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2 years ago

If 2x+4 = (x²)²÷2 then what is x?

Mathematics

1 answer:

Leviafan [203]2 years ago

8 0

Answer:

Below.

Step-by-step explanation:

2x+4 = (x²)²÷2

2x + 4 = x^4/2

x^4 = 4x + 8

x^4 - 4x - 8 = 0

We can try trial an error to solve this

Looks like x = 2 fits it:

2^4 - 4(2) - 8

= 16 -8 -8 = 0

so x = 2 is one solution.

I can't find any other solution among other integers.

To find the other solutions you can draw a graph manually or by using software.

There will be either 1 or 3 more real solutions.

I used software to draw the graph and found one other solution:

x = -1.296

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Find The Area of triangle ABC

Sergeeva-Olga [200]

Answer:

b. area = 18 square units

Step-by-step explanation:

area of a triangle = 1/2 * base * height

area = 1/2 (6+3) + (6-2)

area = 1/2 * 9 * 4

area = 18 square units

therefore the answer is b.

3 0

3 years ago

a road rises 16 feet for every 50 feet of horizontal distance covered. in percent what is the grade of the road?

weeeeeb [17]

Answer:

32%

Step-by-step explanation:

The slope of the road is measured as

slope = $\frac{rise}{run}$ = $\frac{16}{50}$

To express as a percentage multiply the fraction y 100% , that is

slope = $\frac{16}{50}$ × 100% = 16 × 2 = 32%

4 0

2 years ago

Kyle got in the elevator on the 7th floor. He rode up 2 floors and then down 5 floors. Which expression represents the floor Kyl

Arte-miy333 [17]

Answer:

7+2-5=f

Step-by-step explanation:

If he starts on the 7 floor, then he is seven above ground, and that would clarify as a positive number. He then goes up 2 floors, which means we would add 2 to the original number. Going down five would mean we would subtract, because he is getting closer to zero, which is ground level. F represents the floor he is on now.

Hope this helps! (Brainliest please!)

3 0

3 years ago

Read 2 more answers

a ball is thrown into the air with an upward velocity of 24 ft/s. its height h in the wet after t seconds is given the function

Natalka [10]

Answer:

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Step-by-step explanation:

6 0

3 years ago

Check all of the points that are solutions to the system of inequalities,

inna [77]

Answer:

A(0, 2), C(-1, 2), E(-4, -1)

Step-by-step explanation:

It can be useful to graph the equations and plot the points. Only the points in the doubly-shaded area are solutions to the system of inequalities.

You can try the offered points and see which work.

y > 2x +1

A. 2 > 2·0 +1 . . . true

B. 3 > 2·1 +1 . . . . False

C. 2 > 2(-1) +1 . . . true

D. 1 > 2·1 +1 . . . . False

E. -1 > 2(-4) +1 . . . true

F. 0 > 2·0 +1 . . . . False

y < -2x +3

A. 2 < -2·0 +3 . . . true

C. 2 < -2(-1) +3 . . . true

E. -1 < -2(-4) +3 . . . true

Points A, C, E are in the solution set.

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3 years ago