Ask question

Ask question

All categories

3 years ago

10

I need help this is so complicated for me

1 answer:

lbvjy [14]3 years ago

6 0

5(3) + 1/2(2)^2 - replace variables with parenthesis that contain the variable's amount.
15 + 1/2(4) - parenthesis/exponents, multiplication.
15 + 2 - addition left to right.
17. - final answer.

Remember PEMDAS, your answer will be 17.

Now that you know how to solve it, don't copy paste this post.
You'll get caught, I promise.
Now that you know PEMDAS, make an explanation.

Good luck.

You might be interested in

If a linear function has the points (0,1) and (5,8) on its graph, what is the rate of change of the function?

Harrizon [31]

A. 7/4
Rate of change is the same as slope, it is how the line has to go to get from the first to the second point. The slope function is y2-y1 / x2-x1. So we end up with 8-1/5-1 making 7/4

6 0

3 years ago

WHAT IS A 2ND DEGREE POLYNOMIAL FUNCTION WHOSE GRAPH HAS ONLY POSITIVE Y-VALUES

elena55 [62]

An example of quadratic equation with this behavior is:

$y = x^2 + x + 20$

Which is sketched at the end of this answer.

A quadratic equation has the format:

$y = ax^2 + bx + c$

It's roots are given by:

$\frac{-b \pm \sqrt{\Delta}}{2}$

The number of roots depends on the discriminant $\Delta = b^2 - 4ac$ , that is:

If $\Delta > 0$ , it has two different real roots.
If $\Delta = 0$ , it has one real root.
If $\Delta < 0$ , it has no real roots.

In this problem, it will have only positive y-values if: $\Delta < 0$ and $c > 0$

Thus, an example is:

$y = x^2 + x + 20$

Which is sketched below.

A similar problem is given at brainly.com/question/19776811

6 0

2 years ago

What kind of slope does the following line have?<br> +

Softa [21]

Answer:

horizontal and vertical

Step-by-step explanation:

if its the plus?

5 0

4 years ago

I need help with math can u help me

k0ka [10]

What do you need help in

5 0

3 years ago

What is the margin of error for a sample statistic for a population with a standard deviation of 7.75?

3241004551 [841]

Answer:

Margin of Error = 1.96 $\times$ 7.75 = 15.19

Step-by-step explanation:

i) Margin of Error of a population with a standard deviation of 7.75?

ii) Let us assume a two tailed test with a 95% confidence interval

iii) $Z_{\frac{\alpha }{2} } = Z_{\frac{\ 0.05 }{2} } = Z_{0.025} = 1.96$

iv) therefore Margin of Error = 1.96 $\times$ 7.75 = 15.19

6 0

3 years ago