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Allushta [10]
3 years ago
9

Please help , will give brainliest!

Mathematics
1 answer:
MissTica3 years ago
3 0

Answer:

2.3283064

Step-by-step explanation:

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What is the solution of the inequality-0.4x - 1.2 > 0.8
strojnjashka [21]

Answer:

x<-5

Step-by-step explanation:

-0.4x>0.8+1.2

-0.4x>2

x<-5

3 0
2 years ago
Explain why a rotation of 90 degrees around any point zero never maps a line to a line parallel to itself
Elis [28]

Answer:

Since zero is on the origin (0,0) a 90 degree rotation will intercept the origin no matter what so, it can't be parallel.

Step-by-step explanation:

8 0
3 years ago
The point that the two rays intersect is called the
crimeas [40]
A bisector<span> is something that cuts an object into two equal parts by using rays.

Hope this helps!</span>
7 0
3 years ago
The line x = k intersects the graph of the parabola x = -2y^2 - 3y + 5 at exactly one point. What is k? Thank you! :)
bearhunter [10]

Answer:

49/8 is the value of k

Step-by-step explanation:

We have the system

x = -2y^2 - 3y + 5

x=k

We want to find k such that the system intersects once.

If we substitute the second into the first giving us k=-2y^2-3y+5 we should see we have a quadratic equation in terms of variable y.

This equation has one solution when it's discriminant is 0.

Let's first rewrite the equation in standard form.

Subtracting k on both sides gives

0=-2y^2-3y+5-k

The discriminant can be found by evaluating

b^2-4ac.

Upon comparing 0=-2y^2-3y+5-k to 0=ax^2+bx+c, we see that

a=-2, b=-3, and c=5-k.

So we want to solve the following equation for k:

(-3)^2-4(-2)(5-k)=0

9+8(5-k)=0

Distribute:

9+40-8k=0

49-8k=0

Add 8k on both sides:

49=8k

Divide both sides by 8"

49/8=k

6 0
3 years ago
What is the slope of the line that has an x-intercept at x=12 and a y-intercept at y=−20?
steposvetlana [31]

Answer:

The slope is 5/3

Step-by-step explanation:

(12,0)

(0,-20)

Changes in y is -20-0=-20

Changes in x is 0-12=-12

Rise(y) over run(x) = -20/-12

-5/-3

5/3

4 0
3 years ago
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