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2 years ago

Does the point (4, 8) satisfy the equation y = 2x?

Mathematics

1 answer:

polet [3.4K]2 years ago

7 0

Answer:

Yes

Step-by-step explanation:

You can answer this question by putting in the x-value [the 4 in (4, 8)] in for the x variable to see if you get the y-value [the 8 in (4, 8)] as the solution.

y=2(4)

y=8

Since 8 was the answer then yes, (4, 8) satisfies the equation y = 2x.

You might be interested in

If x = 13 units and h = 11 units, then what is the area of the rhombus pictured above?

erik [133]

Answer:

M5|L12 Fractional Sides

Step-by-step explanation: answer is in the link. copy and paste it. Trust me!

6 0

3 years ago

I'm super confused on parts g and h because no formula is given, just the limit values. These are the values:

Mrrafil [7]

Answer:

See below.

Step-by-step explanation:

So we have the limit:

$\lim_{x\to 4} (f\circ g)(x)$

This is equivalent to:

$\lim_{x\to 4} f(g(x))$

To solve, we can use the following property:

$\lim_{x \to c} f(g(x))=f( \lim_{x \to c} g(x))$

Therefore, our limit is the same as:

$\lim_{x\to 4} f(g(x))\\=f(\lim_{x\to 4} g(x))$

We are already given that the limit as x approaches 4 of g(x) is -2. Therefore:

$=f(-2)$

You simply need to evaluate this to solve the limit. I don't have enough information to solve this, so maybe you have something more.

Similarly, for the second one:

We have:

$\lim_{x\to 4} (g\circ f)(x)\\=\lim_{x\to 4}g(f(x))$

Using the same property:

$=g(\lim_{x\to 4} f(x))$

And we are told that this is 16, so:

$=g(16)$

And we just need to evaluate this to find the limit.

I hope you find this helpful!

8 0

3 years ago

A mptprbpat travels downstream on a river for five hours. The speed of the current is 2km/h. The river flows into a still lake a

stiv31 [10]

Answer:

10 km/hr

Step-by-step explanation:

5 hrs = 40 more with 2 km/hr current

2 hrs= less 40 no current

40-2x5=30

30 without current for three hours

30/3=10 km/hr no current

***

CHECK

10x2=20

10x5=50+2x5=60

***

Hope this helps, and please mark me brainliest! thanks! >//-//<

5 0

3 years ago

Marcus has 731 books. He puts about the same number of books on each of 9 shelves in his bookcase about how many books are on ea

GuDViN [60]

Answer:

Approximately 81 books

Step-by-step explanation:

731 / 9

Divide 731 by 9 to get 81.22...

731 / 9 = 81.22...

7 0

3 years ago

Evaluate the expression. 42+5⋅32−42÷23 CLEAR CHECK 12.625 222 45 59

lidiya [134]

Answer:

$\frac{4604}{23}$ or 200.173913

Step-by-step explanation:

$42+(5)(32)-\frac{42}{23} \\\\=42+160-\\\frac{42}{23}\\\=202-\frac{42}{23} =\frac{4604}{23}$

5 0

4 years ago