

The answer is A. -7/40.

1. Make sure the (the denominators) are the same
2. Subtract the (the numerators). Put the answer over the same denominator.
 3. Simplify the fraction (if needed)

6 0

3 years ago