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3 years ago

How to change a quadratic equation into intercept form?

1 answer:

5 0

While most of the ways to write the quadratic equation are redundant and useless, there are three forms that actually have unique uses. These three main forms that we graph parabolas from are called standard form, intercept form and vertex form.

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How to solve for X and Y

vova2212 [387]

60+30

=90 ..180-90=90 use paythagorus fomular tan=opposite over adjacent

5 0

3 years ago

Help me with the questions in the image

aliya0001 [1]

Answer:

Step-by-step explanation:

5+7=12

8(9+3)

8(12)

<h3>iii.n+8 divided by 4 for n=28</h3>

=28+8 divided by 4

=36 divided by 4

<h3>iv.6p+40 divided by 5 for p =5</h3>

=6×5+40 divided by 5

=30+40 divided by 5

=70 divided by 5

=38

=3×6+7

=18+7

=25

5 0

3 years ago

15+2.5(2x+4)<br> PLease help!

RoseWind [281]

Answer:

Step-by-step explanation:

5x+25

8 0

4 years ago

The difference between teenage female and male depression rates estimated from two samples is 0.07. The estimated standard error

KATRIN_1 [288]

Answer:

The 95% confidence interval is $0.0112 < \mu_m - \mu_f < 0.1288$

Step-by-step explanation:

From the question we are told that

The sample mean difference is $\= x_m - \= x_f = 0.07$

The standard error is SE = 0.03

Given that the confidence interval is 95% then the level of significance is mathematically evaluated as

$\alpha = 100 - 95$

$\alpha = 5\%$

$\alpha =0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table, the value is $Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{ \alpha }{2} } * SE$

substituting values

$E = 1.96 * 0.03$

$E = 0.0588$

The 95% confidence interval is mathematically represented as

$(\= x_m - \= x_f ) - E < \mu_m - \mu_f$

substituting values

$0.07 - 0.0588 < \mu_m - \mu_f$

$0.0112 < \mu_m - \mu_f < 0.1288$

3 0

3 years ago

The value of 7mn to the 2power, for m = 3 and n = -2

siniylev [52]

You mean (7mn)^2, if so...

(7*3*-2)^2

-42^2=1764

5 0

3 years ago