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GuDViN [60]
2 years ago
13

(-7x-5x^4+5) + (7x^4 + 5 + 9 x)

Mathematics
1 answer:
aivan3 [116]2 years ago
5 0

Answer:

2x⁴ + 2x + 10

Step-by-step explanation:

Step 1: Write out expression

-7x - 5x⁴ + 5 + 7x⁴ + 5 + 9x

Step 2: Combine like terms (x⁴)

2x⁴ - 7x + 5 + 5 + 9x

Step 3: Combine like terms (x)

2x⁴ + 2x + 5 + 5

Step 4: Combine like terms (constants)

2x⁴ + 2x + 10

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The figure shows a net of a cube. Which expression can be used to find the total surface area of the cube?
sergij07 [2.7K]

Answer:

Option C: 6(7 * 7)

Step-by-step explanation:

There are six faces of the cube. Since each face is 7 by 7 units, there are 6(7 *7) units total.

6 0
1 year ago
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Define a function f on a set of real numbers as follows: f(x) = 3x − 1 x , for each real number x ≠ 0 Prove that f is one-to-one
dalvyx [7]

Answer with Step-by-step explanation:

We are given that

f(x)=\frac{3x-1}{x}

For each real number x\neq 0

To prove that f is one -to-one.

Proof:Let x_1 and x_2 be any nonzero real numbers such that

f(x_1)=f(x_2)

By using the definition of f to rewrite the left hand side of this equation

f(x_1)=\frac{3x_1-1}{x_1}

Then, by using the definition of f to rewrite the right hand side of this equation  of f(x_1)=f(x_2)

f(x_2)=\frac{3x_2-1}{x_2}

Equating the expression then we get

\frac{3x_1-1}{x_1}=\frac{3x_2-1}{x_2}

3x_1x_2-x_2=3x_2x_1-x_1

3x_1x_2-3x_1x_2+x_1=x_2

x_1=x_2

Therefore, f is one-to-one.

6 0
3 years ago
On monday 254 students went on a trip to the zoo all 5 buses were filled 9 students had to travel in cars how many students were
Nady [450]
254-9=245 then you do 245/5 which is equal to 49.
4 0
3 years ago
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how many legs do 10 people have? if two people dont have legs. one person has 3 legs and one person has one leg. and mary has a
Ganezh [65]
So here is the answer. Normally, 10 people have 20 legs since each person has 2 legs each. But given the scenario that two people don't have legs, this would mean 20 minus 4, is 16 legs. Then one person has 3 legs, 16 plus 3 and it is 19. And then, another person has one leg, 19 plus 1 is 20. Therefore, the total legs would still be 20. Hope this helps. The dog does not count.
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3 years ago
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find the length of each isosceles right triangle when the hypotenuse is of the given measure given 8cm
Wewaii [24]

It is given that the triangle is isosceles right triangle . And in an isosceles right triangle the legs are equal . Let each leg be of x units. Now we use pythagorean identity, which is

a^2 +b ^2=c^2

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2x^2 = 64

x^2 = 32

x = 4 \sqrt 2

So the length of each leg is 4 \sqrt 2 .

4 0
3 years ago
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