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2 years ago

1/2x+3=-1 HELP ASAP!!

Mathematics

2 answers:

leva [86]2 years ago

8 0

Step-by-step explanation:

$\frac{1}{2} x + 3 = - 1 \\ \frac{x}{2} + 3 = - 1 \\ \frac{x}{2} + 3 - 3 = - 1 - 3 \\ \frac{x}{2} = - 4 \\ \frac{x}{2} \times 2 = - 4 \times 2 \\ x = - 8$

fenix001 [56]2 years ago

4 0

Step-by-step explanation:

$\frac{1}{2} x + 3 = - 1 \\ \frac{x}{3} + 3 = - 1 \\ \frac{x}{3} = - 1 - 3 \\ \frac{x}{3} = - 4 \\ x = - 4 \times 3 \\ x = - 12$

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DedPeter [7]

9514 1404 393

Answer:

3. vertical stretch by a factor of 2; shift right 1 and down 1

4. shift left 4 and up 4 (no stretch or shrink)

Step-by-step explanation:

The vertex form equation is ...

y = a(x -h)^2 +k

It represents a vertical stretch of the parent function by a factor of 'a', a right shift of 'h', and an upward shift of 'k'.

Compare the the given equations to the above form to see the transformations.

3. (a, h, k) = (2, 1, -1) ⇒ vertical stretch by a factor of 2; shift right 1, down 1

4. (a, h, k) = (1, -4, 4) ⇒ no vertical stretch; shift left 4, up 4

6 0

2 years ago

A computer manufacturing company has sent a mail survey to 2,800 of its randomly selected customers that have purchased a new la

vodka [1.7K]

Answer:

The 96% confidence interval for the population proportion of customers satisfied with their new computer is (0.77, 0.83).

Step-by-step explanation:

We have to calculate a 96% confidence interval for the proportion.

We consider the sample size to be the customers that responded the survey (n=800), as we can not assume the answer for the ones that did not answer.

The sample proportion is p=0.8.

$p=X/n=640/800=0.8$

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.8*0.2}{800}}\\\\\\ \sigma_p=\sqrt{0.0002}=0.014$

The critical z-value for a 96% confidence interval is z=2.054.

The margin of error (MOE) can be calculated as:

$MOE=z\cdot \sigma_p=2.054 \cdot 0.014=0.03$

Then, the lower and upper bounds of the confidence interval are:

$LL=p-z \cdot \sigma_p = 0.8-0.03=0.77\\\\UL=p+z \cdot \sigma_p = 0.8+0.03=0.83$

The 96% confidence interval for the population proportion is (0.77, 0.83).

4 0

2 years ago

Here's the questions I need help with<br><br>

Reil [10]

The second choice than the fir2nd choice than the first choice for the second question

6 0

3 years ago

Read 2 more answers

Please find the answers below

spayn [35]

Answer:

option 3 is the correct.....

Step-by-step explanation:

multiplying all the algebraic expressions

volume of cuboid = 3x (x+3)(x+1)

= 3x³ + 12x² + 9x

3 0

2 years ago

What is the <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B24%7D%20" id="TexFormula1" title=" \sqrt{24} " alt=" \sqrt{24} "

asambeis [7]

4.89897948557 is the answer

4 0

3 years ago