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Len [333]
3 years ago
5

Christopher claims that 4 is not a rational number because it is not written as a ratio of integers is he correct explain why or

why not
Mathematics
1 answer:
Arisa [49]3 years ago
8 0
First hello there 












Any number<span> that can be written as a fraction with integers is called a </span>rational number<span> . </span>For<span> example, 1 7 and − 3 </span>4<span> are </span>rational numbers<span>.
</span>

So saying 4 is a rational number because it can be expressed as the quotient of two integers :4<span>÷1</span>
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What is another way to write x2.x4?
puteri [66]

Answer:

If x2.x4 and x2= 2x, x4=4x, while . means multiplication. therefore it can be written as 2x × 4x

3 0
3 years ago
Which is equivalent to 2.3(-2x + 9.1) + 9(3.4x - 8)?
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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
PLZ HELP ME. I am learning slope.
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Answer:

-0.125x + 12.5

Step-by-step explanation:

4 0
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Read 2 more answers
X + 4 = 11
mojhsa [17]

Answer:

A. Subtraction

B. Subtraction

C. x+4=11

      -4  -4

D. x=7

Step-by-step explanation:

3 0
3 years ago
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