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3 years ago

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Consider this system of equations:

1 answer:

alexandr1967 [171]3 years ago

5 0

<span>"For which value of k does the system have no real number solutions?"
The answer is 4, because 4+4</span>≠16.
<span>
"For which value of k does the system have one real number solution?"
</span>The answer is -0.25, because the linear line because tangent with the parent function.

<span>"For which value of k does the system have two real number solutions?"
</span>The answer is 2, because the linear function intercepts the parent function 2 times.

- i hope these are the answers you are looking for.

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A student has a class with four tests, each worth 100 points, and has earned these

Wewaii [24]

Answer:

average = 52, 100 on fourth test

Step-by-step explanation:

average = 75 + 74 + 71 = 156 / 3 = 52

average = 52

b grade = 75 + 74 + 71 + 100 = 320 / 4 = 80

to get a b grade she must get 100 on her fourth test

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3 years ago

Rudy correctly solved the equation 10=4r

dangina [55]

Answer:

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2 years ago

Middle school Math!!!

liraira [26]

<h2>Answers:</h2>

Question 1: The equations share the same slope, but different y-intercepts.

Question 2: Option B (y = 2x + 1)

<h2>Explanations:</h2><h3>For Question 1:</h3>

Both equations are written in slope intercept form.

$y = mx+b\\\\\text{m - slope}\\\text{b - y-intercept}$

The equations we have are:

$\left \{ {{y=2x} \atop {y=2x-7}} \right.$

Both equations share the same slope of 2. However, they have different y-intercepts.

y = 2x can be written as y = 2x + 0.

Usually if you only have the slope in your equation then the y-intercept is the origin, or (0, 0).

The second equation's y-intercept is -7. It takes 'b's place.

<h3>For Question 2: </h3>

We are given a graph and we need to find a equation.

According to the graph, the line passes at (0, 1). 1 is the y - intercept.

Since y = 2x + 1 is the only option with 1 as the y - intercept, it should be the correct answer.

I'll do the slope as well to verify our answer.

I will use the points (-1, -1) and (1, 3).

$m=\frac{3-(-1)}{1-(-1)}=\frac{4}{2} =\boxed{2}$

The correct answer should be $y = 2x+1$ .

Hope this helps you.

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3 years ago

Prove if a and b are integers, prove that if a is even and b is even then a+b is even

jeka57 [31]

Answer:

Let a and b integers and suppose that are even numbers. Then, exist integers k and m such that $a=2k$ and $b=2m$ .

Then,

$a+b=2k+2m=2(k+m)=2n$

Since, k and m are integers then n=k+m is an integer. Then, since a + b is of the form 2 by an integer n, then a + b is an even number.

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3 years ago

In a standard Normal distribution, what percentage of observations lie between z = 0.37 and z = 1.65?

vladimir1956 [14]

Answer:

c

Step-by-step explanation:

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3 years ago